Development by age

What tends to happen at this age

What tends to happen at each stage, and what parents can do. Pick your child's age, then open each area.

Every child develops differently. These are common at this age, not a test.

Age band 0–3 years

The period when the brain grows fastest. Children learn through adults' responses and through play.

Body

Common at this age

First year: holds head up, rolls, sits alone. Around 1, most pull up to stand, walk holding furniture, and pick up small bits with thumb and finger.
1–2 years: by about 18 months most walk alone and climb on and off the sofa; around 2 they run and kick a ball.
2–3 years: jumps with both feet, twists lids open, strings big beads. Every child moves at their own pace.

Why it matters

Body and brain grow very fast now. Floor play, active play and enough sleep help both movement and thinking, and build health habits that last.

Try at home

First year: tummy time while awake, with a toy in front. Stay right beside them. If your baby gets sleepy, lay them on their back in their own sleep space.

Start with 3–5 minutes at a time, building to 30+ minutes a day in total

1–3 years: walk, climb, kick, throw, dance in a safe place you can see. Avoid more than 1 hour at a time in a stroller or high chair.

At least 3 hours a day in total, spread through the day

Babies sleep on their back on a firm, flat surface with no pillows, blankets or toys, in your room but not your bed, for at least the first 6 months.

Including naps: 4–12 months 12–16 h; 1–3 years 11–14 h a day

Talk to a doctor or teacher if

By about 6 months, not rolling from tummy to back; by about 9 months, not sitting without support; or by about 1, not pulling up to stand.
By about 18 months, not walking without holding on; or by about 30 months, not jumping with both feet.
Loses a skill they had, like walking. Or something just worries you: ask now, don’t wait.

Sources: CDC – Learn the Signs. Act Early (2022) · WHO guidelines on physical activity, sedentary behaviour and sleep for children under 5 (2019) · AAP – HealthyChildren.org

Language and thinking

Common at this age

First year: coos back at you; around 9 months babbles “mamama”; around 1 waves bye-bye and looks for a toy they saw you hide.
1–2 years: by about 18 months tries 3 or more words besides “mama” and “dada”; around 2 puts two words together, like “more milk”.
2–3 years: around 30 months says about 50 words; around 3 asks “what?” and “why?” and keeps a chat going for 2 or more turns.

Why it matters

Young brains grow through back-and-forth with adults. Each time your child babbles or points and you answer, language and thinking links get stronger. Under 18 months, children learn best from real people, not screens.

Try at home

When your child babbles, points or stares at something, name it (“That’s a dog. Woof woof!”), then pause and wait for a reply: a sound, a gesture or a word.

Every day, woven into baths, meals and dressing

Read together from birth. Point and ask “Where’s the bear?”, let your child turn the pages, and later ask “Who’s doing what?”

Every day, e.g. 1–2 books at bedtime

Choose real talk over screens. If you do watch, watch together and talk about it. Put your own phone away at meals and bedtime.

Under 2: no screens except video calls; 2–3: no more than 1 hour a day

Talk to a doctor or teacher if

By about 1, not waving bye-bye; or by about 18 months, fewer than 3 words besides “mama” and “dada”.
By about 2, not putting two words together; or by about 3, others still can’t understand most of what they say.
Stops using words or gestures (waving, pointing) they used to have.

Sources: CDC – Learn the Signs. Act Early (2022) · Harvard Center on the Developing Child · AAP – HealthyChildren.org

Self-control

Common at this age

First year: settles when held or spoken to. Around 1, starts to understand “no” and may pause or stop briefly.
1–2 years: can only wait a short time and may repeat what you just stopped. Remembering rules and stopping themselves are brand new, so repeated reminders are normal.
2–3 years: around 30 months follows simple routines when told, like tidying toys at “clean-up time”, and follows two-step instructions.

Why it matters

Waiting, remembering rules and switching plans aren’t skills we’re born with. They’re built bit by bit through play and routines with adults, starting in the first year.

Try at home

6–18 months: play peekaboo, or hide a toy under a cloth for your child to find. Once that’s easy, move it while they watch and let them search again.

A few minutes, several times a day; stop when they lose interest

18 months–3 years: dance and freeze when the music stops, or play follow-the-leader (walk, jump, tiptoe), then let your child lead.

5–10 minutes a day

Give a heads-up before switching (“Two more slides, then home”), and offer just two choices: “Red shoes or blue ones?”

Before each switch, like leaving play or bedtime

Talk to a doctor or teacher if

By about 1, no sign of understanding “no”; or by about 30 months, not following simple routines when told.
By about 3, not avoiding hot things like a stove after you warn them.
Loses the ability to follow requests or routines they managed before. Or you’re worn out and struggling: reach out.

Sources: Harvard Center on the Developing Child · CDC – Learn the Signs. Act Early (2022) · AAP – HealthyChildren.org

Emotions

Common at this age

First year: around 2 months smiles when you talk to them; around 9 months shows many expressions, may be wary of strangers, and cries when you leave.
1–2 years: tantrums are common from 1 to 3, more so when hungry or tired. Around 2, starts to notice when someone is hurt or upset.
2–3 years: may get frustrated when the words won’t come fast enough. Around 3, most settle within about 10 minutes after childcare drop-off.

Why it matters

Little ones can’t calm themselves yet; they borrow calm from you. Holding, soothing and naming feelings help them slowly learn to handle feelings on their own.

Try at home

First year: pick up and soothe when your baby cries; holding won’t spoil them. If you’re overwhelmed, lay your baby in a safe sleep space and step away briefly. Never shake a baby.

If you step away, check on your baby every 5–10 minutes

1–3 years: name the feeling and keep the limit: “You’re angry because you want to keep playing. It’s OK to be angry, but no hitting.” Stay close until they settle.

Every time feelings flare; few words, calm voice

2–3 years: once calm, retell what happened in a few words and try other ways to show big feelings: hug a teddy, stomp, or blow out pretend candles.

After they’ve calmed, or 2–3 minutes at bedtime

Talk to a doctor or teacher if

By about 2 months, not smiling when you talk to them; or by about 9 months, few facial expressions and no reaction when you leave.
By about 3, still not settling within about 10 minutes after you leave.
Used to smile, laugh and play with you but has gone quiet or lost interest in people. Or you’re worried: reach out.

Sources: CDC – Learn the Signs. Act Early (2022) · AAP – HealthyChildren.org · Harvard Center on the Developing Child

Social

Common at this age

First year: around 6 months knows familiar people; around 9 months looks when you call their name; around 1 loves pat-a-cake and peekaboo with you.
1–2 years: points to show you things, wanders off but checks you’re still near, and copies other children at play.
2–3 years: around 30 months plays next to other children and sometimes with them. Sharing and waiting turns still take an adult’s help.

Why it matters

A warm bond with close adults is the base for getting along with others. Everyday back-and-forth builds communication and social skills, even before your child can talk.

Try at home

First year: make simple moves (wave, stick out your tongue, blow a kiss), wait for your baby to copy, then copy theirs back.

Daily, when your baby is awake and content

1–3 years: practise turns at home: roll a ball back and forth, or stack blocks one each (“Your turn!”), then knock it down and build again.

10–15 minutes a day

1–3 years: meet children of a similar age at a playground or library. Stay close and help with taking turns and using words instead of grabbing.

Once or twice a week

Talk to a doctor or teacher if

By about 9 months, not looking when you call their name; or by about 18 months, not pointing to show you something interesting.
By about 3, not noticing other children or joining them to play.
Used to respond to their name, point, or play back and forth with you, but has stopped.

Sources: CDC – Learn the Signs. Act Early (2022) · CDC – Positive Parenting Tips · Harvard Center on the Developing Child

Doing it myself

Common at this age

First year: around 9 months rakes food closer with their fingers; around 1 drinks from an open cup while you hold it.
1–2 years: around 18 months feeds themselves with fingers, tries a spoon and pushes an arm through a sleeve; around 2 eats with a spoon.
2–3 years: takes off loose pants; around 3 puts on some loose clothes and uses a fork. Most aren’t ready to toilet train until 2 to 3.

Why it matters

Each month your child wants to do more alone. Trying safe tasks, even slow and messy ones, trains hands and memory for steps, and builds that “I can do it” feeling.

Try at home

9 months–2 years: sit together at the table. Cut food small to prevent choking, let your child pick it up, try a spoon and an open cup, and stay for the whole meal.

At shared meals; allow a little extra time

18 months–3 years: turn chores into play: toys into a box, socks into the basket like shooting hoops. Then thank them for helping.

1–2 small jobs a day, about 5 minutes each

2–3 years: let your child try taking off and putting on loose clothes. Offer two outfits, help only with the tricky bits, and praise what they manage.

Every day at dressing time; allow 5–10 extra minutes

Talk to a doctor or teacher if

By about 1, not picking up small things between thumb and pointer finger; or by about 18 months, not feeding themselves with fingers.
By about 2, not eating with a spoon; or by about 3, can’t put on any loose clothing alone.
Loses self-care skills they had, like feeding themselves or helping with dressing. Or you’re unsure: ask now, don’t wait.

Sources: CDC – Learn the Signs. Act Early (2022) · CDC – Positive Parenting Tips · Harvard Center on the Developing Child

Moments parents of this age often meet

Baby cries and nothing helps
Potty training troubles
You say no, and they do it again
Clings and cries when others hold them
Waking often at night
Meltdown at the shops
Won't share toys
Hitting or biting when upset
Crying at drop-off
Won't eat unless a video is on

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 4–6 years

The period of wanting to do it myself, asking why a lot, and getting ready for school.

Body

Common at this age

Around 4: catches a big ball most of the time, holds a crayon with the fingers instead of a fist, and pours water with an adult watching.
Around 5: hops on one foot and does up some buttons.
Around 6: most dress themselves, and some start tying their shoes. Every child moves at their own pace.

Why it matters

Active play every day is good for health and development. Nimble fingers help with pencils, buttons and looking after themselves at school.

Try at home

Play hard enough to puff every day: tag, climbing frames, or riding a bike with a helmet on.

An average of 1 hour or more a day of huff-and-puff play (age 4: 3 hours of moving in total)

Build hand skills: play dough, cutting with child scissors, threading beads, or doing up their own buttons.

10–15 minutes a day

Take them swimming or to lessons, with an adult watching closely the whole time, even in a paddling pool or tub.

Every time they are near water

Talk to a doctor or teacher if

Around 4, still can't catch a big ball, or grips a crayon in a fist
Around 5, can't hop on one foot
Eyes look crossed, drift outward, or don't focus together
Loses skills they used to have, like running, climbing or picking things up

Sources: CDC – Learn the Signs. Act Early (2022) · WHO physical activity guidelines (under 5, 2019; ages 5–17, 2020) · AAP – HealthyChildren.org

Language and thinking

Common at this age

Around 4: says sentences of four or more words, tells you something from their day, and can answer “What is a coat for?”
Around 5: tells a story with two or more events, keeps a chat going past three turns, and counts to 10.
Around 6: describes events, thoughts and feelings in more detail, and often asks “why?”

Why it matters

Each time your child talks and you listen and answer back, their language and thinking get a workout. The words and storytelling they build now are the base for reading and writing.

Try at home

Read together, point at the pictures and ask “What do you think happens next?”, then let your child tell the story from the pictures.

Every day, 10–20 minutes (age 5 and up: 10–30)

Chat back and forth: “What was the most fun today?” Wait for the whole answer, then ask “Why?” and “What happened next?”

Every day, e.g. at meals or bath time

Play word games: find rhymes (cat–hat–bat), “I spy something red…”, or count things around you.

5–10 minutes a day, while waiting or travelling

Talk to a doctor or teacher if

Around 4, not yet using sentences of four words
Around 5, can't tell a short story
Often doesn't respond when called, or others find their speech hard to understand (ask for a hearing check)
Talks less or uses fewer words than they used to

Sources: CDC – Learn the Signs. Act Early (2022) · AAP – HealthyChildren.org · Harvard Center on the Developing Child

Self-control

Common at this age

Around 4: starts to adjust to the place, like being quieter in a library, and avoids some dangers on their own.
Around 5: pays attention to a story or craft for about 5–10 minutes (screens don't count).
Most still lean on adults for reminders and rules. Every child grows at their own pace.

Why it matters

Stopping to think, keeping rules in mind and switching plans grow very fast at this age. Play is a great way to practise, and these skills help with both learning and friendships.

Try at home

Play stop-and-go games: freeze dance, red light green light, or Simon Says.

10–15 minutes a day

Plan pretend play first: your child says or draws “who I'll be and what I'll do”, then plays it out, like playing doctor.

3–4 times a week, 15–20 minutes each

Play memory card games or simple board games. Once they know the game, let your child keep the rules.

2–3 times a week, about 15 minutes

Talk to a doctor or teacher if

Around 4, shows no sense of danger, like often jumping from high places or running into the road
Around 5, almost never stays with a non-screen activity for 5 minutes
Around 6, the teacher says following class directions is a steady struggle
Used to wait a turn or follow rules, but can't anymore

Sources: Harvard Center on the Developing Child · CDC – Learn the Signs. Act Early (2022) · AAP – HealthyChildren.org

Emotions

Common at this age

Around 4: comforts someone who is sad, like hugging a crying friend, and puts more feelings into words.
Big anger, tears or fears still happen now and then. Most children have fewer meltdowns once they start school.
Around 6: talks about their feelings more easily and cares more about how others feel.

Why it matters

Children learn to handle feelings from adults who name them and calm down with them. This matters for friendships and for learning.

Try at home

Name the feeling, like “You're angry because your block tower fell down?”, and keep the limit: “It's okay to be angry, but not to hit.”

Every time a big feeling comes

Set up a calm corner with a cushion or soft toy. Practise slow “blow out the candle” breaths when things are fine, then use them when upset, with you close by.

Practise 1–2 minutes a day

While reading, chat about how a character feels, why, and what your child would do.

3–4 times a week at story time

Talk to a doctor or teacher if

Sad or irritable most of the day, or no longer enjoys favourite things, for more than 2 weeks
Meltdowns often last over 25 minutes, can't calm down at all, or hurt themselves, others or things; or after age 5, meltdowns still frequent or getting worse
Fears or worries so strong they get in the way of daily life
Used to name feelings or settle down, but can't anymore

Sources: CDC – Learn the Signs. Act Early (2022) · AAP – HealthyChildren.org · Cleveland Clinic – Temper tantrums · AACAP – Temper Tantrums (2025)

Social

Common at this age

Around 4: loves pretending to be a teacher or superhero, asks to play with other children, and likes being a “helper”.
Around 5: takes turns and follows rules with friends, and helps with simple chores like clearing plates.
Around 6: friends and teamwork matter more, and they want to be accepted.

Why it matters

Playing with others is where children practise taking turns, cooperating, negotiating and seeing another view. That is a big part of being ready for school, not just reading and writing.

Try at home

Set up play with one or two friends. Let them try to sort out problems first, then step in lightly: “How could you take turns?”

Once or twice a week

When your child hurts someone's feelings, help them say sorry and think “How can I help them feel better?” Praise kind moments too.

Each time it happens

Teach body safety: their body belongs to them, they can say “no”, and they can tell a trusted adult anything.

A short talk once a month, and whenever they ask

Talk to a doctor or teacher if

Around 4, no pretend play, or no interest in playing with other children
Around 5, can't take turns or follow rules when playing with others
Around 6, keeps away from other children, or the teacher says getting along is very hard
Used to play with others, but now withdraws or can't

Sources: CDC – Learn the Signs. Act Early (2022) · CDC – Positive Parenting Tips · AAP – HealthyChildren.org

School readiness

Common at this age

Around 5: writes some letters of their name and can name some letters.
Most can use the toilet, wash their hands and manage their clothes more on their own.
Readiness also means listening to directions, waiting a turn and asking for help. Children get ready at different times.

Why it matters

Before Grade 1, looking after themselves, enough sleep and being able to ask for help make the move to school easier. Home is your child's first classroom.

Try at home

Practise the morning routine with a picture chart: toilet, wash hands, dress, brush teeth. Let your child do it, even if it takes a while.

Every morning; allow 10–15 extra minutes

Same bed and wake times, screens off 1 hour before bed and out of the bedroom. Ages 4–5: at most 1 hour of screens a day, good shows, watched together.

10–13 hours of sleep a day (age 6: 9–12)

Practise safety: their full name and yours, holding hands to cross at a crossing, and riding in a car seat or booster in the back.

Every trip

Talk to a doctor or teacher if

Around 5, can't count to 10 or doesn't know any letters yet
Around 6, clearly behind classmates in reading and writing, or can't play rhyming games
Refuses school for more than a week, or often has tummy aches only on school days
Used to use the toilet alone or write their name, but can't anymore

Sources: AAP – HealthyChildren.org · CDC – Learn the Signs. Act Early (2022) · AASM sleep recommendations (endorsed by AAP)

Moments parents of this age often meet

Potty training troubles
Meltdown at the shops
Won't share toys
Hitting or biting when upset
Crying at drop-off
Won't eat unless a video is on
Rushed mornings, won't get dressed
Big feelings after school
Losing a game
A new baby at home

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 7–9 years

The period when school and friends matter more, and children start comparing themselves with others.

Body

Common at this age

Most can dress themselves, tie their shoes and catch a ball with their hands, and run, climb and ride a bike more smoothly.
Many start to love team sports and games with rules, like football or skipping rope.
More skill and daring mean more falls and road risks. In the car, a booster seat in the back is still needed until the adult belt fits.

Why it matters

Moving every day builds heart, lungs, muscles and bones, and helps learning and mood. Sports with rules also train memory and quick decisions.

Try at home

Play hard enough to breathe faster: tag, football, cycling (helmet on every ride). Short bursts add up.

60+ minutes a day on average

Games that work muscles and bones: skipping rope, climbing frames, tug-of-war.

At least 3 days a week

Set a bedtime that allows enough sleep, switch screens off before bed, and keep phones and tablets out of the bedroom.

9–12 hours of sleep; screens off 1 hour before bed

Talk to a doctor or teacher if

Snores often, struggles to breathe in sleep, or is very sleepy during the day.
Puberty signs start early: before 8 in girls (such as breast budding) or before 9 in boys.
Loses skills they already had, such as running, jumping, writing or dressing themselves.

Sources: WHO guidelines on physical activity and sedentary behaviour (2020) · AASM sleep duration recommendations, endorsed by AAP (2016) · AAP – HealthyChildren.org

Thinking and learning

Common at this age

Thinking skills grow fast. Your child understands reasons better and can describe experiences and ideas in more detail.
Starts thinking about the future and other people’s views, like what to be when grown up or how a friend feels.
Schoolwork gets harder, and some feel behind for the first time. Every child has different strengths and a different pace.

Why it matters

Many children now start judging whether they are “good at things” from schoolwork. Praising effort and ways of thinking, rather than calling them “smart”, matters a lot at this stage.

Try at home

Take turns reading a page each, then chat: “What would you do next?”

Every day, about 15–20 minutes

Homework in the same spot at the same time, with TV and screens off. Ask “Where are you stuck?” before giving answers.

Every homework day

Praise what your child does: “You tried lots of ways until you found it!” instead of “So smart!”

Whenever you notice effort

Talk to a doctor or teacher if

Clearly behind in reading, writing or maths even with help: talk to the teacher, as the school can assess.
Grades drop a lot, often avoids school, or keeps complaining of headaches or tummy aches.
Reading, writing, maths or speech they already had clearly slips backwards.

Sources: CDC – Positive Parenting Tips: Middle Childhood · AAP – HealthyChildren.org · Raising Children Network

Self-control

Common at this age

Focuses for longer, can hold tricky game rules in mind, and starts planning a few moves ahead.
Still often gets distracted or forgets things and instructions. Big multi-step jobs usually still need an adult to break them down.
Gets better at waiting, finishing a task before play, and thinking about what happens next, with practice.

Why it matters

Brain skills like remembering, holding back and changing plans grow through games that get steadily harder. They support both learning and getting along with others.

Try at home

Play card or board games that need memory and planning, like card-matching games, chess or sudoku, and raise the challenge over time.

2–3 times a week, 15–20 minutes each

Make a short step-by-step checklist for mornings or homework that your child ticks off. Split big jobs into small pieces.

Use daily, review once a week

Music, singing, dancing or skipping-rope rhymes: practice in keeping a pattern in mind while moving.

2–3 times a week, 15–30 minutes each

Talk to a doctor or teacher if

Distraction or trouble stopping that keeps getting in the way of school, home life and friends.
The teacher tells you focus or play with other children has changed.
Focus, organising or routines they already had are clearly lost.

Sources: Harvard Center on the Developing Child · CDC – Positive Parenting Tips: Middle Childhood · AAP – HealthyChildren.org

Emotions

Common at this age

Starts comparing with friends or siblings (“They draw better than me”) and cares what others think.
Some get embarrassed easily, are hard on themselves, or worry after hearing scary news.
Puts feelings into words better and shows care when others are upset.

Why it matters

Confidence now ties to schoolwork, sport, looks and friends, and may dip in primary school. Listening without judging often makes it easier for your child to speak up.

Try at home

Phones down, ask “Best part of today? Hardest part?” and listen fully before advising.

Every day, about 10–15 minutes

At a calm moment, make a “cool-down plan”: 5 slow breaths, a drink of water, a quiet corner. Be clear: “Angry is OK, hitting is not.”

Practise weekly, use when feelings run high

Share a time you got it wrong and tried again, and name your child’s real strengths when you hear “I’m no good.”

Once or twice a week

Talk to a doctor or teacher if

Sad, irritable, or no longer enjoys favourite things, nearly every day for more than 2 weeks.
Worries or fears that disrupt sleep, stop activities, or bring frequent headaches or tummy aches.
Talks about hurting themselves or wanting to die: contact a doctor or hospital right away.
Loses skills they already had, such as talking, playing with friends or self-care.

Sources: Raising Children Network · AAP – HealthyChildren.org · CDC – Positive Parenting Tips: Middle Childhood

Social

Common at this age

Friends matter much more. Your child wants to be liked and accepted, and cares about teamwork.
Friend groups form. Being bossed about or left out now and then happens, but it is different from being picked on again and again.
Around 9, many see others’ points of view more clearly and feel more peer pressure.

Why it matters

Friends give a sense of belonging and social practice. Children with good friends are bullied less often, and those who feel good about themselves resist peer pressure better.

Try at home

Ask about friends casually: “Who did you play with at break?” Sometimes ask: “Have you seen anyone get picked on?”

Several times a week, e.g. at dinner

Role-play “stop, walk, talk”: say “Enough” in a firm voice, walk away calmly, then tell a teacher.

A 5-minute practice once a week

Invite friends over, join a sports team or club, and get to know your child’s friends’ families.

Once a week or more

Talk to a doctor or teacher if

Signs of bullying, like lost or broken belongings, unexplained injuries or not wanting to go to school: talk to the teacher.
Hurts, shames or shuts other children out again and again: talk with your child and the teacher soon.
Used to play with friends but now pulls away from everyone, or suddenly loses friends.

Sources: AAP – HealthyChildren.org · CDC – Positive Parenting Tips: Middle Childhood · Raising Children Network

Responsibility

Common at this age

Can do simple chores like making the bed, setting the table or sorting laundry. From about 8, many can help make simple meals.
By about 8, most brush their teeth, wash and dress on their own, though some days they forget.
Wants more independence, yet clear rules and an adult keeping an eye out still matter a lot.

Why it matters

Regular chores build responsibility, planning and follow-through. Honest praise for effort is often the best motivator.

Try at home

Start with one regular job, like setting the table, at the same time every day and ticked on a chart. Add one new job at a time.

Every day, same time

Hold a short family meeting to look back on chores, and let your child set a small goal of their own, like finishing one book.

Once a week, about 15 minutes

Agree on safety rules together: cross at the zebra crossing, who to ask for help if something goes wrong, what time to be home.

Go over them before every outing to play

Talk to a doctor or teacher if

Around 8 and still can’t brush teeth, wash or dress at all, even after step-by-step practice.
The teacher keeps raising forgotten or unfinished work even with checklists and help: talk it through with the teacher.
Loses self-care skills they already had, like dressing, tying shoes or washing alone.

Sources: AAP – HealthyChildren.org · CDC – Positive Parenting Tips: Middle Childhood · Raising Children Network

Moments parents of this age often meet

Wants a phone and social media like their friends
Bad test result, then silence
Body changes and questions about sex
Rushed mornings, won't get dressed
Big feelings after school
Losing a game
A new baby at home
First day at a new school
Talking back
Won't go to bed

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 10–12 years

The pre-teen period: the body starts to change and they want more independence.

Body

Common at this age

Many start puberty: growing fast, new body hair, stronger body odour or pimples.
Timing can differ by years: girls often start around 8–13, boys around 9–14.
Many start caring more about their body, looks and clothes.

Why it matters

Bodies change fast and not in step with friends. Knowing ahead what is normal eases worry, and enough sleep plus daily movement help mood, focus and learning.

Try at home

Explain coming body changes before they happen, a little at a time, like on a car ride. Answer questions honestly, without laughing or scolding.

Try a short chat once a week, and whenever they ask

Get them moving until they're out of breath, like cycling (with a helmet), football or dancing, plus strength play like skipping or climbing.

60+ minutes a day on average; vigorous and strength play 3+ days a week

Set a bedtime that allows about 9–12 hours of sleep. Screens off an hour before bed, and phones charge outside the bedroom.

Every night (from 13: about 8–10 hours)

Talk to a doctor or teacher if

By about 13–14, no signs of puberty have started yet
Worries a lot about weight or body shape, or eating changes noticeably
Gets worse at things they could already do, like running, cycling, handwriting or self-care

Sources: AAP – HealthyChildren.org (puberty, sleep) · WHO guidelines on physical activity and sedentary behaviour (2020) · CDC Positive Parenting Tips (9–11 and 12–14 years)

Thinking

Common at this age

Longer attention span, handles harder schoolwork, and starts thinking about more complex, abstract ideas.
Sees other people's points of view better, with clearer opinions and a stronger sense of right and wrong.
Yet many still see things in black and white: right or wrong, great or terrible.

Why it matters

Schoolwork gets harder and your child is building their own values. Safe debates at home help them see many sides, and give them something to stand on when friends push risky ideas.

Try at home

Talk about the news or something from school. Ask “What do you think?” and listen to the end before sharing your view.

Try 10–15 minutes a day, e.g. at dinner

When they're upset with someone, ask “Could there be another reason they did that?” to practise seeing other sides.

Whenever it comes up

Encourage daily reading of what they enjoy, like novels, comics or articles, then ask what they got from it, or talk about homework together.

Every day; try about 20 minutes

Talk to a doctor or teacher if

Grades drop sharply, or school suddenly feels much harder than before
Gives up very fast on hard tasks, or often says they can't think or decide
Reading, writing, maths or memory gets worse than it used to be

Sources: CDC Positive Parenting Tips (9–11 and 12–14 years) · AAP – HealthyChildren.org (Stages of Adolescence) · Harvard Center on the Developing Child

Self-control

Common at this age

Plans and manages homework more on their own, but these skills are still growing.
With more school and after-school demands, many still forget, put things off or drift to their phone.
Some argue with rules or test limits, and react strongly when stopped.

Why it matters

Planning, focus and pausing before acting keep developing through the teens, while school expects more independence. An adult who coaches step by step helps a lot.

Try at home

Plan the week together: your child writes tasks and due dates on a calendar and splits big jobs into small pieces. Then look at what worked.

Once a week, about 15 minutes

During homework, keep the phone in another room and use a timer. When it rings, they ask themselves “Am I still focused?”

Try 25–30 minutes, then a 5-minute break

Agree on a clear goal, like “Homework done by 8 p.m.”, and let your child choose when and how.

Agree once, review once a month

Talk to a doctor or teacher if

Trouble focusing or stopping themselves affects both home and school, and doesn't ease after months of help
Can't step away from screens, so sleep, meals or being active suffer
Used to manage homework or routines alone, but hasn't for weeks

Sources: Harvard Center on the Developing Child – Executive function activities for adolescents · CDC Positive Parenting Tips (12–14 years) · AAP – HealthyChildren.org

Emotions

Common at this age

Moods go up and down more. At times they're short-tempered, curt or less affectionate.
Wants more privacy, and gets stressed by schoolwork or friendships.
Some days full of confidence, other days none at all.

Why it matters

Bigger feelings are part of growing up. Your child still leans on an adult who listens without judging, and the trust you build now helps them come to you with hard things later.

Try at home

Find relaxed one-on-one time, like a car ride or a walk. Listen to the end and reflect, “That sounds tiring”, before helping solve it.

Try 10–15 minutes a day

When feelings run high, allow time to calm down before talking. The feeling is OK, but be clear that hurting or insulting others is not.

Every time it happens

Eat together with no screens. Take turns sharing one good thing and one hard thing from the day.

Try one meal a day

Talk to a doctor or teacher if

Irritable or sad most of the day, or loses interest in things they loved, for more than 2 weeks
Big changes in sleep or eating, pulling away from friends and family, or worry that makes them avoid things
Stops doing things they used to manage, like self-care, homework or hobbies
Talks about death or wanting to disappear, or hides injuries: get help right away: call 1323 (Thailand's mental health hotline) or go to a hospital

Sources: AAP – HealthyChildren.org (emotional wellness) · CDC Positive Parenting Tips (12–14 years) · Department of Mental Health Thailand – Hotline 1323

Social

Common at this age

Friends matter a lot. Friendships get deeper and more complex, and they care what peers think of them.
Peer pressure grows, such as dares to do risky or dangerous things.
Many get a phone, game online or want social media, though most apps set 13 as the minimum age.

Why it matters

Your child is learning to be a good friend and to say no. Kids who feel good about themselves and can talk to an adult usually handle peer pressure better, offline and online.

Try at home

Get to know their friends and the friends' families. Invite friends over, and ask about them with interest, not interrogation.

Try having friends over 1–2 times a month

Make a family media plan together: screen-free times and places, the strictest privacy settings, who they can chat with, and no sharing personal details.

Review at the start of each term and during breaks

Practise ways to say no, like “Nah, let's do something else”, and tell them they can call you for a pickup any time.

Before outings or sleepovers

Talk to a doctor or teacher if

Doesn't want to go to school, belongings go missing or get broken, unexplained injuries, or friends suddenly drop away: talk with your child and the teacher
A new group of friends you're not allowed to meet, or won't say what's bothering them
Pulls away from close friends or quits groups or clubs they used to enjoy

Sources: CDC Positive Parenting Tips (9–11 and 12–14 years) · AAP Family Media Plan – HealthyChildren.org · StopBullying.gov – Warning signs

Independence

Common at this age

Wants to decide more for themselves: friends, hobbies, clothes, how to do homework.
Can take on real chores like simple cooking or laundry, and starts to understand saving money.
Even when they seem to pull away, the adults at home still matter a great deal.

Why it matters

Making safe choices and living with small consequences builds confidence and responsibility. Widen their freedom bit by bit as they show they can handle it.

Try at home

Give a regular job that uses real skills, like cooking one simple dish or washing and folding their own clothes.

Try 2–3 times a week

Let them set a goal to save for something they want and plan how much to put aside each week. When they get there, say “You must be proud of yourself.”

Check progress once a week

Before they go out alone, agree who with, home by when and when to call. Helmet on for bikes and motorbike rides; in the car, back seat until 13.

Every time they go out

Talk to a doctor or teacher if

So worried or afraid that they avoid things most kids their age do, like going to school or to a friend's house
Keeps taking risks, like disappearing without telling you, or shows signs of trying cigarettes, alcohol or drugs
Used to handle self-care like bathing, dressing or packing their bag, but has stopped for weeks

Sources: CDC Positive Parenting Tips (9–11 and 12–14 years) · AAP – HealthyChildren.org (Stages of Adolescence, car safety) · Harvard Center on the Developing Child

Moments parents of this age often meet

Wants a phone and social media like their friends
Bad test result, then silence
Body changes and questions about sex
Talking back
Refusing homework
Saying sorry after a fight
Rude words
Can't stop gaming
Being bullied at school
Fighting over the tablet

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 13–14 years

Early adolescence: puberty in full swing, ups and downs, a need for privacy, and friends starting to matter more than family.

Body and sleep

Common at this age

Puberty is in full swing. Many girls get their first period (around 12), and many boys' voices start to crack, with wet dreams and pimples.
Their body clock shifts later, so they get sleepy later and struggle to wake. Many get less than the 8–10 hours teens need.
They care a lot about looks and body shape, comparing themselves with friends and people online. Some start dieting or chasing muscles.

Why it matters

These changes are normal, but without a heads-up your child may feel embarrassed or scared. An adult who talks plainly and never teases makes it easier to ask. Enough sleep helps mood, focus and self-control.

Try at home

Talk about periods, wet dreams and hygiene using the real names for body parts, and say these are normal body changes. Keep spare pads in the school bag.

A short chat once a month, and whenever they ask

Agree on a bedtime that allows about 8–10 hours, screens off an hour before bed and phones charged outside the bedroom. Let your child help set the rules.

Every night

Get moving in ways they choose, like basketball, badminton, dance or swimming. Praise what bodies can do instead of talking about anyone's weight or shape.

60+ minutes a day on average; vigorous and strength activities 3+ days a week

Talk to a doctor or teacher if

A girl of 13 or a boy of 14 shows no signs of puberty yet
Periods so heavy that pads are changed every 1–2 hours, lasting over 7 days, or painful enough to miss school
Often skips meals or diets, vomits after eating, can't stop over-exercising, or loses weight noticeably

Sources: AAP – HealthyChildren.org (puberty; menstrual disorders, 2026) · AASM pediatric sleep recommendations (2016); WHO physical activity guidelines (2020) · AAP clinical report: Preventing Obesity and Eating Disorders in Adolescents (2016)

Thinking and learning

Common at this age

They start thinking more abstractly, question adults' rules and opinions, and get better at arguing.
Many feel as if everyone is watching them, so they embarrass easily and fear slipping up in front of friends.
Schoolwork gets harder and heavier, but planning skills haven't caught up, and the phone pulls focus easily.

Why it matters

The brain areas for planning and self-control keep maturing into the mid-20s, so your child reasons well when calm but slips when rushed or stressed. Reasoned debate at home is thinking practice, not disrespect.

Try at home

Debate things they care about, like news, games or videos. Ask “How do we know it's true?” and “Who gains from this post?”, then hear their reasons out.

Try 2–3 times a week, 10–15 minutes each

Teach study methods that work: close the book and test yourself or do past papers instead of rereading or highlighting, and spread study over several days rather than one late night.

Try 20–30 minutes a day, starting 1–2 weeks before a test

Help them set a goal they actually want, break it into small steps on a calendar, and keep the phone out of the room while working. Then review together what worked.

Once a week, about 15 minutes

Talk to a doctor or teacher if

Grades drop sharply, or they don't want to go to school for weeks
Reading, writing, maths or focusing is much harder than for classmates, even with effort and help
Often says they can't think, remember or decide, along with changes in sleep or eating

Sources: AAP – HealthyChildren.org (Stages of Adolescence, 2024) · NIMH – The Teen Brain: 7 Things to Know (2023) · Harvard Center on the Developing Child – Activities for Adolescents · US Institute of Education Sciences (IES) – Organizing Instruction and Study to Improve Student Learning, practice guide (2007)

Self-control and risk

Common at this age

They want to try new, exciting things, especially around friends.
Some first meet vapes, alcohol, or gambling hidden in games, like loot boxes and paying for a chance at prizes, through friends or ads.
They know what's risky, but when excited or egged on by friends, they may act before thinking.

Why it matters

Early in the teens the brain gives a lot of weight to friends and excitement, while the brakes are still catching up. Nicotine, alcohol and cannabis affect a growing brain, and people who start drinking before 15 face a higher risk of alcohol problems later. Frank talks and clear rules help.

Try at home

Talk openly about vapes, alcohol, cannabis and online gambling. First ask what they've seen and what they think, then calmly share your family's position.

Try once a month, and whenever it comes up in the news or at school

Agree on a code, like one emoji that means “Come get me”. Pick them up without grilling them on the spot, and talk another day.

Agree once; repeat it before parties or sleepovers

Set in-app and game purchases to need your approval. Helmet on for every motorbike ride, and no riding with someone who has been drinking.

Set once, review each term

Talk to a doctor or teacher if

You keep finding vapes or alcohol, or they want to stop but can't: talk to a doctor, or call 1600 (Thailand's quitline)
Unexplained game or app charges, missing money, lying about spending or screen time, or slipping grades
Keeps doing dangerous things, disappears without telling you, or often gets hurt doing stunts

Sources: NIMH – The Teen Brain: 7 Things to Know (2023) · CDC – E-cigarettes and youth; CDC – Cannabis and teens (2024); NIAAA – Underage drinking (2026) · AACAP Facts for Families No. 147 – Online gambling (2026) · Thailand National Quitline 1600

Emotions and mental health

Common at this age

Moods swing fast. They're easily irritated, curt, or less openly affectionate with parents.
They want more time alone in their room and get stressed by school, friends or looks.
Some days they feel on top of the world; other days, not good enough.

Why it matters

Hormones and a changing brain make feelings stronger, and many mental health problems, like low mood that lasts unusually long or worry that gets in the way of eating, sleeping or school, often begin in the teens. A child with an adult who listens without judging is more likely to speak up when things get too much.

Try at home

Find side-by-side time, like car rides, cooking or walks. Ask your child an open question, “Anything weighing on you today?”, listen to the end, and reflect the feeling before giving advice.

Try 10–15 minutes a day

Knock before going in and respect their space, but agree that you still share screen-free meals.

Try one meal a day

If they seem sad for a while, ask directly: “Have you thought about hurting yourself or about dying?” Asking does not raise the risk, and it shows them this can be talked about.

Whenever you notice signs

Talk to a doctor or teacher if

Sad, irritable or uninterested in things they loved most of the day, for more than 2 weeks
Big changes in sleep or eating, pulling away from friends and family, or worry that keeps them from school
Hidden cuts or marks, long sleeves even in hot weather, or saying they feel worthless
Talks about death or wanting to disappear, or says goodbyes: get help right away and don't leave them alone. Call 1323 (Thailand's mental health hotline); if in danger now, call 1669 or go to a hospital, and lock away medicines and sharp objects

Sources: AAP – HealthyChildren.org (teen mental health warning signs; lethal means, 2025) · CDC Positive Parenting Tips (12–14 and 15–17 years); NIMH – Warning signs of suicide (2025) · Department of Mental Health Thailand – Hotline 1323

Friends, love and online life

Common at this age

Friends matter hugely. They want to belong to a group, and many get their first crush.
They open their own social media accounts (many apps set 13 as the minimum) and chat or game with people they've never met.
Many have already seen porn online, some by accident and some on purpose.

Why it matters

Your child is learning friendship and first feelings of attraction. Online there are good friends and people who deceive. If they trust that telling you won't mean a scolding or losing the phone on the spot, they're more likely to come to you when something goes wrong.

Try at home

Talk about crushes without teasing. Explain that good relationships mean respect, the right to say no, and nobody pressuring you, in person or in chat.

Short chats when chances come up, like watching a show together

Make online rules together: no nude or private photos to anyone, and be wary of people who move you to private chats, give gifts or ask for secrets. If threatened, don't pay, save the evidence and tell us.

Set up with each new account; review every term

If you find out they've seen porn, stay calm. Explain that it doesn't show real love or real sex, and that they can ask you anything without getting in trouble.

Whenever it comes up

Talk to a doctor or teacher if

Bullied or shamed online, upset after reading messages, or avoiding school: save evidence, report it in the app and talk to the teacher
An older online friend gives gifts or money, asks them to keep secrets, or wants to meet up: stop contact, save evidence, and call 1300 or the police on 191
Threatened with having photos or videos shared: tell them it's not their fault, don't pay, save evidence, and report to the police or call 1300 (Thailand's 24-hour social assistance line). Take It Down (available in Thai) can help participating platforms remove the images

Sources: AAP – HealthyChildren.org (social media and first phones, 2026) · FBI – Sextortion guidance; UNICEF – Cyberbullying (2026) · Raising Children Network (Australia) – Pornography: talking with teenagers · Ministry of Social Development and Human Security – 1300 Prachabodi Center (24 hours)

Identity and the future

Common at this age

They try on different selves, changing style, music or interests often.
They want to decide on friends, clothes and hobbies themselves, yet still want parents close by.
Some start wondering who they are, like who they're attracted to or how they feel about their gender.

Why it matters

Your child is working out “Who am I?”. Trying things within safe limits helps them know themselves. Clear limits with warmth, and freedom that grows step by step, are linked to lower rates of long-lasting low mood and drug use.

Try at home

Praise their effort and what they do well, and let them try activities they choose, like sport, music, art or volunteering.

One new activity a term

Let them decide about their own things within agreed limits, like hair, their room or a weekly allowance, and widen this as they show responsibility.

Review the agreement every 3 months

As lower secondary school (M.3) ends, talk about what they enjoy, what they're good at and which study track appeals. Visit schools or talk with older students, and listen before giving your view.

Try once a month during M.3

Talk to a doctor or teacher if

Often puts themselves down, like “I'm worthless” or “Nobody cares about me”, for weeks
Drops nearly everything they used to love, or stops self-care they used to manage
Deeply distressed about identity or gender, avoiding school, bullied for who they are, or talking about self-harm

Sources: AAP – HealthyChildren.org (Stages of Adolescence, 2024) · CDC – Parents' influence on LGBTQ teens (2024) · CDC Positive Parenting Tips (12–14 years)

Moments parents of this age often meet

The school calls: a fight with a classmate
Stressed about grades and entrance exams
Secretly gambling online or betting on football
May already be having sex
Scammed online, or asked to “lend” a bank account
Shut in their room, barely talking
On the phone late, can't get up
Down, snappy and bored with everything
Self-harm, or talk of wanting to die
Came home drunk, or drinking with friends

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 15–16 years

Middle adolescence: searching for identity, deeper thinking, serious relationships, and the peak years for risk-taking.

Body and sleep

Common at this age

Most girls are nearly fully grown, with periods settling into a pattern. Many boys are still growing, with facial hair, deeper voices and acne.
They sleep late and wake late as the body clock shifts, plus homework and phones. Many get under 8 hours.
Some get very strict about their body: dieting, training hard or eyeing muscle-building supplements.

Why it matters

Bodies are nearly adult, but short sleep hurts focus, mood and self-control. Eating problems often start quietly in the teens. Avoiding talk about weight or shape, and eating together often, help protect against them.

Try at home

Have them plan their own sleep to get 8–10 hours: screens off an hour before bed, phone charging outside the room. If the workload is heavy, look together at what can be dropped or moved.

Every night

Talk about sex adult to adult: contraception, condoms, sexually transmitted infections, and where to get advice, like the 1663 hotline. Accurate information does not make teens have sex sooner.

Several short talks; no need to cover it all at once

Encourage movement they enjoy, and cook and eat together. Talk about bodies in terms of strength and what they can do, and don't criticise anyone's shape at home.

60+ active minutes a day on average; try one family meal a day

Talk to a doctor or teacher if

No period by 15, more than 3 months between periods, bleeding heavy enough to change pads every 1–2 hours, or lasting over 7 days
Clear weight loss, skipped meals, vomiting after eating, using diet pills or laxatives, or exercise they can't stop
Possible pregnancy, or genital symptoms like pain, itching, sores or unusual discharge: see a doctor soon, or call 1663 for advice

Sources: AAP – HealthyChildren.org (Stages of Adolescence; menstrual disorders, 2026) · AASM pediatric sleep recommendations (2016); WHO physical activity guidelines (2020) · AAP clinical report on eating disorders (2016); WHO – Comprehensive sexuality education (2023) · 1663 AIDS and unplanned pregnancy counselling line (AIDS Access Foundation, supported by the Department of Health)

Thinking and learning

Common at this age

They think abstractly with ease, care about society and fairness, and argue with deeper reasoning.
They start worrying about further study and careers; some feel pressure from grades and entrance exams.
Planning improves, but they still put things off or multitask until work doesn't get done.

Why it matters

Reasoning grows a lot, but when emotions run high or they're tired, self-control still lags. An adult who truly hears their reasons and coaches instead of commanding lets them practise deciding before they head out into the world.

Try at home

Ask their view on things that matter, like news, money or family decisions. Share your thinking with reasons, and accept it when you disagree.

Try 2–3 times a week

Help plan study that works: spread it over many days, self-test with past papers, and sleep well before exams instead of cramming all night.

Start 2–3 weeks before exams; try 30–45 minutes a day

Hand them real thinking jobs, like budgeting a family trip, comparing prices for a big purchase or researching study options. Then ask what they learned.

Try one job a month

Talk to a doctor or teacher if

Grades drop sharply, they often miss school, or they stop handing in work for weeks
So stressed about school they can't sleep, get frequent headaches or stomach aches, or say life is over if they fail an exam
Can't focus, remember or decide like before, along with low mood, withdrawal, or alcohol or drug use

Sources: CDC Positive Parenting Tips (15–17 years) · AAP – HealthyChildren.org (Stages of Adolescence, 2024) · US Institute of Education Sciences (IES) – Organizing Instruction and Study to Improve Student Learning, practice guide (2007) · Harvard Center on the Developing Child – Activities for Adolescents

Self-control and risk

Common at this age

This is often the peak age for risk-taking, both good, like trying new things, and dangerous.
Many come across alcohol, vapes, cannabis, or betting sites and football betting, at parties and on their phones.
They start riding motorbikes or going out with friends on their own, and want to stay out later.

Why it matters

Brain areas tuned to friends and social life become very active from early puberty while self-control matures more slowly, so mid-teens take risks more easily, above all with friends around. Road crashes are a leading cause of teen deaths. Clear rules your teen helps set make a big difference.

Try at home

Agree on going-out rules together: who with, where, home by when, and a text on arrival. Let them propose first, and widen their freedom as they keep to it.

Agree once, review monthly

Rehearse tough moments, like being handed a drink or a vape, or a driver who's been drinking. Help them find words to say no, and promise a pickup any time with no scolding on the spot.

Before parties, camps or nights out

If they ride a motorbike, agree on a licence, a helmet every time, no riding or riding pillion after drinking, and no phone while riding.

Every time they head out

Talk to a doctor or teacher if

Repeated drinking, vaping or cannabis use that affects school, sleep or relationships: talk to a doctor, or call 1600 (quit smoking) or 1413 (quit drinking)
Missing money, debts, borrowing from friends, selling things, or lying about money or screen time may point to online gambling: get advice at 1323
Repeated accidents or injuries, riding after drinking, or staying out overnight and unreachable

Sources: NIMH – The Teen Brain: 7 Things to Know (2023) · WHO – Adolescent health risks and solutions (2024) · CDC Positive Parenting Tips (15–17 years); CDC – Cannabis and teens (2024) · AACAP – Online gambling (2026); Thai hotlines 1600, 1413, 1323

Emotions and mental health

Common at this age

Moods are steadier than in the early teens and fights with parents ease, but school, love and friends still stress them easily.
They often keep feelings to themselves, or tell friends before parents.
Some feel deeply sad, worried or empty, and hide it so well the family doesn't notice.

Why it matters

Low mood that lasts unusually long, and worry that gets in the way of eating, sleeping or school, are among the leading health problems in teens, and suicide is the third leading cause of death for 15–29-year-olds worldwide. Deep sadness can lead to drinking or drug use. A trusted adult makes a real difference, and help works.

Try at home

Ask specific questions, like “How are exams, friends or your relationship going?” Listen without rushing to teach or comparing with your own teenage years.

Try 10–15 minutes a day, like in the car or before bed

Help them find what calms them, like exercise, music, writing or a close friend, and name another adult they trust, like a teacher or relative.

Talk once, then revisit at exam time or in stressful stretches

If they seem low for a while, ask directly whether they've thought about hurting themselves or dying. Asking doesn't raise the risk. Lock away medicines, sharp objects and alcohol at home.

Whenever you notice signs

Talk to a doctor or teacher if

Sad, irritable or uninterested in things they loved most of the day, for more than 2 weeks
Worry or panic that makes them avoid school or people, or big changes in sleep, eating or weight
Self-harm, hidden injuries, or using alcohol or drugs to numb the pain
Says or posts that they want to die, says goodbyes, or gives away treasured things: get help right away. Call 1323 (Thailand's mental health hotline); if in danger now, call 1669 or go to a hospital, and don't leave them alone

Sources: WHO – Mental health of adolescents (2025) · AAP – HealthyChildren.org (lethal means, 2025); CDC Positive Parenting Tips (15–17 years) · NIMH – Warning signs of suicide (2025) · Department of Mental Health Thailand – Hotline 1323

Friends, love and online life

Common at this age

Close friendships run deep, and loyalty to the group matters a lot.
Many start dating or get serious with someone, and become more interested in sex.
Social media is the main place to talk with friends; some stay on late or stress over likes and comments.

Why it matters

Deep relationships teach trust and respect, but can also bring jealous control or sexual pressure. Teens on social media more than 3 hours a day have been found to face about double the risk of symptoms of low mood and heavy worry.

Try at home

Talk about consent: both people agree without pressure, either can change their mind any time, someone drunk or passed out can't consent, and love isn't checking phones or banning friends.

Talk several times, like while watching shows or news together

Get to know their partner and close friends and invite them over. Say that if anyone asks for private photos, threatens them or makes them uneasy, they can tell you without getting in trouble.

Have them over 1–2 times a month

Agree phone-free times for the whole family, like meals and the hour before bed, and help them tidy their feed by unfollowing accounts that make them feel bad about themselves.

Daily; review the family media plan every term

Talk to a doctor or teacher if

A partner or friend controls them, is intensely jealous, checks their phone, threatens or hurts them, or your teen cuts off old friends
Threatened with having photos or videos shared: tell them it's not their fault, don't pay, save evidence, report to police or call 1300, and if the images were taken under 18, use Take It Down (available in Thai) so participating platforms can remove them
Bullied or shamed online until they don't want to go to school, or frightened every time a message arrives
Forced or sexually assaulted: get to a hospital as soon as possible, ideally within 72 hours, and call 191 or 1300

Sources: US Surgeon General – Social Media and Youth Mental Health advisory (2023) · HealthLinkBC – Teaching teens about consent (2022); AAP – Dating violence tips for parents · FBI – Sextortion guidance; NCMEC – Take It Down · UNICEF – Cyberbullying (2026); Ministry of Social Development and Human Security – 1300 Prachabodi Center

Identity and the future

Common at this age

They're working out who they are and what they believe, and may disagree with you on some things.
They start thinking seriously about study, careers or earning money; some want a part-time job.
Some are exploring their sexual orientation or gender identity and may not be ready to tell anyone.

Why it matters

Knowing what they value helps teens choose their path and resist pressure. A parent's acceptance is strongly protective: LGBTQ+ teens who feel valued by their parents are less likely to have long-lasting low mood, use alcohol or drugs, or attempt suicide.

Try at home

Talk about values and goals: “What are you proudest of this year?” “Where do you want to be in 5 years?” Listen without steering.

Try once a month

Support real-world tries, like volunteering, a holiday job or shadowing someone you know at work, then talk about what they liked and didn't.

One try each school break

If your child opens up about identity or who they like, thank them for trusting you, listen to the end, let them choose who to tell and when, and keep including them in family life as before.

Every time they open up

Talk to a doctor or teacher if

Hopeless about the future, saying “Nothing will get better”, or stops making any plans for weeks
Bullied or rejected for who they are, leading to withdrawal, skipping school or talk of self-harm
Drops out of school or quits everything they cared about, with no other plan

Sources: CDC Positive Parenting Tips (15–17 years) · CDC – Parents' influence on LGBTQ teens (2024) · AAP – HealthyChildren.org (Stages of Adolescence, 2024)

Moments parents of this age often meet

The school calls: a fight with a classmate
Wants to go out at night, stay late or sleep over
A pregnancy: your daughter, or your son's girlfriend
Stressed about grades and entrance exams
Secretly gambling online or betting on football
May already be having sex
Scammed online, or asked to “lend” a bank account
Shut in their room, barely talking
On the phone late, can't get up
Down, snappy and bored with everything

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Age band 17–18 years

Getting ready for adulthood: thinking is more reasoned, and they start deciding about study, work and their own life.

Body and sleep

Common at this age

Most bodies are nearly fully grown, though some, often boys, may still add a little height and muscle.
Their body clock runs late, so they get sleepy late and struggle to wake early. With homework, tutoring and phones on top, many don't get enough sleep.
Some worry about weight and shape, or want a lot more muscle, and may diet or exercise too hard.

Why it matters

Enough sleep helps memory, mood and safety, especially once they ride or drive, since drowsy driving is risky. The sleep, eating and movement habits built now tend to go with them when they leave home.

Try at home

Let them plan their own sleep: count back from wake-up time to get 8–10 hours, screens off an hour before bed, the phone charging outside the room, and no energy drinks late at night.

Every night, exam season included

Encourage movement they choose, like running, swimming, dancing, or weights with someone teaching good form. Keep that time even in heavy study weeks.

60 minutes a day on average, vigorous or strength work 3 days a week (from 18: 150–300 minutes a week, plus strength 2 days)

Build health self-care before they leave home: they book their own doctor's visits, know their medicines and allergies, know the nearest hospital to where they'll live, and know to call 1669 in a medical emergency.

Try one skill a month

Talk to a doctor or teacher if

Very sleepy in the day despite enough sleep, or can't sleep most nights for weeks
Fast weight loss or gain, often skipping meals, eating only a few foods, secretly vomiting after eating, or exercising compulsively. See a doctor now; don't wait for them to agree there's a problem
Uses pills, injections or supplements to lose weight or build muscle that weren't prescribed by a doctor

Sources: AASM / AAP – HealthyChildren.org (teen sleep, 8–10 hours) · WHO guidelines on physical activity and sedentary behaviour (2020) · AAP – HealthyChildren.org (checkups at 17–18, eating disorders, college health)

Thinking and learning

Common at this age

Thinks more logically and further ahead, weighs pros and cons, and can explain why they chose something.
Many worry more about further study and work. The last school year brings exams, portfolios and several TCAS rounds, while some are in vocational school or starting work.
Adult study habits take shape, like planning revision and finding information on their own, yet some still put things off or study so hard they barely rest.

Why it matters

Your child is making some of life's first big decisions. Test scores don't define their worth. Thinking things through and choosing, with an adult in their corner, prepares them to run their own life.

Try at home

Let your child lead the further-study plan. They look up courses, requirements and key dates; you ask, listen and help think of a plan B, without deciding for them.

Try a weekly sit-down, about 20–30 minutes

Help set up a study plan with real breaks: study in blocks with rests, keep half a day off each week, and don't trade sleep for study time.

Try 45–50 minutes, then a 10-minute break

Help them try things for real before choosing: university open days, talks with older students or people in that job, a part-time job or volunteering.

Try once a month, or during school breaks

Talk to a doctor or teacher if

Grades drop sharply, or schoolwork suddenly feels far harder than before
Fixated on one goal, believing life is ruined without that course, or studying so much they barely sleep
Headaches, stomach aches, a racing heart or heavy worry around exams, to the point of missing school or tests
Focus, memory, reading or writing gets worse than it used to be

Sources: CDC Positive Parenting Tips (15–17 years) · AAP – HealthyChildren.org (college-bound teens; teen mental health warning signs) · Thai university admissions – mytcas.com (TCAS rounds)

Self-control and risk

Common at this age

Better at self-control and weighing risk, but when tired, stressed, drinking or with friends they can still take risks; this part of the brain keeps maturing into the mid-20s.
Many ride motorbikes or start learning to drive (a car licence is possible from 18 in Thailand), and go to parties with alcohol, vapes or other substances.
With more money and their own accounts, they may meet online gambling, get-rich-quick offers, or people asking to rent their bank account.

Why it matters

Road crashes are the leading cause of death worldwide for people aged 5–29. Plans agreed ahead help them pick the safe option in a hard moment.

Try at home

Make a driving agreement: helmets every time for rider and passenger, seat belts, no phone, no driving sleepy or after drinking, no rides with a driver who has been drinking. Early on, no late-night driving and no carloads of friends.

Agree before they start; strictest for the first 6 months

Agree: “Call me and I'll come anywhere, no questions tonight” if they've been drinking, the driver has, or they feel unsafe. Talk it through the next day, and be clear that Thai law bans selling alcohol to anyone under 20.

Before every party or night away

Practise money skills: they make their own monthly budget, turn on banking-app alerts, follow “don't click, don't believe, don't rush, don't transfer”, and don't rent or lend out their account. Mule accounts are a crime that can mean jail.

Try reviewing the budget together once a month

Talk to a doctor or teacher if

Drinks until they can't remember, uses alcohol or other substances more often, or can't quit vaping alone: see a doctor (to quit smoking or vaping, call 1600, free)
After drinking or using something, can't be woken, breathes slowly or irregularly, is cold and pale, or has a seizure: call 1669 at once and don't leave them alone
Often borrows money, money vanishes unexplained, lies about money, or gets irritable when they can't gamble: call the 1323 mental health hotline
Scammed into sending money, or their account was used for a crime: call 1441 (24 hours) to get accounts frozen as fast as possible

Sources: WHO – Road traffic injuries (2026); CDC – Parents Are the Key (teen drivers) · NIMH – The Teen Brain; NIAAA – Alcohol overdose · Thailand National Quitline 1600; Dept. of Mental Health – gambling, 1323; Ministry of Digital Economy and Society – AOC 1441

Emotions and mental health

Common at this age

Moods often steady, reasoning comes easier and clashes with parents ease. Many families start talking adult to adult.
Yet stress about exams, the future, love and money can build up. Some wear down until they burn out and don't want to do anything.
Worry becomes more common in older teens, and many mental health problems first show up during adolescence.

Why it matters

The sooner signs are noticed and help arrives, the better the chance things improve. Asking directly about suicide or self-harm doesn't put the idea in their head, and it may help them open up.

Try at home

Make time to check in without interrogating, like while driving or cooking together. Ask “What's weighing on you most lately?” and listen to the end before advising.

Try 2–3 times a week, 10–15 minutes each

If they seem hopeless, ask calmly and directly, “Have you thought about dying or hurting yourself?” If yes, stay close, lock away medicines and chemicals at home, and get them to a professional.

Whenever they don't seem like themselves

Try the Department of Mental Health's online Mental Health Check-In together, and plan for bad days: what helps, and who they can call, including the 1323 hotline.

Before exam season or a move away from home

Talk to a doctor or teacher if

Sad, irritable or uninterested in everything most of the day, for more than 2 weeks
Big changes in sleep, eating or weight, pulling away, or worry that makes them avoid school or people
Drinking or using more, taking reckless risks like very fast driving, or giving away treasured things and saying goodbye
Talks about death, wanting to disappear or being a burden, hides injuries, or looks up ways to self-harm: don't leave them alone. Call 1323 (free, 24 hours) or go to a hospital now; if there's immediate danger, call 1669

Sources: AAP – HealthyChildren.org (teen mental health warning signs, 2025) · NIMH – Warning Signs of Suicide; Suicide FAQ · WHO – Adolescent mental health (2025) · Department of Mental Health Thailand – Hotline 1323, Mental Health Check-In

Friends, love and online life

Common at this age

Often prefers a few close friends to a big group. Friendships get deeper and steadier, and they spend more time with friends than family.
Many date or think seriously about love and sex. Some become sexually active, and some are still working out their sexual or gender identity.
Online life ties into friends, love, work and money, bringing good things and risks, like bullying or being tricked into sending photos and then threatened.

Why it matters

Your child is practising adult relationships. Knowing about consent, protection and how to get help usually does more than rules alone, and teens who know they can tell you without blame tend to speak up sooner.

Try at home

Talk about sex plainly, without judgement: consent is a clear yes, can be taken back, and can't be given when drunk. If they have sex, a condom every time plus another birth control method (in Thailand, young women under 20 can get an implant or IUD free).

Short talks, many times, when a moment comes up, like watching a series together

Talk about healthy love: someone who cares doesn't demand your phone, threaten you, cut you off from friends or share private photos. Try asking, “How do you feel when you're with them?”

When they start talking about someone they like, and now and then after

Say it before anything happens: if someone threatens to share photos or demands money, it's not their fault. Don't pay, stop replying, save the evidence, block, and tell you; you'll report it together.

Talk now, and revisit when it's in the news

Talk to a doctor or teacher if

Threatened with photos or videos, or badly bullied online: save evidence, report at thaipoliceonline.go.th or call 191, and get them professional support (if the images were taken under 18, Take It Down, available in Thai, can help participating platforms remove them)
A partner controls, threatens, hurts or pressures them sexually, or they seem afraid with unexplained injuries: call 1300 (24 hours); in immediate danger, call 191
Worried about a possible pregnancy, or has unusual genital symptoms: see a doctor or call the 1663 hotline; the sooner, the more options
Pulls away from all their friends or quits activities they used to enjoy

Sources: AAP – HealthyChildren.org (teens, sex and consent, 2025; sextortion, 2025) · CDC – About teen dating violence (2025) · UNICEF Thailand – Online Safety Manual for Children and Young People (2025) · 1663 counselling line (AIDS Access Foundation, supported by the Dept. of Health); NHSO – free implant/IUD under 20

Identity and the future

Common at this age

Knows themselves better, can say what they value, and holds their own views on society or beliefs, which may differ from the family's.
Wants to rely on themselves and manage their own time, money and private life. Many get ready to move away to study, work or live in a dorm.
Gains some adult rights at 18, like voting and taking a car licence (legal adulthood in Thailand starts at 20), yet still wants parents as advisers.

Why it matters

Your child is moving from someone you look after to an adult who comes to you for advice. A relationship that lets them try while staying a safe base helps them choose their own way and come back when things go wrong.

Try at home

List life skills before they leave home and let them do each one for real, like laundry, cooking, paying bills, getting around alone, dealing with offices, and handling a lost wallet or phone.

Try one a week in the 6–12 months before a move

Ask about dreams without judging, like “If nobody expected anything, what would you try?”, and share your own story, wins and missteps, so they see a change of direction is possible.

Try once a month, somewhere relaxed

Agree how you'll stay in touch when they're away: how often feels right to you both, which app, and what means calling straight away. Make sure they know the health and counselling services where they study or work.

Agree before the move; adjust after the first month

Talk to a doctor or teacher if

So worried about leaving home or the future that they skip school, miss exams or interviews, or can't start anything new
Keeps saying they see no future, “nothing will get better” or “I'm a burden”: treat it as serious and talk to a professional or call 1323
Deeply distressed about who they are or their gender or sexuality, teased or shut out, and withdrawing
After moving out, unusually hard to reach, or sleep, eating and studies slide for more than 2 weeks

Sources: AAP – HealthyChildren.org (Stages of Adolescence, 2024) · AAP – HealthyChildren.org (checkups at 17–18; college-bound teens; mental health at college) · CDC Positive Parenting Tips (15–17 years)

Moments parents of this age often meet

Wants to go out at night, stay late or sleep over
A pregnancy: your daughter, or your son's girlfriend
Stressed about grades and entrance exams
Secretly gambling online or betting on football
May already be having sex
Scammed online, or asked to “lend” a bank account
Shut in their room, barely talking
On the phone late, can't get up
Down, snappy and bored with everything
Self-harm, or talk of wanting to die

What to say and do for each, fitted to your child's energy type, is in the Family Blueprint app

When to see a professional

If your child loses a skill they had, or you keep worrying, talk to a paediatrician.

Every child is different. Every family is unique.

What tends to happen at this age

Body

Language and thinking

Self-control

Emotions

Social

Doing it myself

Moments parents of this age often meet

Body

Language and thinking

Self-control

Emotions

Social

School readiness

Moments parents of this age often meet

Body

Thinking and learning

Self-control

Emotions

Social

Responsibility

Moments parents of this age often meet

Body

Thinking

Self-control

Emotions

Social

Independence

Moments parents of this age often meet

Body and sleep

Thinking and learning

Self-control and risk

Emotions and mental health

Friends, love and online life

Identity and the future

Moments parents of this age often meet

Body and sleep

Thinking and learning

Self-control and risk

Emotions and mental health

Friends, love and online life

Identity and the future

Moments parents of this age often meet

Body and sleep

Thinking and learning

Self-control and risk

Emotions and mental health

Friends, love and online life

Identity and the future

Moments parents of this age often meet

Ready to see your family in a new light?