Chorevia

Preschool · 4 to 5 years

Age 4: Development, Research, and What Helps

Last reviewed · 18 min read · 14 activities · 12 common questions · 88 sources · Plain-text version

Four-year-olds tell long stories, make up rules, and test the truth. Here's what's developing, what research really says about early reading, math, lying, and holding kindergarten off a year, and what helps at home.

A 4-year-old works on a big floor puzzle while a parent claps and cheers from the couch.

At a glance

  • Most 4-year-olds talk in sentences of four or more words, pretend, comfort friends, and like to help. A missed milestone is a reason to ask now.
  • Short, playful games with sounds and letters build the skills that predict reading. Drills and pushing early reading don't.
  • Everyday number talk matters. Math skills at kindergarten entry predicted later achievement better than reading or attention skills.
  • First lies are a sign that thinking skills are growing. Calm responses and praise for telling the truth work better than punishment.
  • The evidence on holding a child out of kindergarten for a year is mixed. Decide based on your child, not just their birthday.
  • Plan on 10 to 13 hours of sleep a day. Nearly all children stop napping by 5, so quiet time and an earlier bedtime help.
  • Keep a harnessed car seat until your child outgrows it. Most 4-year-olds aren't ready for a booster yet.
  • Teaching young kids not to touch guns didn't work in a trial. Locked, unloaded storage is what protects them.

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Four is a year of long stories, made-up rules, and first attempts at fibbing. Most 4-year-olds play with other children, comfort friends, and like to be a helper (CDC). This guide covers ages 4 to 5. For the year before, see the 3-year guide; kindergarten itself is in the 5-year guide.

What's developing

CDC's milestone checklists list skills that at least 75% of children show by each age, so a missed milestone is a reason to check in now, not to wait and see (Zubler et al., 2022).

Milestones by 4 years

By 4 years, most children (CDC):

  • Social and emotional: pretend to be something else in play (a teacher, a superhero, a dog), ask to play with other children, comfort others who are hurt or sad, avoid danger like jumping from tall heights, like to be a "helper," and change their behavior based on where they are, like a library or playground.
  • Language: say sentences of four or more words, say some words from a song, story, or nursery rhyme, talk about at least one thing that happened during their day, and answer simple questions like "What is a coat for?"
  • Thinking: name a few colors, tell what comes next in a well-known story, and draw a person with three or more body parts.
  • Movement: catch a large ball most of the time, serve themselves food or pour water with an adult watching, unbutton some buttons, and hold a crayon between fingers and thumb instead of in a fist.

Next up, on the 5-year list: following game rules, simple chores like matching socks, recognizing rhymes, counting to 10, and writing some letters of their name (CDC).

Body and movement

The AAP describes 4- to 5-year-olds who stand on one foot for 10 seconds or longer, hop, somersault, and climb. They copy a triangle, print some letters, dress without help, and usually handle their own toilet needs (AAP). WHO advises at least 180 minutes of physical activity a day at this age, including 60 minutes of moderate to vigorous play (WHO).

Talking and stories

By 5, strangers should be able to understand what your child says, and many children tell long stories and can say their name and address (AAP). Many 4-year-olds pretend to read a favorite book and "correct" you if you skip a page (AAP). Repeated words and some stuttering are normal; get an evaluation if stuttering lasts more than 6 months (AAP).

Thinking, attention, and other minds

Between 4 and 5, children learn to count 10 or more objects and name at least four colors (AAP), and ask big questions about death and the sky (AAP). Executive function, the brain skills behind planning, waiting, and focusing, develops rapidly from 3 to 5 (CFPB, 2016). By 5, most children can pay attention for 5 to 10 minutes during activities like story time (CDC).

They're also learning that people can believe things that aren't true: across 178 studies, children went from mostly failing to mostly passing "false belief" tests over the preschool years (Wellman et al., 2001). That skill makes first lies possible.

Friends, rules, and fairness

Four-year-olds want to please their friends and are more likely to agree to rules (AAP). Expect "That's not fair!" when a friend gets more. In a study of 866 pairs of children ages 4 to 15 in seven societies, objecting to getting less than a peer appeared everywhere by middle childhood, while turning down a bigger share for yourself came later and only in three societies (Blake et al., 2015).

Big feelings

Most 4-year-olds can name emotions, even subtle ones like worry, in themselves and others. They're easily encouraged or hurt by what others say and do (AAP). Children who understand emotions better tend to have somewhat stronger social skills and fewer behavior problems (Trentacosta & Fine, 2010).

Bodies and curiosity

Many 4- and 5-year-olds ask where babies come from and how bodies differ; answer simply, with the correct words (AAP). Touching their own genitals, or trying to see others undressed, is common from about 2 to 6 and usually normal curiosity (AAP).

Sleep, naps, and nights

Children this age need 10 to 13 hours of sleep a day, naps included (CDC; WHO). In a 2020 meta-analysis, 94% of children had stopped napping by 5 (Staton et al., 2020). Nightmares tend to peak between 3 and 12 (AAP), and wet nights are still common (AAP).

What the research says

Some findings about this age are solid. Several popular ideas are shakier than they look.

1. Sounds and letters matter, but drills don't. A federal panel's review found that knowing letter names and sounds, phonological awareness (hearing the sounds inside words), and writing one's name had medium to large links to later reading, even after accounting for IQ and family income. Teaching these skills, mostly through sound games, had moderate to large effects. It was usually done one-on-one or in small groups, and few of those programs relied mainly on rhyming (National Early Literacy Panel, 2008). The AAP warns against drilling; some early readers lose their head start by second or third grade (AAP). Takeaway: Play with sounds and letters for a few minutes at a time. Skip the flashcard drills.

2. Interactive reading helps, though less at 4. In a meta-analysis of 16 studies, "dialogic" reading, where the adult asks questions so the child does more of the talking, built vocabulary more than ordinary reading aloud, but the effect shrank substantially for 4- and 5-year-olds and for children at risk of language problems (Mol et al., 2008). The What Works Clearinghouse rates it as having positive effects on oral language and no discernible effect on phonological skills (WWC). Takeaway: Keep asking questions as you read, and add sound and letter play, because stories alone don't teach how print works.

3. Early math predicts a lot. Across six large studies, math skills at kindergarten entry predicted later achievement better than reading or attention skills did (Duncan et al., 2007). That's a link, not proof. In a study of 44 families, toddlers who heard more number talk knew more about number words at nearly 4 (Levine et al., 2010). In experiments, about an hour of a numbered board game boosted low-income preschoolers' number skills for at least 9 weeks (Ramani & Siegler, 2008), and math stories at home raised first graders' math scores (Berkowitz et al., 2015). Takeaway: Count, compare, and measure out loud as part of everyday life.

4. Delaying kindergarten has mixed evidence. Only about 4% to 5.5% of US children start kindergarten a year late, most often boys and white or higher-income children (Bassok & Reardon, 2013). Starting a year later reduced inattention and hyperactivity at 7 in Denmark, mainly in girls (Dee & Sievertsen, 2018), and raised math and reading scores in North Carolina, though the authors found it further disadvantaged students of color (Jenkins & Fortner, 2024). But the AAP notes that most academic problems of the youngest children fade by third or fourth grade, and some research links being old for one's grade with more behavior problems in adolescence (AAP). Age also shapes how adults judge behavior: in states with a September 1 cutoff, August-born children were diagnosed with ADHD more often than September-born classmates (Layton et al., 2018). Takeaway: There's no default answer. Weigh your child's skills with their preschool teacher and pediatrician.

5. Self-control grows with practice, but programs disappoint. Programs that work involve repeated practice that gets gradually harder (Diamond & Lee, 2011), but training one skill rarely carries over to others (Kassai et al., 2019). Tools of the Mind, a play-based curriculum, shows the mixed picture: a US trial in 60 pre-K classrooms found no positive effects on any outcome through first grade (Nesbitt & Farran, 2021). In Canada, a preschool trial found gains only for the most inattentive children (Solomon et al., 2018), and a kindergarten trial reported better reading, writing, and self-control (Diamond et al., 2019). Takeaway: Games that ask your child to stop, wait, and switch are good practice. Skip anything sold as brain training.

6. First lies are a thinking milestone. In "don't peek" experiments, most young children peek, and lying about it rises with age (Evans & Lee, 2013). Lying is tied to understanding what others believe and to self-control (Talwar & Lee, 2008). Punishment can backfire: 3- and 4-year-olds from a West African school that used harsh punishment lied more, and more skillfully, than children from a gentler school (Talwar & Lee, 2011). Among 372 children ages 4 to 8, simply hearing that the adult would be happy to hear the truth increased truth-telling (Talwar et al., 2015). Takeaway: Make the truth safe to tell, and praise it when you hear it.

7. With screens, what and how matter as much as how long. Across 42 studies of 18,905 children, more screen time and background TV went with weaker language skills, and educational programs and watching together went with stronger ones. The links are small and can't prove cause (Madigan et al., 2020). Good content can help: children who could get Sesame Street when it launched in 1969 were more likely to be in the right grade for their age (Kearney & Levine, 2015). The AAP's 2026 policy stresses quality, context, and conversation (Munzer, AAP). Takeaway: Choose quality shows, watch together when you can, and protect sleep and play.

8. Gun safety lessons don't stop young children from touching guns. In a randomized study of 70 children ages 4 to 7, a week-long gun safety program made no difference. When pairs of children later played in a room with a handgun within reach, 53% of the pairs played with it (Hardy, 2002). Storage does matter: guns involved in youth shootings were much less likely than other household guns to have been stored locked or unloaded (Grossman et al., 2005). Takeaway: Teach the rule, but rely on the lock.

Parenting techniques

Coach feelings, then hold the limit

In a trial with parents of 216 children ages 4 and 5, teaching parents to name and talk through emotions improved children's emotion understanding and reduced behavior problems (Havighurst et al., 2010).

Script: "You're furious that Sam knocked over your tower. I get it. You can't hit. Do you want to tell Sam how you feel, or build it again together?"

When your child lies

Say calmly that you know it isn't true. Harsh punishment usually isn't effective and can push children to keep lying. Make two points instead: you'll always tell each other the truth, and they'll get in much less trouble for telling the truth than for lying. Children under 6 can blur fantasy and reality, so a wild tall tale isn't the same as a cover-up (AAP).

Script: "I can see the crayon on the wall. I'd be really happy if you told me what happened. Then we'll clean it up together."

Limits, choices, and time-outs

Explain limits simply and offer small choices (CDC). For behavior like hitting, the AAP's time-out formula is a warning, then 1 minute per year of age: 4 minutes at 4. You can also try "Come back when you feel ready," which lets your child practice calming down (AAP). Skip spanking, yelling, and shaming; the AAP says they don't work in the long term (Sege & Siegel, 2018).

Fair play and taking turns

Remind children that when two share a toy, each gets an equal turn, and suggest simple fixes like drawing for the first turn. Ask for an apology only once your child understands what they did (AAP). CDC suggests simple games like tic-tac-toe and outdoor games like tag and hide and seek (CDC).

Getting ready for kindergarten

Readiness is social and emotional as much as academic: paying attention, controlling impulses, taking turns, following directions, and making friends. Kindergarten readiness tests are far from perfect (AAP). Birthday cutoffs vary by state, from July 31 to January 1. If you're unsure, ask your child's preschool teacher and ask to see a kindergarten day's schedule (AAP). For the waiting-a-year question, see below.

Sleep as the nap fades

  • Keep a set bedtime. Don't wait for yawning; moving bedtime 15 to 20 minutes earlier can make a big difference (AAP).
  • After a nightmare, go quickly, reassure your child, remind them dreams aren't real, and leave a light on if it helps (AAP).
  • Melatonin isn't a sleeping pill. Use it only after talking with your pediatrician and setting up healthy sleep habits (AAP).

What to teach

Four-year-olds are ready for real responsibilities, early money ideas, and body safety rules. Keep lessons short, hands-on, and repeated.

Letters, sounds, and numbers through play

Point out colors, shapes, numbers, and letters in books (AAP), and count everyday things like fingers, toys, or bananas (CDC). Sound games like first-sound I spy and letter play like a name letter hunt target the skills most linked to later reading (National Early Literacy Panel, 2008). Let your child set the pace (AAP).

Family jobs: chores for 4-year-olds

Liking to be a helper is a 4-year milestone, and CDC suggests chores like bringing in the mail, feeding a pet, or wiping tables (CDC). Matching socks and clearing the table are on the 5-year list (CDC), and the AAP lists setting the table, sorting laundry, and watering flowers for 5- to 7-year-olds (AAP). At 4, do them side by side.

Good jobs at 4:

  • Setting the table and carrying their own plate to the counter
  • Sorting laundry by color and matching socks
  • Watering plants with a small cup or can
  • Feeding a pet while you measure the food
  • Putting toys back in their bins

Praise the effort, not the result, and use a simple chart as a reminder (AAP). Chores may build more than tidy rooms: a parent survey linked chores with stronger working memory and self-control in children 5 to 13, though that can't prove cause (Tepper et al., 2022).

Keep family jobs unpaid, because everyone pitches in where they live. Research on paying kids for chores is limited and mixed. The AAP mentions allowances and stickers as possible rewards (AAP), but toddlers given a material reward for helping later helped less (Warneken & Tomasello, 2008), and a 1999 meta-analysis of 128 experiments, published with critical commentaries, found that expected, tangible rewards reduced later motivation, more so in children (Deci et al., 1999). Optional paid extras fit better later. See chores by age and rewards without bribery.

Money: earning, waiting, and choosing

CFPB says children 3 to 5 are usually too young for abstract money concepts but are building the foundation. Talk about four ideas: you earn money by working, you may have to wait and save, you plan ahead, and every purchase is a choice between needs and wants (CFPB).

  • Make it concrete. Name coins, notice fun things that are free, like the library (CFPB), and think out loud about your choices (CFPB).
  • Spend, save, give. Label a jar for saving (CFPB). Some families add spend and give jars; in one experiment, toddlers looked happier giving treats away than getting them (Aknin et al., 2012).

You don't need a regular allowance at 4. For what comes next, see teaching kids financial skills.

Body safety and the always-tell-me rule

  • Use the real words: penis, vagina, breasts, and buttocks. Private parts are the ones a swimsuit covers (AAP).
  • OK and not-OK touches. A not-OK touch hurts, feels confusing or scary, or involves private parts. Don't force hugs or kisses, even for grandparents (AAP).
  • Surprises versus secrets. Surprise-party secrets are fine; secrets about touching always get told. Tell your child you'll believe them and they won't be in trouble. Abusers are usually someone the child knows (AAP).

Activities to try

Pick a few that fit your week. The ratings show how well each idea has been tested; most everyday activities haven't been, and that's fine.

How we rate the evidence
Strong evidence
Randomized trials or systematic reviews show a consistent benefit.
Moderate evidence
Consistent observational research, or a major guideline (AAP, WHO) built on research.
Emerging evidence
Small or early studies. Plausible, not yet proven.
Mixed evidence
Studies disagree, or reviews rate the evidence as weak.

Too tired to choose? Let us pick one.

  1. A 4-year-old points excitedly at a bird while walking past a fruit stand with a parent.

    First-sound I spy

    Moderate evidence
    Time
    5 minutes, in the car or at the table
    Builds
    Phonological awareness: hearing the first sound in a word
    1. Say, "I spy something that starts with /b/," making the sound, not saying the letter name.
    2. Let your child guess: "Ball! Banana!"
    3. Swap roles and let your child pick the sound.
    4. When that's easy, try ending sounds: "I spy something that ends with /t/."

    Make it work: Stop while it's still fun. The AAP says early learning should be fun, not forced (AAP).

    Evidence: Moderate. Phonological awareness was one of the strongest early predictors of reading in a federal review, and teaching built mostly on sound games had moderate to large effects (National Early Literacy Panel, 2008). Most of those studies were run by teachers with small groups, not by parents at home.

  2. Rhyme and clap

    Emerging evidence
    Time
    5 minutes, at bath time or on a walk
    Builds
    Rhyming, hearing the beats in words
    1. Ask, "Do cat and hat rhyme? Do cat and dog?"
    2. Make up silly rhymes for family names.
    3. Clap the beats in words: "Ba-na-na" gets three claps.

    Evidence: Emerging. Recognizing simple rhymes is a 5-year milestone (CDC), but in the national panel's review, most programs that worked had children pick out or blend small sounds in words, and few relied mainly on rhyming (National Early Literacy Panel, 2008). Treat rhymes as a warm-up.

  3. Name letter hunt

    Moderate evidence
    Time
    10 minutes, a few times a week
    Builds
    Letter knowledge, early writing
    1. Write your child's name in big letters and say each letter and its sound.
    2. Hunt for those letters on signs, cereal boxes, and book covers.
    3. Let your child trace or copy them with a crayon, chalk, or a finger in sand.

    Make it work: Neatness doesn't matter yet. Holding the crayon with fingers and thumb is the 4-year skill (CDC).

    Evidence: Moderate. Knowing letter names and sounds and writing one's own name were among the strongest early predictors of reading, even after accounting for IQ and family income, and adding letter teaching made sound games work better (National Early Literacy Panel, 2008). Writing some letters of their name is a 5-year milestone (CDC).

  4. Predict, then retell

    Moderate evidence
    Time
    15 to 20 minutes, most days
    Builds
    Vocabulary, story sense, listening
    1. Before turning a page, ask, "What do you think will happen next?"
    2. Ask one why question: "Why was the bear grumpy?"
    3. After the story, ask your child to tell it back to you or to a stuffed animal.
    4. Visit the library so your child can pick new books.

    Make it work: The AAP suggests 20 to 30 minutes of book sharing, with the TV off, as part of bedtime (AAP).

    Evidence: Moderate. Interactive "dialogic" reading built vocabulary more than reading straight through in a meta-analysis of 16 studies, though the boost was smaller for 4- and 5-year-olds (Mol et al., 2008), and the What Works Clearinghouse rates it positive for oral language (WWC). CDC suggests asking what's happening and what might happen next (CDC).

  5. Snack-time math talk

    Emerging evidence
    Time
    A few minutes at meals or while cooking
    Builds
    Counting, comparing, number words
    1. Count out crackers together, then ask, "If you eat 2, how many are left?"
    2. Compare: "Who has more grapes? How can we tell?"
    3. Let your child count scoops while you cook.

    Make it work: Keep it a conversation, not a quiz.

    Evidence: Emerging. In a study of 44 families, toddlers who heard more number talk at home knew more about number words at nearly 4, a link that doesn't prove cause (Levine et al., 2010). Short math stories at home raised math achievement in a randomized trial with 587 first graders (Berkowitz et al., 2015), an older age group.

  6. Number race board game

    Emerging evidence
    Time
    15 minutes, a few times a week
    Builds
    Number sense, counting on, taking turns
    1. Draw a straight track of 20 squares and number them, or use a numbered game you own.
    2. Take turns rolling a die and moving a token.
    3. Say each number as you move: "I'm on 7. Eight, nine!"
    4. Play by the rules and let your child win or lose; following game rules is a 5-year milestone (CDC).

    Evidence: Emerging. Low-income preschoolers (average age 5.4) who played a straight-line numbered board game for about an hour got better at counting, comparing, and recognizing numbers, with gains lasting 9 weeks; classmates who played the same game with colored squares didn't improve (Ramani & Siegler, 2008).

  7. Puzzle and block builds

    Emerging evidence
    Time
    15 to 30 minutes
    Builds
    Spatial thinking, persistence
    1. Choose a puzzle that's a little hard for your child, and work on it together.
    2. Use position words: "Turn it around. That piece goes on top."
    3. Build a block design and take turns copying each other's.

    Evidence: Emerging. In a study that observed 53 families at home, children who played with puzzles between 2 and 4 did better on a spatial reasoning task at 4½, even after accounting for income and parent education; it's an observational link (Levine et al., 2012).

  8. Two preschoolers sit on the floor stretching to touch their toes, grinning.

    Head, toes, knees, shoulders, switched

    Emerging evidence
    Time
    5 to 10 minutes
    Builds
    Self-control, listening, switching rules
    1. Call out a body part and have your child touch it.
    2. Switch the rule: "Now when I say head, touch your toes. When I say toes, touch your head."
    3. Add a second switch when that gets easy.

    Make it work: CDC suggests red light, green light, and freeze dance for the same stop-and-wait practice (CDC).

    Evidence: Emerging. In a randomized trial with 65 preschoolers, 16 sessions of circle-time games like this didn't improve self-regulation overall, but did help children who started with weaker skills (Tominey & McClelland, 2011). Practicing one self-control skill tends to improve that skill only (Kassai et al., 2019).

  9. Feelings detective

    Moderate evidence
    Time
    5 minutes during a story or show
    Builds
    Emotion words, empathy
    1. Pause on a picture: "How do you think she feels? How can you tell?"
    2. Name a cause: "He's frustrated because his tower fell."
    3. Ask, "What could he do to feel better?"

    Evidence: Moderate. In a randomized trial with parents of 216 4- and 5-year-olds, teaching parents to name and talk about emotions improved children's emotion understanding and reduced behavior problems (Havighurst et al., 2010). Across studies, understanding emotions goes with somewhat stronger social skills (Trentacosta & Fine, 2010).

  10. Honesty story time

    Emerging evidence
    Time
    5 minutes
    Builds
    Honesty, moral reasoning
    1. Read or tell a story where telling the truth turns out well.
    2. Ask, "How do you think his dad felt when he told the truth?"
    3. Share a time you told the truth when it was hard.

    Evidence: Emerging. In an experiment with 268 children ages 3 to 7, hearing "George Washington and the Cherry Tree," where honesty is praised, made children more likely to admit peeking; "Pinocchio" and "The Boy Who Cried Wolf," which focus on punishment, didn't help (Lee et al., 2014). The researchers say long-term effects need more study (APS).

  11. A 4-year-old carefully places forks on a stack of plates at the dinner table.

    Table setter

    Emerging evidence
    Time
    5 minutes before meals
    Builds
    Responsibility, counting, matching one to one
    1. Ask, "How many people are eating tonight? Let's count out that many forks."
    2. Put one plate, cup, fork, and napkin at each seat. Start with unbreakable dishes.
    3. After the meal, your child carries their own plate to the counter.

    Make it work: Praise the effort, not perfect placement (AAP).

    Evidence: Emerging. Kindergartners who did chores more often rated their social and academic skills higher in third grade in a study of 9,971 US children, a link that can't prove cause (White et al., 2019). Clearing the table after eating is a 5-year milestone (CDC).

  12. Two-dollar fruit choice

    Emerging evidence
    Time
    10 minutes during a grocery trip
    Builds
    Making choices, early money sense
    1. Hand your child two dollars.
    2. Look at two or three fruits and their prices together.
    3. Let your child choose, pay, and take the change.
    4. Name the trade-off: "We got apples, so no pears this time."

    Evidence: Emerging. CFPB suggests giving your child two dollars to choose which fruit to buy, and thinking out loud about why you pick one item over another (CFPB); the activity itself hasn't been studied.

  13. Save-for-it picture jar

    Emerging evidence
    Time
    A few minutes each week
    Builds
    Waiting, saving, planning
    1. Pick a small goal together and tape its picture to a clear jar.
    2. Draw a row of boxes, one for each coin or dollar needed.
    3. Color a box each time money goes in, then go buy it together.

    Evidence: Emerging. CFPB suggests labeling a jar for saving so your child can buy a toy or treat once they've saved enough (CFPB), and its research treats planning and waiting for things you want as foundations for later money skills (CFPB, 2016). It hasn't been tested with preschoolers.

  14. Body safety what-ifs

    Moderate evidence
    Time
    5 minutes now and then, like at bath time or before a new situation
    Builds
    Body autonomy, knowing whom to tell
    1. Ask a calm "what if": "What if someone asked to see your private parts?"
    2. Practice the answer together: "No! Then I tell a grown-up."
    3. Name trusted adults: "Who could you tell at preschool?"
    4. Remind them: "You'll never be in trouble for telling me."

    Evidence: Moderate. A Cochrane review of 24 trials found that school-based programs improved children's knowledge and protective behaviors without raising anxiety, though the trials didn't measure whether abuse was actually prevented (Walsh et al., 2015). The AAP recommends teaching body safety as soon as children can talk (AAP).

Common questions

What should a 4-year-old be able to do?

Most 4-year-olds speak in sentences of four or more words, pretend during play, comfort friends who are upset, name a few colors, draw a person with three or more body parts, and catch a large ball most of the time (CDC). These are skills at least 75% of children have by 4 (Zubler et al., 2022). If your child is missing one, has lost skills, or something worries you, talk with your pediatrician. You can also ask your local public school district for a free evaluation; you don't need a referral (CDC).

Should my 4-year-old know the alphabet or be reading?

No, most 4-year-olds aren't reading yet, and there's no need to push. The AAP says a few want to learn and recognize some familiar words, but some early readers lose their head start by second or third grade (AAP). By 5, most children name some letters when you point to them and write some letters of their name (CDC). Short games with sounds and letters, like first-sound I spy, build the skills that best predict reading (National Early Literacy Panel, 2008).

Should I hold my child back from kindergarten for a year?

There's no single right answer, and the research on delaying kindergarten is mixed. Some studies find older starters have fewer attention problems (Dee & Sievertsen, 2018) or higher test scores (Jenkins & Fortner, 2024). The AAP notes that most academic gaps for the youngest children fade by third or fourth grade, and some research links being old for one's grade with more behavior problems in the teen years (AAP). Look at the whole child: can they focus for 10 to 15 minutes, follow instructions, and say what they need? Ask their preschool teacher and pediatrician, and trust what you know about your child (AAP).

Why is my 4-year-old lying, and what should I do?

Lying is common at this age and shows your child's thinking skills are growing. In experiments, most children who peek at a forbidden toy then deny it, and that ability builds on understanding what others know (Talwar & Lee, 2008). Children under 6 also blur fantasy and reality, so tall tales aren't the same as deceit (AAP). Stay calm, say you know what happened, and make telling the truth worth it. Harsh punishment tends to produce more, and better-hidden, lies (Talwar & Lee, 2011), while saying you'd be happy to hear the truth increases honesty (Talwar et al., 2015). Model honesty yourself, including skipping the convenient white lies (AAP).

How much sleep does a 4-year-old need, and is it OK to drop the nap?

Most 4-year-olds need 10 to 13 hours of sleep in 24 hours, including any nap (CDC; WHO). Dropping the nap is normal: the preschool years are when most children stop, and 94% have stopped by 5 (Staton et al., 2020). On no-nap days, offer quiet rest time and move bedtime earlier; even 15 to 20 minutes can help (AAP). Tell your pediatrician about snoring, loud or heavy breathing during sleep, or trouble paying attention during the day (AAP).

How much screen time is OK for a 4-year-old?

WHO says no more than 1 hour a day at this age, and less is better (WHO); CDC suggests limiting shows to about 1 hour a day, with an adult present (CDC). The AAP's 2026 policy moves beyond time limits alone and puts more weight on what and how: quality content, watching together, a shared family device, and screen-free meals and bedrooms (Munzer, AAP). Research backs that up: educational programs and co-viewing go with stronger language skills, while heavy use and background TV go with weaker ones (Madigan et al., 2020). Nonprofits like PBS Kids and Sesame Workshop have the strongest evidence of benefit (AAP).

When can my 4-year-old switch to a booster seat?

Most 4-year-olds aren't ready for a booster; keep your child in a car seat with a 5-point harness as long as possible (AAP). Your child has outgrown a harnessed seat when they reach its top weight or height limit, their shoulders are above the top harness slots, or the tops of their ears reach the top of the seat. Many combination seats harness children up to 40 to 65 pounds. After that, use a belt-positioning booster until the seat belt fits properly, typically at 4 feet 9 inches and 8 to 12 years old. A booster must be used with a lap and shoulder belt, never a lap belt alone, and every child under 13 rides in the back (AAP).

Are swim lessons worth it for a 4-year-old?

Yes, the AAP says most children are ready for swim lessons by their fourth birthday and calls them a must for most families at this age (AAP). In a case-control study, children ages 1 to 4 who had taken formal swim lessons had an 88% lower risk of drowning, though the estimate was imprecise (Brenner et al., 2009). Lessons don't make kids drown-proof. Look for programs that teach water survival skills, like getting back to the surface, swimming 25 yards, and getting out of the water, and keep supervising closely (AAP).

Should I give my 4-year-old an allowance or pay them for chores?

You don't need to, and at 4 it usually works better to keep chores as unpaid family jobs. CFPB says children this age are usually too young for abstract money ideas (CFPB), and research on paying kids for chores is limited and mixed; in one lab study, toddlers given material rewards for helping later helped less (Warneken & Tomasello, 2008). Practice with small amounts instead, like a save-for-it picture jar. For older ages, see chores by age and how to stop nagging about chores.

Is it normal for a 4-year-old to wet the bed?

Yes, bedwetting is common at 4, and many children can't stay dry at night until they're older (AAP). About 15% of 5- and 7-year-olds still wet the bed. Don't blame or punish, protect the mattress, and set a no-teasing rule for siblings. Call your pediatrician if a child who has been dry for 6 months or more suddenly starts wetting, or has pain or burning when peeing, cloudy or pink urine, or daytime wetting too (AAP).

What vaccines does my child need at 4?

The AAP recommends booster shots between ages 4 and 6: a fifth dose of DTaP, a fourth dose of polio vaccine, and second doses of MMR and chickenpox vaccines (AAP). It also recommends a flu vaccine every year, and COVID vaccine for children 2 and older with risk factors, while keeping it available for any child whose parent wants it (AAP). US guidance has been in flux. The AAP's 2026 schedule differs from the CDC's (AAP). In March 2026, a federal judge paused the CDC's January 2026 schedule changes (KFF, 2026), and the government has appealed (STAT, 2026). Ask your pediatrician which schedule they follow.

How do I teach my 4-year-old body safety without scaring them?

Keep it calm and matter-of-fact: teach the real names for body parts, which parts are private, and that they should always tell you if anyone touches them in a way that feels wrong (AAP). Repeat it at natural moments like bath time and doctor visits. In trials of school-based programs, children learned the material without becoming more anxious or fearful (Walsh et al., 2015). Remind your child you'll believe them and they won't be in trouble for telling (AAP).

Safety and when to get help

Drowning is the leading cause of death for US children ages 1 to 4 (AAP), and firearms are the leading cause of death for US children and teens under 18 (AAP). Your 4-year-old still needs close supervision.

Car seats: harness first, booster later

Keep a forward-facing seat with a harness up to its top weight or height limit, at least to age 4, and always use the top tether (AAP). For when to switch, see the booster question above.

Water and swim lessons

The AAP's 2026 drowning policy calls for layers of protection: an adult who can swim within arm's reach of young children and weak swimmers in or near water, Coast Guard-approved life jackets for young children near water and on boats, swim lessons, and CPR training for caregivers (AAP). Fence pools on all 4 sides, skip floaties (they don't prevent drowning), and don't let children bathe alone until at least 6 (AAP). In 69% of drownings of children under 5, the child wasn't expected to be in the water, so block access to pools when it isn't swim time, and teach your child to always ask before going near water (AAP).

Guns at home and at playdates

The safest home for a child is one without guns. If you keep one, store it locked and unloaded, with ammunition locked separately, and keep keys and combinations away from children. More than 1 in 3 unintentional shootings by US children from 2015 to 2024 involved preschoolers age 5 or younger. Before playdates, ask, "Is there an unlocked gun in your house?" Teach your child to stay away from any gun they find and tell you (AAP), but don't count on the lesson (see the research).

Medicines, melatonin, and other poisons

Store medicines, vitamins, and supplements, including melatonin, in a safe place away from children. Poison centers got more than 260,000 reports of children swallowing melatonin from 2012 to 2021, and two children died (AAP). If your child swallows something that might be harmful, including a coin battery, magnet, or vape liquid, call Poison Help at 1-800-222-1222 right away, even with no symptoms (AAP). It's free and confidential (Poison Control).

Streets, bikes, and playgrounds

Four-year-olds aren't ready to cross a street alone and need watching during outdoor play (AAP). For bikes, use a helmet that meets the US Consumer Product Safety Commission standard, sits level over the forehead, and has a snug chin strap. Replace it after a serious crash (AAP).

Call 911 if your child

The AAP says to call 911 right away if your child (AAP):

  • Can't breathe
  • Has a seizure
  • Loses consciousness
  • Has a severe injury, like a broken bone, crushed limb, or deep wound
  • Is bleeding and you can't stop it
  • Has a serious burn
  • Has a serious allergic reaction
  • Is choking on something you can't get loose
  • Is found unresponsive after being underwater
  • Swallowed something poisonous and collapses, has a seizure, has trouble breathing, or can't be woken (Poison Control)

If you're not sure what's wrong but believe your child is in danger, call 911 (AAP).

Call your pediatrician if

  • Development worries you, or your child has lost skills (CDC). The AAP's watch list includes extreme fear or aggression, not focusing on any activity for more than 5 minutes, little interest in other children, and not giving their first and last name (AAP).
  • Stuttering has lasted more than 6 months (AAP).
  • Sleep: snoring or loud breathing (AAP), or night terrors that keep happening (AAP).
  • Sexual behavior that can't be redirected, involves force, causes pain or distress, or imitates adult sex acts (AAP).
  • Toileting: new wetting after 6 dry months, or pain or burning when peeing (AAP).

Getting a free evaluation

After 3, call any local public elementary school and say, "I have concerns about my child's development and I would like to have my child evaluated through the school system for preschool special education services." No referral or diagnosis is needed (CDC).

The 4-year checkup

Expect a full exam, hearing, vision (likely with an eye chart), and oral health screening, a look at motor skills and speech, and questions about school readiness, media, firearms, and water safety (AAP). Hearing, vision, and blood pressure checks are routine at 4 (AAP, 2025; AAP); USPSTF recommends vision screening at least once between 3 and 5 for amblyopia ("lazy eye") (USPSTF, 2017). Fluoride varnish continues 2 to 4 times a year until 5 (AAP). For shots, see the vaccine question. Bring your questions in writing.

Sources

This guide is general education that summarizes published research and guidance from groups like the American Academy of Pediatrics, the CDC, and the WHO. It isn’t medical advice, and every child develops on their own timeline. Your pediatrician knows your child; if something feels wrong, call them. In an emergency, call 911.

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