Social Delays in Children: Signs, Causes and What to Do

What social delays look like

Social development is how a child learns to connect with others: looking at faces, smiling back, taking turns in "conversations" with sounds, sharing attention with you on an object, playing, and later making friends and understanding feelings. A delay means these skills are emerging later than usual, are limited, or are unevenly developed.

Signs at different ages include:

• Babies: rarely looking at faces, few smiles, little interest in peekaboo, not reaching to be picked up
• Toddlers: not responding to their name, not pointing or bringing things to show you, not looking where you point, playing alone with objects in repetitive ways, little copying of others
• Preschoolers: difficulty taking turns, joining in play or understanding others' feelings, preferring adults to children, unusual or one-sided conversations
• School age: trouble making or keeping friends, missing social cues, very literal understanding, being isolated or bullied

Social milestones by age

These are skills most children (about 75 percent or more) show by each age, based on CDC milestone checklists. Missing one is a reason to talk to your pediatrician, not a diagnosis.

Causes of social delays

Autism spectrum disorder

Autism is the condition most often behind persistent social delays. It involves differences in social communication (eye contact, shared attention, gestures, back-and-forth interaction) together with restricted or repetitive behaviors and interests, such as lining up toys, intense interests, repeated movements or strong sensory reactions. Signs are often visible by 18 to 24 months.

Hearing loss

A child who cannot hear well may not respond to their name or join in conversation, which can look like a social delay. A formal hearing test is part of every evaluation, even if a newborn screen was normal.

Language disorders

A developmental language disorder or social (pragmatic) communication disorder makes interaction harder, though children often still seek out others and use gestures. See delayed speech.

Global developmental delay and intellectual disability

When social skills are delayed along with movement, language and thinking skills, the cause may be global developmental delay. Genetic conditions such as fragile X syndrome and Down syndrome are among the causes.

Emotional and environmental factors

• Anxiety and selective mutism: a child may talk and play freely at home but freeze or stay silent at school.
• ADHD: impulsivity and difficulty waiting can make friendships hard.
• Limited social opportunity: children with little contact with other children, such as during long illness or isolation, may simply need more experience.
• Neglect, trauma and attachment problems: severe early neglect can disrupt social development.
• Premature birth: raises the chance of developmental and social delays.

Social delay vs autism

Only a full assessment can tell these apart, and some children have more than one condition.

How social delays are evaluated

• Developmental surveillance at every well-child visit, with checklists of milestones.
• Autism screening with a questionnaire such as the M-CHAT-R/F, recommended by the American Academy of Pediatrics at 18 and 24 months.
• Hearing and vision tests.
• Referral for a full evaluation by a developmental pediatrician, child psychologist, speech-language pathologist or multidisciplinary team, using observation, structured play and parent interviews.
• Genetic testing (chromosomal microarray and fragile X testing) when autism or global delay is diagnosed.

In the US, children under 3 can be referred to the state's Early Intervention program without a diagnosis. Children 3 and older can be evaluated through the local public school district. You can contact these services yourself.

What helps

• Early intervention: therapy at home or in childcare, focused on communication, play and daily routines.
• Speech and language therapy: builds both language and social communication.
• Parent-mediated programs: coaching parents to use everyday play to build shared attention and interaction.
• Behavioral and developmental therapies for autism, such as naturalistic developmental behavioral interventions.
• Social skills groups for older children.
• Treatment of anxiety or ADHD when present.

Things you can do at home

• Get face to face at your child's level during play.
• Follow their lead: join in what they are interested in, then add a small step.
• Narrate, wait, and give them time to respond.
• Play turn-taking games such as rolling a ball, peekaboo and simple songs with actions.
• Limit background screen time and prefer shared reading and play.
• Arrange regular, short play times with one other child.

Frequently asked questions

What are signs of social delay in toddlers?

Signs include not responding to their name, rarely making eye contact, not pointing to show you things, not looking where you point, little interest in other children, not copying actions, and no pretend play by about age 2. Losing skills a child once had is always a reason to see a doctor promptly.

Does a social delay mean my child has autism?

Not necessarily. Social delays can come from hearing loss, language disorders, global developmental delay, anxiety, limited opportunity to mix with other children, or prematurity. Autism is one important cause. A developmental evaluation is the only way to tell, and early support helps whatever the cause.

Can a child catch up on social delays?

Many children do, especially when the delay comes from limited exposure, hearing loss that is treated, or a language disorder. Children with autism also make real gains with early intervention, though some differences usually remain. Starting support early, ideally before age 3, gives the best results.

Who do I talk to about my child's social development?

Start with your child's pediatrician or family doctor, who can screen development and refer you. In the US, you can also contact your state's Early Intervention program directly for children under 3, or your local school district for children aged 3 and older. You do not need a diagnosis first.