Baby Not Imitating Actions or Gestures
The short answer
Imitation is one of the most important developmental skills because it is the foundation for learning language, social skills, and play. Babies typically begin imitating simple actions (sticking out tongue) in the first weeks, progress to imitating sounds and gestures (waving, clapping) by 9-12 months, and imitate complex actions and words by 12-18 months. If your baby is not imitating any actions or gestures by 12 months, or not imitating words by 18 months, a developmental screening is recommended.
By Age
What to expect by age
Very young babies can imitate simple facial expressions like sticking out the tongue or opening the mouth wide. By 3-4 months, they begin to imitate sounds (cooing back when you coo). By 6 months, your baby may imitate some mouth movements and vowel sounds. At this age, imitation requires face-to-face interaction and your baby being in an alert, calm state. If your baby makes eye contact and responds to your face even without clear imitation, social development is progressing.
Imitation of actions begins - your baby may start to copy banging objects, clapping (often imprecise at first), or making specific sounds. They are watching you carefully and trying to reproduce what they see. Model simple actions repeatedly and celebrate any attempts. At this stage, imitation may be delayed (they try to do it hours or days later) rather than immediate. Babies learn through repetition, so demonstrate the same actions many times.
This is a critical period for gestural imitation. By 12 months, most babies can wave bye-bye, clap on request, play peek-a-boo, and copy simple actions like putting a phone to the ear. If your baby is not imitating any gestures by 12 months, discuss this with your pediatrician. Absence of imitation at this age can be an early sign of autism spectrum disorder, hearing loss, or other developmental differences. However, some babies are late imitators and catch up quickly.
Imitation expands to include words (repeating words you say), complex actions (pretending to cook after watching you), and social behaviors (blowing kisses, high-fives). By 18 months, your toddler should be imitating at least some words and many actions. If your toddler at 18 months does not imitate words, does not copy everyday actions, and does not engage in any pretend play by 24 months, a developmental evaluation is recommended. Imitation is a key skill assessed in autism screening.
What Should You Do?
When to take action
- Your baby imitates some things but not others - they have preferences for what they copy
- Your baby attempts to imitate but does it imperfectly (clapping by slapping hands on legs instead of together)
- Imitation is better in calm, one-on-one settings than in noisy or busy environments
- Your baby imitates familiar people more readily than strangers
- Your baby does not wave, clap, or imitate any gestures by 12 months
- Your toddler does not imitate any words by 18 months
- Your child does not copy everyday actions (talking on phone, brushing hair, feeding doll) by 18-24 months
- Your child used to imitate but has stopped
- Your baby has lost imitation skills they previously had - this regression needs immediate evaluation
- Your baby over 12 months shows no interest in what other people are doing and does not observe or copy any actions
- Lack of imitation combined with no pointing, no eye contact, and no response to name
Sources
Related Resources
Related Behavior Concerns
Early Signs of Autism in Babies and Toddlers
Autism spectrum disorder (ASD) can sometimes be identified as early as 12-18 months, though most children are not diagnosed until age 2-3. Early signs include limited eye contact, not responding to their name, lack of pointing or showing, limited social smiling, and absence of pretend play. Having one or two of these signs does not mean your child has autism - many typically developing children share individual traits. However, a pattern of multiple social communication differences warrants evaluation. Early intervention, regardless of eventual diagnosis, consistently leads to the best outcomes.
Baby Not Interested in People - Poor Social Engagement
Babies are born social - from the first days of life, they prefer to look at faces over objects, respond to voices, and seek human connection. A baby who consistently prefers objects over people, does not look at faces, does not respond to their name by 12 months, and does not follow pointing or show things to others by 12-18 months may need a developmental evaluation. These social engagement skills are among the most important early developmental milestones and their absence is one of the earliest signs of autism spectrum disorder.
Baby Flat Affect - Limited Facial Expressions or Emotions
Babies should show a range of facial expressions from early infancy. A social smile (smiling in response to a face or voice) typically appears by 6-8 weeks. By 3-4 months, most babies are expressive - smiling, laughing, frowning, and showing surprise. A baby who consistently shows limited facial expressions, rarely smiles, and does not seem to react emotionally to their environment should be evaluated. While some babies are naturally more serious or observant, persistent flat affect can be an early sign of developmental differences, sensory issues, or, rarely, medical conditions.
My Toddler Is Aggressive Toward Pets
Toddlers being rough with pets is extremely common and almost never reflects true aggression or cruelty. Young children lack the motor control to be consistently gentle and do not yet understand that animals feel pain the way they do. With patient, consistent teaching about gentle touch and close supervision, most toddlers learn to interact safely with pets by age 3-4.
My Baby Doesn't Seem Attached to Anyone
By 7-9 months, most babies show clear preferences for their primary caregivers and some wariness of unfamiliar people. If your baby seems equally comfortable with everyone and shows no distress when separated from caregivers, it may simply reflect an easy-going temperament. However, if combined with other social differences, it can occasionally warrant further discussion with your pediatrician.
My Baby Arches Their Back
Back arching is very common in babies and usually a normal way of expressing frustration, discomfort, or just stretching and moving. Most babies arch their backs when upset, tired, or trying to see something. However, persistent arching with crying, especially during feeding, can be a sign of reflux or discomfort that should be discussed with your pediatrician.