Between 1 and 2 years of age, baby sibs who go on to develop autism have more trouble with focus and with controlling their emotions, the study found. They are also less likely to smile, cuddle or laugh and more likely to seem sad or shy than typical children.

Do babies with autism like being held?

Sometimes, autistic children may even not like to be held, hugged, or touched by anyone and may be fussy or reactive when forced to do so.

Can autistic babies be happy?

Some children with autism smile to show they're happy but don't share their enjoyment. Others show little facial expression or have flat affect and rarely smile so you may not know when they're happy.