Psychology
Theory of Mind Development in Children with Autism
Quick fact
In the classic 'Sally-Anne' test, most 4-year-olds correctly predict that Sally will look where she left the marble, but many children with autism, even older ones, fail this task.
Why this is interesting
You expect a toddler to understand that a person who hasn't seen the cookies moved still thinks they're in the jar. But what if they just can't get that idea?