What has research shown concerning the tendency for autistic disorder to run in families?

Question

Quizplus · Accepted Answer

Research has shown that families with an autistic child have an elevated risk of having another child with autistic disorder. This suggests that there is a genetic component to the disorder. While environmental factors may play a role, the tendency for autism to run in families cannot solely be attributed to them. Option A is incorrect as research has shown that autistic disorder does have a genetic component. Option B is only partly correct; while environmental toxins may be a contributor to autism, they are not the sole cause. Option D is incorrect as there is not a direct link between high rates of schizophrenia in a family and an increased risk of having children with autism.

What Has Research Shown Concerning the Tendency for Autistic Disorder