Which possible biological cause of autism spectrum disorders has been most controversial?

Question

Quizplus · Accepted Answer

The dysfunction in the mirror neuron system has been the most controversial possible biological cause of autism spectrum disorders. Some studies have shown that individuals with autism have difficulties with this system, but other research has been unable to replicate these findings or has found other explanations for the differences observed.

Which Possible Biological Cause of Autism Spectrum Disorders Has Been