Which of the following research findings would lend support for a biological cause of autism?
A) Discovering that parents of autistic children are deficient in their parenting
B) Finding that peer rejection is correlated with autistic behaviors in children
C) Discovering that the concordance rates for ASDs are about 60% among identical twins
D) Finding that poor nutrition is related to ASDs

Question

Quizplus · Accepted Answer

Discovering high concordance rates for Autism Spectrum Disorders (ASDs) among identical twins suggests a genetic or biological component to the condition. Identical twins share nearly all of their DNA, so a high concordance rate (much higher than in fraternal twins or non-twin siblings) indicates that genetics play a significant role in the disorder.

Which of the Following Research Findings Would Lend Support for a Biological