Can my son or daughter take part?

How old is your son or daughter?

Has he or she been diagnosed with autism spectrum disorder (ASD)?

Is your son or daughter "high-functioning" (for this study, that means an IQ of at least 70)?

Is your son or daughter obese?

Is there a known family history (first-or-second-degree relatives) of cerebral aneurysms (bulges in a blood vessel in the brain)?