What paraphilia is relatively common, and involves urges or fantasies about exposing one's genitals to strangers in order to cause shock in the observer

Grace has just been diagnosed with Alzheimer's disease. Grace has a major type of a general category of problem known as:

A) Asperger's syndrome. B) low intelligence test score. C) dementia. D) macular degeneration.

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