The average IQ gap between severely malnourished children and well-nourished children can be as high as

What is one reason that the prevalence of dissociative identity disorder (DID) has been increasing?

A. Children in today's society are far more likely to experience severe trauma than they were in the past. B. DID has only recently received full acceptance by the psychiatric community, and thus professionals are now using this diagnosis. C. As of 1980, most insurance companies had to accept DID as a billable diagnosis. D. It may be that the prevalence of DID has not changed at all, but that clinicians may unknowingly encourage the emergence of new identities.

The experiment on mental rotation is evidence for the idea that

(a) working memory might use images (b) working memory relies on acoustic storage (c) Bayes' theorem (d) the idea that people do not know the causes of their own behavior (e) the idea that behavior influences beliefs