Which individual has the highest risk for developing anorexia nervosa?

Ten-year-old Wilson experiences extreme mood swings that do not seem to be influenced by life circumstances. At times he has told his parents that his teachers are idiots and he is smarter than all of them, and at other times he has so little energy he cannot get out of bed. Wilson may be diagnosed with _____.

A. autism spectrum disorder B. learning disability C. childhood schizophrenia D. attention-deficit hyperactivity disorder

Research has shown that expert skills are based on

a. learned heuristics and systematic information. b. rote memory and random search strategies. c. algorithms and insight. d. a general strengthening of the mind and exceptional memories.