__________ is an amino acid that can help people sleep and can be found in a glass of __________.

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

A stroke damaged a portion of Broca's area in Joelle's brain. Joelle will probably experience deficits in:

a) object recognition b) speech production c) language comprehension d) face recognition