Schizophrenia is associated with "negative symptoms" that include all of the following EXCEPT

a. an inability to initiate and persist in activities.
b. flat affect

A Canadian study found that ___ of adolescents reported arguments between parents and teens at least once a week

a. 20% b. 30% c. 40% d. 50%

According to rodent studies, testosterone exerts a major part of its effect on ____

a. alpha-fetoprotein b. the sex region Y gene c. the thalamus d. the hypothalamus