The optimal item difficulty of a six-alternative test is

Aaron Beck developed what is considered the finest psychometric instrument for use in assessing

a) conversion disorders. b) depression. c) obsessive-compulsive disorders. d) schizophrenia.

One brain area that seems to differ between transsexuals and all other individuals is the

a. central bed of the stria terminalis b. medial amygdala c. hippocampus d. ventromedial hypothalamus