In a sample with M = 40 and s = 8, what is the z-score corresponding to X = 38?

Stimulant medications work by ____

a. paradoxically slowing kids down b. altering neurotransmitter activity in the frontostriatal region of the brain (stimulating areas that are underaroused) c. enhancing mood, which in turn enhances self-esteem and behavioral control d. "convincing" parents and teachers that the medications are working, even when they're not (placebo effect)

If a person believes that his or her mind is being controlled by outside forces or that he or she is getting special coded messages from the television, this person is experiencing which type of psychotic symptom?

a. insanity b. delusions c. neuroses d. hallucinations