A psychologist attributes a boy's poor social skills to his lack of contact with children who model appropriate behavior. The psychologist is using which approach to personality?

Rapid eye movements during sleep

A) are a sign of central nervous system damage. B) help protect the health of the eye. C) are associated with a dreamless sleep. D) cause the vitreous to remain motionless.

In a dominance hierarchy, when rank __________, then serotonin levels __________

a. Increases, increase. b. Increases, decrease. c. Decreases, increase. d. There is no relationship.