___________ is when a baby is wrapped tightly in clothes or a blanket so that his arms and legs cannot move, in order to soothe him

Videotaping mother–infant interactions in the home and analyzing the frequency of vocalizations directed by the infant to the mother are examples of a(n) _____________ observation, whereas asking mothers to show their infants a picture book and recording the number of infant vocalizations would be an example of a(n) ____________

a. valid; norm b. naturalistic; structured observation c. reliable; standardized test d. ethnographic; structured observation

A humanist would give which explanation for aggression?

a. Brain abnormalities explain violent behavior in some people. b. Social conditions give rise to drug use that, in turn, causes aggressive behavior. c. Aggression results from unconscious impulses. d. Aggression increases when people become frustrated by not being able to meet their goals. e. Aggression is learned through observing others and through reinforcement.