In mammals, substantial adult neurogenesis occurs only in the __________ and hippocampuses

Newborn reflexes

a. are uncommon. c. are involuntary motor responses to stimuli. b. are learned. d. do not have any major significance.

Violent delinquent behavior among adolescents usually develops slowly as they move from minor aggression, such as bullying, in early adolescence to physical fighting and gang fighting to rape and muggings in late adolescence. This escalation is best explained by which theory?

a. instinctual theory b. frustration-aggression hypothesis c. social learning theory d. biological theory