Males only produce androgens, while females only produce estrogens

Which of the following types of psychoactive drugs increase activity of the nervous system, resulting in heightened alertness, arousal, and euphoria?

a. hallucinogens c. stimulants b. opiates d. marijuana

________ to value competence within group-based domains, emphasize an obligation or responsibility to become competent, and define competence in terms of skill improvement

a. Western cultures are more likely than Eastern cultures b. Eastern cultures are more likely than Western cultures c. Urban cultures are more likely than rural cultures d. Rural cultures are more likely than urban cultures