Humans can produce a much wider range of sounds than other primates because the larynx is located lower in the throat. As a result, humans have a large sound-chamber knows as the ____

Research focusing on a substance called corticotrophin-releasing factor (CRF) reveals which of the following in relation to the development of anxiety disorders?

a) When chemical substances such as adrenocorticotropic hormone (ACTH) and beta-endorphins are injected into the brains of mice, the animals behave in ways that do not suggest the presence of depression and anxiety. b) CRF neurons are present in areas of the brain that regulate fear. c) Animals placed in stressful situations respond with diminished CRF activity in the thalamus and corpus callosum. d) Heightened and persistent CRF activity in the hypothalamus and the amygdala suggest that early life experiences such as loss, separation, or abuse may change brain activity, making that person more vulnerable to developing emotional disorders.

One reason that women are more likely to graduate from college is that __________

a) males are more likely to spend large amounts of time partying. b) males use more effective study strategies. c) females are more likely to be negatively influenced by peers. d) females are more strongly motivated by increased future earnings.