In the past, demographers portrayed the United States population in the shape of a demographic ______

The level of sexual activity in male rats is related to the size of their ___, which itself is a function of ___

a. MPOA; prenatal exposure to stress hormones b. ventromedial hypothalamus; prenatal exposure to testosterone c. SDN; prenatal exposure to estrogen d. SDN; prenatal exposure to testosterone

Sandra has experienced a great deal of misfortune during

the last ten years, while Teresa has experienced an abundance of wonderful life events during the same ten years. However, Sandra appears to be a much happier person than Teresa. Which of the following is the best explanation for these two women's emotional states? a. Although Teresa does not appear to be extremely happy on the outside, she must really be very happy since it is one's life events that determine subjective well­being. b. Sandra is in denial regarding her "sad" situation and will suffer depression and poor health in the future. c. Sandra must be good at negotiating and managing these unhappy events in her life. d. Teresa most likely has a mental illness that is preventing her from experiencing happiness.