For men, __________ after age 40
A) quantity of sperm increases
B) motility of sperm increases
C) quantity of semen diminishes
D) fertility does not diminish
C
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Which of the following statements regarding HIV infection is FALSE?
A) Babies can be infected with HIV if an HIV-infected mother breastfeeds. B) Drug abuse is in some way implicated in the majority of babies with HIV. C) Babies born with HIV usually contract the virus during the embryonic stage. D) Medications are able to reduce HIV transmission from mothers to infants.
Because all your friends are concerned about your feeling depressed lately, you decide to walk around all day with a smile on your face trying to look happy. By the end of the day, you actually begin to feel happier. The theory of emotion that best explains this phenomenon is ____.?
a. ?James's peripheral theory. b. ?Cannon's central theory. c. ?the arousal theory d. ?the Schachter-Singer theory