The human brain evolved to be larger than other animals' brains because it allowed humans to ____
a. evolve from a sustenance way of life to an agrarian way of life
b. domesticate and control other species that posed significant threats
c. have rich and complex interpersonal relationships
d. learn how to plant, harvest, and store food
C
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Sharon is a longdistance runner. After a certain point in her workout, she begins to feel a natural "high" instead of pain. This feeling is likely the result of chemicals in her brain called
a. stimulants. b. enzymes. c. endorphins. d. adrenalines. e. hormones.
Kim is a daycare worker. She recently decided that the children would no longer be allowed to watch Batman on TV because so many kids were getting into fights on the playground after watching this cartoon. What best explains why watching Batman would influence the children to fight on the playground?
a. ?habituation b. ?classical conditioning c. ?operant conditioning d. ?social learning
Which of the following kills Americans more than contagious diseases?
a. Lifestyle b. AIDS c. Accidents d. War
Research suggests that veterans experience significantly higher rates of PTSD than the general population. For example, a study conducted from 1986 to 1988 found that _________ of male veterans and ____________ of female veterans reported experiencing PTSD in their lifetime.
A. 26.9%; 30.9% B. 30.9%; 26.9% C. 15.2%; 8.2% D. 8.2%; 15.2%