Data show that there is great similarity of male/female differences in sexual behavior
across cultures. These data are used to support
(a) the need for correlational research
(b) the idea that environmental pressures in the real world are more powerful
than those in the laboratory
(c) sociobiology
(d) the need for experimental research
C
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Dr. Esterson is studying the effect of caffeine on laboratory rats. He has decided that he will give the rats 100 milligrams of caffeine three times a day, and then run them through mazes at various points to see if
there is any change in the time it takes to complete the maze. Based on his review of existing research addressing this topic, Dr. Esterson believes that the rats will complete the maze the fastest immediately after they ingest the caffeine. Dr. Esterson's belief about the results he will find is called a(n): a. covariate. b. construct. c. theory. d. hypothesis.
Repeating an item more often improves long-term recall
a. True b. False