The split-half method can be used to assess a test's
a. predictive validity
b. construct validity
c. reliability
d. all of these, depending on what statistical tests are used
c
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Stress may weaken the immune system in part by increasing
a. the number of lymphocytes in the bloodstream. b. blood pressure. c. unhealthy behaviors. d. physical exertion and rest.
Which of the following would most likely help someone adjust to jet lag?
a. taking a nap during the day b. taking melatonin when you need to wake up c. keeping the room light when you need to stay awake d. darkening the room when you need to stay awake
Motor-sensory cortex areas comprise about ____ of the cortex, and association cortex areas comprise about ____ of the cortex
a. ?75%; 25% b. ?25%; 75% c. ?40%; 60% d. ?60%; 40%
Overall, most studies suggest that the heritability of intelligence is
a. about 10%. c. between 40% and 60%. b. between 15% and 25%. d. virtually 100%.