Which of the following is TRUE regarding visual changes in midlife?
a. An operation can be performed to correct problems with distance vision.
b. Vision changes are minor and very few middle adults require glasses.
c. The number of rods and cones stays the same, but they function less effectively.
d. The lens of the eye gets smaller and more transparent.
Answer: A
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Scientists believe that narcolepsy is caused by
a. an overactive thyroid gland. b. loss of brain cells in the hypothalamus. c. an underactive thyroid gland. d. loss of brain cells in the reticular system. e. substance abuse.
The main influence of evolutionary theory upon psychology came through:
a. radical behaviorism b. sociobiology c. cognitive science d. research on instinctual drift
Which test maps changes in blood flow or oxygen use in the brain as a patient thinks or behaves?
a. an electroencephalogram (EEG) b. magnetic resonance imaging (MRI) c. a computerized tomography scan (CT scan) d. positron emission tomography (PET)
A ______ is more likely with a nonparametric tests than with parametric tests.
A. Type I error B. bias error C. ad hoc error D. Type II error