A bathroom scale cannot detect the difference in weights between Jorge and Carlos, because the two men only differ by 1 kilogram. As a measure of weight, the scale is limited in terms of its:
A) reliability.
B) validity.
C) consistency.
D) power.
D) power.
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Lottery winners are very happy at first, but their happiness declines a few months later. Which of the following is NOT a likely explanation for the decline?
a. Their answer on a rating scale may not mean the same thing it did before. b. People almost always want still more wealth than they have c. Rich people get less joy from the simple things in life. d. Happiness declines steadily as people get older.
Research on the genetic heritability of extraversion-introversion has made use of
A. brain electrical activity measures. B. the twin-study method. C. differences in sensitivity to stimulation. D. only twins that have been reared together (in the same environment).
Procedural memory is likely to reside in the:
A) visual cortex B) hypothalamus C) auditory cortex D) hippocampus E) cerebellum
Regarding the experiments using intracranial self-stimulation, which of the following statements is FALSE?
a. When rats self-administer nicotine, they are even more likely to engage in intracranial self-stimulation because nicotine further increases the sensitivity of the pleasure pathways. b. After the rats had pressed the intracranial self-stimulation lever to exhaustion, they were less likely to press the lever again once they were revived. c. Intracranial self-stimulation involves electrical stimulation of the limbic system of the brain. d. Intracranial self-stimulation is considered to be a primary reinforcer.