Which of the following is consistent with the research findings that used Baltes' model to assess wisdom?
a. wisdom is negatively correlated with educational levels
b. people who hold leadership positions are more likely to score lower in wisdom
c. wisdom is generally unrelated to age
d. wisdom correlates strongly with brain size
Answer: C
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If a researcher conducts an experiment in which the independent variable is poorly defined (i.e., has a poor operational definition), then the experiment can be said to have ____
a. low internal validity b. low external validity c. low construct validity of the cause d. low construct validity of the effect
Classical psychophysicists placed a great deal of emphasis on determining the absolute threshold for a particular type of sensory stimulation. This proved to be difficult because
a. the point at which an observer detects a stimulus varies from trial to trial. b. adequate technical equipment for measuring intensity was not available until recently. c. subjects must be carefully trained to make these judgments accurately. d. researchers used samples too small to give reliable results.