The APA ethics code provides guidance to psychologists on
a. Teaching activities
b. Research activities
c. Therapeutic activities
d. All of the above
d
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In scientific investigations, researchers must clearly define the variables under study by precisely describing how they will be measured or controlled. These definitions are referred to as
a. objective definitions. b. precise definitions. c. operational definitions. d. dictionary definitions.
When people take several very different mental abilities tests, their scores across tests are often similar or positively correlated. This best supports:
a. Spearman's two-factor theory of intelligence b. Gardner's multiple intelligences theory c. Sternberg's triarchic theory of intelligence d. Cattell's concept of crystallized and fluid intelligence
Some drugs may act on all types of neurons by
A. blocking all receptor types. B. interfering with metabolism. C. preventing absorption of nutrients. D. altering the electrical potential across the cell membrane.
Sandy's favorite activity is to go to Las Vegas and play the slot machines. Her gambling behavior is being reinforced on a ______ schedule
a. fixed-ratio c. variable-ratio b. fixed-interval d. variable-interval