According to the research on masturbation,
a. men and women report similar frequencies of masturbation.
b. the majority of both males and females report masturbating at least once a week.
c. among adults, gender differences in the frequency of masturbation are large.
d. masturbation is now much less common among both men and women, in comparison to 20 years ago.
C
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Piaget's stage theory is composed of a series of four universal stages that occur in a fixed order from birth through adolescence and are, in chronological order,
a. formal operational; concrete operational; preoperational; and sensorimotor. b. sensorimotor; preoperational; concrete operational; and formal operational. c. sensorimotor; formal operational; preoperational; and concrete operational. d. sensorimotor; formal operational; concrete operational; and preoperational.
The device that uses electrodes placed on the outside of the skull to record electrical activity within the brain, and is used in psychophysiological research, is called a(n) __________
a) CAT scan b) fMRI scan c) EEG d) experience