Dr. Segal is testing the hypothesis that television watching in children under the age of two enhances the development of language skills. In her study, the use of random assignment ____
a. ensures that the dependent variable reflects the personal qualities of the participants
b. addresses situational confounding variables, such as the time of day or weather conditions
c. ensures that the independent variable reflects the outcomes of the dependent variables
d. tends to cancel out individual differences among participants in the experimental group and the control group
ANSWER:
d
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Which is most responsible for the maturation of bones and muscles?
a. Adrenal gland androgens b. Ovary-released estrogen c. Brain released acetylcholine d. Thyroid-released thyroxine
_____ is a technique for reducing tension by consciously relaxing muscles of the body.
A) Relaxation training B) Biofeedback C) Meditation D) Massage therapy
Participants in the "hidden observer" demonstrations placed their arms in painfully cold water. Researchers found that highly hypnotized participants
A. reported experiencing no pain. B. could only experience pain after the experimenter told them they could. C. left their arm in the water, but reported through their "hidden observer" that the experience was painful. D. experienced no pain while hypnotized, but recalled the pain after the hypnosis was over.
Wundt’s principle of ____ states that prolonged experiences of one type cause one to seek the opposite type of experience.
a. contrasts b. the development of opposites c. creative resultants d. the heterogony of ends