Most studies show that only ___________ of college students and adults achieve formal operational thinking completely
a. 5% to 10% c. 20% to 40%
b. 10% to 20% d. 40% to 60%
d
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When a study has high ecological validity,
a. people tend to receive similar scores on two different versions of a relevant test. b. people typically make more errors than if the test is low in ecological validity. c. at least two researchers recorded the answers supplied by the participants. d. the setting for the study is similar to a setting found in the real world.
Women are __________ times more likely thanmen to develop panic disorder. The
disorder usually begins in __________ and rarely after the age of __________. a. two; early adulthood; 40 b. three; middle adulthood; 50 c. two; adolescence; 25 d. three; middle adulthood; 50 e. four; adolescence; 50
The procedure of habituation involves
a. presenting a specific stimulus over and over. b. learning to pay attention to an important signal. c. learning to ignore an unimportant stimulus. d. becoming more responsive to a specific stimulus.
The average human cell has __________ chromosomes.
A. 42 B. 46 C. 23 D. 26