One reason to prescreen participants is to ______.

A. increase external validity
B. ensure that the study is ethical
C. increase heterogeneity of the sample
D. ensure the study uses random assignment

Ans: B

Psychology

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Piaget's theory of development assumed that all children pass through a series of ____ universal stages in a fixed order from birth to adolescence. These are ______

a) 5; sensorimotor, preoperational, formal operational concrete operational, and maturation b) 4; sensorimotor, preoperational, concrete operational, and formal operational c) 3; preoperational, concrete operational, and formal operational d) 6; sensorimotor, preoperational, concrete operational, formal operational, assimilation, and accommodation

Psychology

Compared to women working in traditional occupations, women in nontraditional occupations are a. less likely to believe that they are being sexually harassed. b. more likely to believe that they are being sexually harassed. c. less likely to experience sexual harassment

d. more likely to experience sexual harassment.

Psychology