During a repeated measures design, counseling researchers note that participants' mental health symptoms are fluctuating significantly. Which type of validity threat would most account for this occurrence?

a. History
b. Instrumentation
c. Attrition
d. Selection


Answer: b. Instrumentation

Psychology

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In Kohlberg's ____ stage of moral development, principles like compassion and justice come to underlie moral decision making

a. third b. fourth c. fifth d. sixth

Psychology

The owner of a store that buys and sells used books has just purchased one by a psychologist who proposed a set of innate principles of perception. The book was most likely written by a(n):

a. psychoanalyst b. Gestalt psychologist c. behaviorist d. Eclectic psychologist

Psychology

Women score LOWER than do men on:

A) extraversion. B) openness to ideas. C) agreeableness. D) neuroticism.

Psychology

Pam attended her 20th high school reunion and had a wonderful time dancing the old dances and singing the old songs. According to the multicontextual characteristic of development, her enjoyment may be attributed to:

a cohort effect. fond memories of high school. her success beyond high school. social context.

Psychology