What is a good control group for a research study on people with eating disorders?
A. People who have eating disorders and a wide range of educational backgrounds
B. A group that is comparable to the one with eating disorders, except that they eat normally
C. A group that is drawn from the sample of people with eating disorders
D. People who used to have eating disorders but say they no longer do
Answer: B
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c. crack cocaine. d. methamphetamine
To compensate for the effects of retesting in longitudinal research, Schaie developed a new research design called ______ research
Fill in the blank with correct word
The National Football League (NFL) uses a cognitive aptitude test called the Wonderlic. The leaked Wonderlic scores of several high profile players suggests that the test
A) may have low validity. B) may have low reliability. C) has high validity. D) has high reliability.
Piaget's fourth stage of cognitive development, which extends from eleven or twelve years of age on, is:
A) concrete operational. B) formal operational. C) preoperational. D) sensorimotor.