In order to help caregivers of ill children, Steve randomly assigns caregivers to two different
support groups or a waiting list, control group. In this case, group membership would be
considered:
A) a treatment variable. B) a dependent variable.
C) a subject variable. D) a confounding variable.
A
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To investigate the effects of a new medication on weight loss among obese patients and protect for internal validity, a researcher could utilize
a) random assignment b) random selection. c) a case study approach. d) an experimental analysis of behavior.
A researcher asked students of different ages "What would the world be like if humans had tails?" According to Piaget's theory, which one of the following answers would be most likely from an adolescent in the formal operational stage?
a. People don't have tails, so this is a useless exercise. b. I guess they could swing from trees just like the monkeys I saw at the zoo. c. People would be able to hold tails and pass notes under the table while still keeping both hands on the table. d. I wouldn't like having a tail all the time.