To control for the placebo effect, the researcher must?

A. Ignore any use of placebos.
B. Include a placebo in all treatment levels.
C. Include a placebo in one treatment level.
D. You cannot control the placebo effect.


Answer: C

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Which statement below best describes the ways Victims and Creators use their energy in any situation?

a. Victims use all their energy in judging themselves or others, while Creators use their energy to solve the problem. b. Creators use all their energy in judging themselves or others, while Victims use their energy to solve the problem. c. Victims and Creators use their energy to find the best solutions for the problems they face. d. Creators and Victims use their energy to place blame on the causes of their problems.

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To calculate a z score, you subtract ______.

a. the mean from the raw score and divide this difference by the standard deviation b. the mean from the raw score and divide this difference by the variance c. the raw score from the mean and divide this difference by the standard deviation d. the raw score from the mean and divide this difference by the variance

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When teachers make connections across lessons, classes, communities and grades

a. they are practicing direct instruction. b. they encourage students to communicate their preferences. c. they are fostering interconnections between new knowledge and prior knowledge. d. they are not focusing on the required curriculum.

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When a previously reinforced behavior is no longer reinforced and its rate of

occurrence decreases, what behavioral principle is being used? a. Punishment b. Positive Reinforcement c. Positive Punishment d. Extinction

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