The placebo effect is a form of
a. anthropomorphic error.
b. somatization variable.
c. research participant bias.
d. researcher bias.
C
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Which psychiatric condition, if any, do people usually have before developing anorexia nervosa?
a. Major depression b. Alcohol or drug abuse c. Attention deficit disorder d. None
In a matched-pair design, ______.
A. all groups of individuals receive different levels of each independent variables B. a single group of individuals is given different levels of the independent variables C. all groups of individuals receive the same level of the independent variables D. all groups of individuals are matched on certain characteristics
Most popular self-help books, like the kind sold in mall bookstores:
a. are never evaluated to see if they actually help people. b. do help people, but in unexpected ways. c. definitely do not help people. d. help some people, but do not help others.
The degree of relationship between two or more variables is ______
a. correlation b. validity c. reliability d. a hypothesis