What are the consequences of having a restricted range?
a. Obtaining a smaller r than otherwise would be the case.
b. Obtaining a larger r than otherwise would be the case.
c. Having a curvilinear instead of a linear relationship.
d. Having a correlation with a different direction than otherwise would be found.
a
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Eric is conducting a survey that asks about the use of illicit substances, and he recognizes that for many individuals, this is extremely sensitive information. Which format would best serve his needs?
a. group questionnaire b. drop-off survey c. focus group d. personal interview
Edward Thorndike's law of effect formed the conceptual structure of __________
a) Pavlov's formulation of classical conditioning. b) Watson's research with Little Albert. c) Skinner's work in operant conditioning. d) Ader's research with rats.
Which of the following statements is correct concerning correlation coefficients?
a) A correlation of +.89 is strong and –.89 is weak. b) A correlation of +.89 and –.89 are both strong and equally so. c) Correlation coefficients are indicators of cause and effect. d) A correlation of +1.5 is very strong.
What is the most recent conclusion concerning the role of stomach contractions in signaling hunger?
A. They have no influence. B. They play a minor role. C. They play a major role. D. They cannot be studied because of lack of technology.