The purpose of the control group is to
a. make the experiment more complex.
b. isolate the effect of the independent variable on the dependent variable.
c. make statistical significance more likely.
d. isolate the effect of the dependent variable on the independent variable.
B
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By age 8, what percentage of Caucasian American girls has developed breasts or pubic hair?
A. 1 out of 2 B. 1 out of 7 C. 3 out of 4 D. 4 out of 5
Salvador is a stage magician. As part of his act, Salvador identifies the written contents of a sealed envelope. This aspect of Salvador's performance is called
a. psychokinesis. b. telepathy. c. subliminal perception. d. clairvoyance. e. precognition.
You are about to take part in a sleep study. Which of the following brain study techniques might be used by the researcher?
a. brain lesioning c. autopsy b. brain ablation d. EEG
Kim just received an A on her term paper, which she believes she got because she is a very bright student and worked hard. If Julian Rotter described Kim, which of the following would you find in his description?
a) "has an internal locus of control" b) "has an external locus of control" c) "tends to be a low sensation seeker" d) "tends to be a high sensation seeker"