Stereotaxic procedures:

a. cause a great deal of brain damage
b. are used for brain tissue transplants
c. have been shown to be ineffective in treating Parkinson's disease
d. have only been performed on animals

B

Psychology

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The observation that Y decreases as X increases suggests a. a positive correlation

b. no correlation. c. a negative correlation. d. a curvilinear correlation.

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?Professor Goranson studies the relation between adolescents' self-esteem and the number of close friends they report having. After completing her statistical analyses, Professor Goranson finds that as the number of close friendships increased, adolescents' self-esteem rose moderately. Which correlation coefficient did she likely obtain?

a. ?–0.86 b. ?–0.35 c. ?+0.46 d. ?+0.98

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Psychology

One thing that's true about correlational studies is that they ____

a. identify third variables that account for associations among variables b. tell us the direction of causality between two variables c. can indicate the degree to which two variables are related d. are not dependent on the validity of research instruments

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Alcohol's effects on thinking and perception are most strongly influenced by ________

a. mood b. expectations c. IQ d. BAC

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Psychology