Advanced topic: If the correlation coefficient for a study is known, figuring the proportionate reduction in error requires
A) dividing the correlation coefficient by 2.
B) taking the square root of the correlation coefficient.
C) squaring the correlation coefficient.
D) multiplying the correlation coefficient by 2.
C
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Which of the following is NOT one of the reasons the book gives for the importance of discussing first sexual experiences?
a. Becoming sexually active is a significant change that affects relationships with others. b. The first experience can influence your reaction to future sexual encounters. c. Most first experiences are neutral and it's important to explore why that is so that you can function better in the future. d. Such a fuss is made about it, it simply can't be ignored.
When a researcher sets up a study so that the participants do not know to what condition they have been assigned, we refer to this design as
a. a blind study b. a cover story design. c. a control design.. d. an externally valid design.