In general, if the variance of the difference scores increases, then what will happen to the value of the t statistic?
A) It will increase (move farther toward the tail of the distribution).?
B) ?It will decrease (move toward 0 at the center of the distribution).
C) ?It will stay the same; the t statistic is not affected by the variance of the difference scores.
D) ?It may increase or may decrease. There is no consistent relationship between variance and the size of the t statistic.
B
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A. at exactly the same time that Piaget thought B. at an earlier age than Piaget thought C. much later than Piaget thought D. not at all
Which of the following best describes naturalistic observation?
a. You calculate internal and external validity. b. You look for an association between two variables. c. You just watch. d. You determine if there is a cause-and-effect relationship.
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A. behavioral B. client-centered C. rational-emotive D. psychodynamic
The prenatal period ends
a. 10 days after conception. b. at birth. c. when the child can walk. d. at puberty. e. at retirement.