Which source of variation measured by a test statistic is a measure of the mean difference caused by a manipulation?
A. between-groups variability
B. between-persons variability
C. within-persons variability
D. within-groups variability
Answer: A
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The proper way to cite a source in a research report, when the author's name appears as the subject of the sentence, is "Smith, 2005, . . ."
a. True b. False Indicate whether the statement is true or false
Observer bias occurs when:
A. only one observer is used. B. observers know the goals of a study or the hypotheses being tested. C. observers are blind to the purposes of a study. D. All of the answers are correct.
While observing a Russian kindergarten class, Lev Vygotsky points out how one of the students is teaching herself during free playtime. What is this student engaging in?
A. private speech B. circular reactions C. scaffolding D. egocentrism
The complex set of behavioral, cultural, or psychological features associated with an individual’s sex is a person’s ______
A. gender B. sex C. sexual orientation D. gender identity