In random assignment, a researcher makes certain that each participant has an equal chance of being assigned to any of the groups or conditions in an experiment
Indicate whether the statement is true or false
T
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Giftedness is an extreme of intelligence defined as having an IQ score of ____
a. ?100 or above b. ?130 or above c. ?150 or above d. ?170 or above
Analytic ability involves the ability to know that a plan will work
a. True b. False Indicate whether the statement is true or false
A study of officers who had been in a shooting incident (in many cases someone had been killed) found that, after the incident, almost half of the officers experienced
A. difficulty sleeping. B. feelings of isolation. C. feeling angry. D. all of the above
If the center response option is important, the researcher should provide an _____ number of response options (intervals) for bipolar items
a. even c. absurd b. odd d. relative