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24 August, 17:59

Dr. fletcher is interested in whether joining a fraternity/sorority causes people to become more concerned about their attractiveness and appearance. he recruits a group of 55 freshmen (25 males, 30 females) who are planning to go through fraternity/sorority recruitment on his campus. after they join, he gives them a measure of attractiveness concern/appearance concern (the body concern scale). in addition to measuring the body concern of the participants who joined a fraternity/sorority both immediately before and immediately after they join, dr. fletcher measures them for the three weeks before and the three weeks after. this type of design is known as a/an:

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  1. 24 August, 20:47
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    Because he was unable to randomly assign participants to join a fraternity/sorority.
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