Social Studies, 01.02.2022 23:20 gaby8282

Dr. F 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. F measures them for the 3 weeks before and the 3 weeks after. This type of design would be able to better address which of the following threats to internal validity?
a. History
b. Testing
c. Selection-history
d. Experimenter bias

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