DrFletcher Is Interested in Understanding Whether Joining a Fraternity/sorority Causes

Essay

Dr.Fletcher is interested in understanding 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,where higher scores indicate higher body concerns).

-As the study is described,explain a selection threat that may be present in Dr.Fletcher's study.What could Dr.Fletcher do to address this threat?