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) .
-Which of the following would Dr.Fletcher need to do to his current study design to make it an interrupted time-series design?
A) Recruit a group of participants who joined a fraternity/sorority at a different school
B) Take measurements of body concern before and after joining a fraternity/sorority
C) Measure body concern using a different measure than the Body Concern Scale
D) Add an additional variable,such as self-esteem
Correct Answer:
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