RESEARCH STUDY 12.1
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/appearance concern (the Body Concern Scale).
-Refer to Research Study 12.1 above to answer the following question. In addition to measuring the group of participants who joined a fraternity/sorority,Dr.Fletcher decides to give the same measure to another group of 55 participants who decided to not join a fraternity/sorority.Doing this would help Dr.Fletcher address all of the following threats to internal validity EXCEPT:
A) Experimenter bias
B) Maturation
C) Selection
D) History
E) All of the above

Question

Quizplus · Accepted Answer

Including a control group of participants who did not join a fraternity/sorority helps address threats like maturation, selection, and history by providing a comparison group. However, it does not address experimenter bias, which involves the researcher's expectations influencing the results.

RESEARCH STUDY 12.1 Dr. Fletcher Is Interested in Whether Joining a Fraternity/sorority Causes