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 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

Question

Quizplus · Accepted Answer

By comparing groups that joined a fraternity/sorority to those who did not, Dr. Fletcher can address threats related to maturation, selection, and history, but this design does not inherently control for experimenter bias, which involves the researcher's expectations influencing the outcome.

Dr Fletcher Is Interested in Whether Joining a Fraternity/sorority Causes