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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:
Biologically Predisposed
Being biologically predisposed means having an increased likelihood of developing certain characteristics, behaviors, or diseases due to genetic factors.
Learned Habits
Behaviors acquired through repetition and reinforcement, becoming automatic responses to specific situations.
Biological Constraints
Biological constraints are limitations on learning that are caused by the biology of the organism, suggesting that some behaviors are inherently more difficult to learn than others due to genetics.
Ivan Pavlov
A Russian physiologist best known for his research in classical conditioning, particularly his experiments with dogs that led to the discovery of the conditioned reflex.
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