Note that if Dr. Fletcher was concerned that students who choose to join fraternities/sororities are more concerned with their appearance overall. The way he should test whether this type of selection threat exists is: "Compare baseline levels of appearance concerns in fraternity/sorority students versus the average college student." (Option B)
A baseline in psychology research is a measurement of the variable of interest at the start of therapy or a study that is used to compare to later assessments to determine the efficacy of the treatment or conditions.
A baseline is a straight line that acts as a starting point or reference point for observing behavior. Because this behavioral performance is consistent, it is frequently used as a yardstick for determining how interventions and manipulations will alter the outcome. Experimental therapies, for example, are designed to change behavior.
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Full Question:
RESEARCH STUDY 13.1: 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 concern/appearance concern (the Body Concern Scale).
Suppose Dr. Fletcher was concerned that students who choose to join fraternities/sororities are more concerned with their appearance overall. How could he test whether this type of selection threat exists?
a. Examine whether any events occurred on campus that year that may influence appearance concerns for all students.
b. Compare baseline levels of appearance concerns in fraternity/sorority students versus the average college student.
c. Check that none of his participants had exceptionally high levels of appearance concerns at the beginning of his study.
d. Collect appearance concerns at more time points throughout the year from his subjects.
