Belief Perseverance Study Design
In a study on belief perseverance, college students were presented with fabricated evidence suggesting that extroverts are more successful in business. After a thorough debriefing in which the evidence was revealed to be false, participants rated their belief in the link between extroversion and business success. The results indicated that 75% of participants maintained a moderate to strong belief in the initial claim. Which of the following modifications to the research design would have most strengthened the study’s validity?
A
Measuring students’ own personality types
B
Including a control group who never saw the false information
C
Conducting follow-up interviews with participants
D
Using a larger sample size of students
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