In a Research Study, Participants Are Told That Louis Has

Short Answer

In a research study, participants are told that Louis has lived in Boston his whole life. They are then asked which is more likely:
A. Louis is a baseball fan, or
B. Louis is a baseball fan who roots for the Boston Red Sox. Which of the following is true?
A) Participants who answer 'A' are correct.
B) Participants who answer 'A' have committed the conjunction fallacy.
C) Participants who answer 'B' are demonstrating belief perseverance.