Professor Chadwick evaluated a graduate student's research proposal negatively simply because he had heard a rumor about the student's incompetence. When later informed that the rumor had been patently false, the professor's assessment of the student's research proposal remained almost as negative as it was originally. This best illustrates

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This scenario exemplifies belief perseverance, which is the tendency to maintain one's beliefs even after they have been discredited. The professor had a preconceived negative belief about the student's abilities based on a false rumor, and even when presented with evidence to the contrary, he persisted in his negative evaluation. This suggests that his initial belief was influencing his judgment, rather than the actual quality of the research proposal.

Professor Chadwick Evaluated a Graduate Student's Research Proposal Negatively Simply