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Bias Blind Spot: Structure, Measurement, and Consequences

Scopelliti, I., Morewedge, C. K., McCormick, E. , Min, L., LeBrecht, S. & Kassam, K. (2015). Bias Blind Spot: Structure, Measurement, and Consequences. Management Science, 61(10), pp. 2468-2486. doi: 10.1287/mnsc.2014.2096


People exhibit a bias blind spot: they are less likely to detect bias in themselves than in others. We report the development and validation of an instrument to measure individual differences in the propensity to exhibit the bias blind spot that is unidimensional, internally consistent, has high test-retest reliability, and is discriminated from measures of intelligence, decision making ability, and personality traits related to self-esteem, self-enhancement, and self-presentation. The scale is predictive of the extent to which people judge their abilities to be better-than-average for easy tasks and worse-than-average for difficult tasks, ignore the advice of others, and are responsive to an intervention designed to mitigate a different judgmental bias. These results suggest that the bias blind spot is a distinct metabias resulting from naïve realism rather than other forms of egocentric cognition, and has unique effects on judgment and behavior.

Publication Type: Article
Publisher Keywords: Bias Blind Spot, Judgment and Decision Making, Metacognition, Self-Awareness, Advice Taking, Debiasing
Subjects: H Social Sciences > HM Sociology
Departments: Bayes Business School > Management
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