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Blind Spot Bias

Recognizing biases in others but not in yourself

Belief

What is it?

Blind spot bias is the cognitive blind spot in recognizing our own cognitive biases. Research shows that people readily identify biases in others while rating themselves as less susceptible. This "bias about biases" is particularly pernicious because it undermines efforts at self-improvement: if you don't believe you're biased, you won't try to correct for it. The asymmetry exists because we have direct access to our own thought processes (which feel logical and well-reasoned to us) but can only observe others' behavior (which may seem biased). We also motivate ourselves to see ourselves favorably. Ironically, learning about biases can increase blind spot bias—we may think our knowledge protects us while still falling victim to the same biases. Even intelligence doesn't protect against blind spot bias; some research suggests more intelligent people may be even more susceptible because they're better at rationalizing their biased conclusions. The antidote requires genuine intellectual humility, systematically seeking external perspectives, creating checklists and procedures that don't rely on self-assessment, and assuming you're at least as biased as those around you.

Example

Criticizing a colleague for favoritism while showing your own. Believing you're objective while others are biased. Thinking learning about biases makes you immune to them.

References

Pronin, E., Lin, D. Y., & Ross, L. (2002). The Bias Blind Spot: Perceptions of Bias in Self Versus Others. Personality and Social Psychology Bulletin, 28(3), 369-381.

Pronin, E., Gilovich, T., & Ross, L. (2004). Objectivity in the Eye of the Beholder: Divergent Perceptions of Bias in Self Versus Others. Psychological Review, 111(3), 781-799.

Scopelliti, I., Morewedge, C. K., McCormick, E., Min, H. L., Lebrecht, S., & Kassam, K. S. (2015). Bias Blind Spot: Structure, Measurement, and Consequences. Management Science, 61(10), 2468-2486.

How to Prevent It

Question

Could I be susceptible to the same biases I see in others?

Question

What would others say about my blind spots?

Question

Where have I made similar errors in the past?

Question

What bias am I most confident I don't have?

Question

If I were biased, how would I know?

Technique

Ask for honest feedback about your potential biases.

Technique

Assume you have blind spots and actively look for them.

Technique

Keep a log of decisions where you later realized bias.

Technique

Create a personal bias checklist based on past errors.

Technique

Have a trusted critic who will tell you uncomfortable truths.