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The Incentives Lab
HBT-COG-0085 · Dimension COG · Cognition

Base Rate Neglect

We ignore underlying probabilities in favor of vivid specifics.

Probability Bias·Cognitive Bias·Grade B·draft· enriching…

Scientific Definition

We ignore underlying probabilities in favor of vivid specifics.

Plain-English Definition

We ignore underlying probabilities in favor of vivid specifics.

Feynman Explanation

The story is true. The story is also rare. Both can be true.

Core Principle

We ignore underlying probabilities in favor of vivid specifics.

Mechanisms

Psychological

We ignore underlying probabilities in favor of vivid specifics.

Behavioral Economic

Pending editorial review.

Neurological

Pending editorial review.

Evolutionary

Pending editorial review.

Sociological

Pending editorial review.

Computational

Pending editorial review.

Systems

Pending editorial review.

Inputs (Triggers)

Pending editorial review.

Outputs (Behaviors)

Pending editorial review.

Behavioral Signature

The story is true. The story is also rare. Both can be true.

Examples

Everyday
  • Fearing a rare disaster while ignoring the common one happening right now.
Modern (Organizational)
  • Risk programs that miss the modal failure while obsessing over the dramatic one.
Historical

Pending editorial review.

Famous Experiments

Pending editorial review.

Design Principles

  • Always state base rates alongside narratives.

Measurement Approaches

Pending editorial review.

Evidence

Evidence Grade
B (A strongest → E speculative)
Replication
★★★☆☆
Intervention Confidence
3 / 5
Consensus
Pending editorial review (HBT v1.0 auto-seed).
Limitations
Pending editorial review (HBT v1.0 auto-seed).
Open Research Questions

Pending editorial review.

Primary References

Pending editorial review.

Signature Section

The Perverse Incentive Lens™

How this behavior is exploited — and how to redesign around it.

Exploitation
AI ethics worried about sci-fi scenarios; current-day misuse unaddressed.
Amplifying Incentives
Risk programs that miss the modal failure while obsessing over the dramatic one.
Org Failure Modes
Risk programs that miss the modal failure while obsessing over the dramatic one.
Societal Failure Modes
Pending editorial review (HBT v1.0 auto-seed).
Ethical Considerations
Pending editorial review (HBT v1.0 auto-seed).
Redesign Strategies
Always state base rates alongside narratives.
Diagnostic Questions
  • Always state base rates alongside narratives.
Warning Signs

Pending editorial review.

Red Flags

Pending editorial review.

Intervention Playbook
Individual
Always state base rates alongside narratives.
Team
Pending editorial review (HBT v1.0 auto-seed).
Organization
Pending editorial review (HBT v1.0 auto-seed).
Policy
Pending editorial review (HBT v1.0 auto-seed).
AI Implications
Detection
AI ethics worried about sci-fi scenarios; current-day misuse unaddressed.
Measurement
Pending editorial review (HBT v1.0 auto-seed).
Mitigation
Pending editorial review (HBT v1.0 auto-seed).
Responsible Use
Pending editorial review (HBT v1.0 auto-seed).

Interactive Mini Network

Click any neighbor to re-center the graph and follow the threads of connection.

HBT-COG-0085 · COG
Base Rate Neglect
BRAAAmbiguity AversionCFConjunction FallacyGFGambler's FallacyHFHot-Hand FallacyOBOptimism BiasPBPessimism BiasPIPessimism in Forecas…PFPlanning FallacyZBZero-Risk BiasABAction Bias

Knowledge Graph Neighbors

Version History

v1.1.0 · 2026-06-28Initial auto-seed from corpus.