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The Incentives Lab
HBT-COG-0084 · Dimension COG · Cognition

Base Rate Fallacy

Ignoring general statistics in favor of specific, vivid information.

Probability·Mental Model·Grade B·draft· enriching…

Scientific Definition

Ignoring general statistics in favor of specific, vivid information.

Plain-English Definition

Ignoring general statistics in favor of specific, vivid information.

Feynman Explanation

The forest is full of oaks; you are still describing one leaf.

Core Principle

Ignoring general statistics in favor of specific, vivid information.

Mechanisms

Psychological

Pending editorial review.

Behavioral Economic

Ignoring general statistics in favor of specific, vivid information.

Neurological

Pending editorial review.

Evolutionary

Pending editorial review.

Sociological

Pending editorial review.

Computational

Pending editorial review.

Systems

Base rates are the most underused tool in executive hiring.

Inputs (Triggers)

Pending editorial review.

Outputs (Behaviors)

Pending editorial review.

Behavioral Signature

The forest is full of oaks; you are still describing one leaf.

Examples

Everyday
  • A 'perfect' candidate is hired despite a low base rate of success in that role.
Modern (Organizational)
  • Base rates are the most underused tool in executive hiring.
Historical

Pending editorial review.

Famous Experiments

Pending editorial review.

Design Principles

  • Start every prediction with the base rate, then adjust.

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
Base rates are the most underused tool in executive hiring.
Amplifying Incentives
Base rates are the most underused tool in executive hiring.
Org Failure Modes
Base rates are the most underused tool in executive hiring.
Societal Failure Modes
Pending editorial review (HBT v1.0 auto-seed).
Ethical Considerations
Pending editorial review (HBT v1.0 auto-seed).
Redesign Strategies
Start every prediction with the base rate, then adjust.
Diagnostic Questions
  • Start every prediction with the base rate, then adjust.
Warning Signs

Pending editorial review.

Red Flags

Pending editorial review.

Intervention Playbook
Individual
Start every prediction with the base rate, then adjust.
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
Pending editorial review (HBT v1.0 auto-seed).
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-0084 · COG
Base Rate Fallacy
BRBRBayes' Rule (Updating)BTBayes' TheoremBUBayesian UpdatingBLBeginner's LuckBSBlack SwanCoCoincidenceDiDistributionsErErgodicityFEFermi EstimateHUHeisenberg Uncertain…

Knowledge Graph Neighbors

Version History

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