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The Incentives Lab
HBT-COG-0306 · Dimension COG · Cognition

Fan Effect

As more facts are learned about a topic, retrieving any one fact slows.

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

Scientific Definition

As more facts are learned about a topic, retrieving any one fact slows.

Plain-English Definition

As more facts are learned about a topic, retrieving any one fact slows.

Feynman Explanation

The more you know, the harder it is to find the right thing at the right time.

Core Principle

As more facts are learned about a topic, retrieving any one fact slows.

Mechanisms

Psychological

Pending editorial review.

Behavioral Economic

As more facts are learned about a topic, retrieving any one fact slows.

Neurological

Pending editorial review.

Evolutionary

Pending editorial review.

Sociological

Pending editorial review.

Computational

Pending editorial review.

Systems

Knowledge management must organize, not just accumulate.

Inputs (Triggers)

Pending editorial review.

Outputs (Behaviors)

Pending editorial review.

Behavioral Signature

The more you know, the harder it is to find the right thing at the right time.

Examples

Everyday
  • Experts can be slower to answer simple questions because they know too much.
Modern (Organizational)
  • Knowledge management must organize, not just accumulate.
Historical

Pending editorial review.

Famous Experiments

Pending editorial review.

Design Principles

  • Use structured frameworks and retrieval cues.

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
Knowledge management must organize, not just accumulate.
Amplifying Incentives
Knowledge management must organize, not just accumulate.
Org Failure Modes
Knowledge management must organize, not just accumulate.
Societal Failure Modes
Pending editorial review (HBT v1.0 auto-seed).
Ethical Considerations
Pending editorial review (HBT v1.0 auto-seed).
Redesign Strategies
Use structured frameworks and retrieval cues.
Diagnostic Questions
  • Use structured frameworks and retrieval cues.
Warning Signs

Pending editorial review.

Red Flags

Pending editorial review.

Intervention Playbook
Individual
Use structured frameworks and retrieval cues.
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-0306 · COG
Fan Effect
FEAQAdaptability Quotien…AKAndragogy (Knowles)AAAttention as Trainab…BMBeginner's MindBEBizarreness EffectBTBloom's TaxonomyBMBlue Mind (Nichols)CPChange Personal Hist…ChChunkingCCChunking (Cognitive)

Knowledge Graph Neighbors

Auto-linked to the rest of the Human Behavior Taxonomy by family, domain, dimension, and shared keywords.

Same family
HBT-COG-0101Bizarreness Effect

Unusual or bizarre material is more memorable than common material.

Same family
HBT-COG-0184Continued Influence Effect

Believing previously learned misinformation even after it has been corrected.

Same family
HBT-COG-0202Crespi Effect

A conditioned response changes disproportionately when reinforcement changes.

Same family
HBT-COG-0284Explanation Effect

Forcing yourself to explain a concept reveals exactly where your understanding is hollow.

Same family
HBT-COG-0324Flynn Effect

IQ scores have risen substantially over generations.

Same family
HBT-COG-0697Von Restorff Effect

Items that stand out are more likely to be remembered.

Same family
HBT-COG-0011Adaptability Quotient (AQ)

Your capacity to learn, unlearn, and relearn faster than the environment changes.

Same family
HBT-COG-0037Andragogy (Knowles)

Malcolm Knowles's principles of adult learning: self-direction, experience as resource, readiness, problem-centered orientation, intrinsic motivation.

Same family
HBT-COG-0069Attention as Trainable Resource (Jha)

Amishi Jha's research: attention is a finite, depletable, but trainable cognitive resource — short daily mindfulness measurably improves it.

Same family
HBT-COG-0092Beginner's Mind

Approach a situation as if you knew nothing.

Same family
HBT-COG-0103Bloom's Taxonomy

Hierarchy of cognitive learning: Remember → Understand → Apply → Analyze → Evaluate → Create. Benjamin Bloom, 1956 (revised 2001).

Same family
HBT-COG-0104Blue Mind (Nichols)

Wallace J. Nichols: proximity to water reliably shifts the nervous system toward a calmer, more creative state.

Version History

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