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The Incentives Lab
HBT-COG-0611 · Dimension COG · Cognition

Serial-Position Effect

We remember the beginning and the end of a list better than the middle.

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

Scientific Definition

We remember the beginning and the end of a list better than the middle.

Plain-English Definition

We remember the beginning and the end of a list better than the middle.

Feynman Explanation

Decks die in the middle.

Core Principle

We remember the beginning and the end of a list better than the middle.

Mechanisms

Psychological

Pending editorial review.

Behavioral Economic

We remember the beginning and the end of a list better than the middle.

Neurological

Pending editorial review.

Evolutionary

Pending editorial review.

Sociological

Pending editorial review.

Computational

Pending editorial review.

Systems

Order matters in agendas, pitches, and product lineups.

Inputs (Triggers)

Pending editorial review.

Outputs (Behaviors)

Pending editorial review.

Behavioral Signature

Decks die in the middle.

Examples

Everyday
  • Primacy and recency effects in word recall, candidate interviews, and ballot order.
Modern (Organizational)
  • Order matters in agendas, pitches, and product lineups.
Historical

Pending editorial review.

Famous Experiments

Pending editorial review.

Design Principles

  • Put what must be remembered first or last. Never bury it at position 4 of 7.

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
Order matters in agendas, pitches, and product lineups.
Amplifying Incentives
Order matters in agendas, pitches, and product lineups.
Org Failure Modes
Order matters in agendas, pitches, and product lineups.
Societal Failure Modes
Pending editorial review (HBT v1.0 auto-seed).
Ethical Considerations
Pending editorial review (HBT v1.0 auto-seed).
Redesign Strategies
Put what must be remembered first or last. Never bury it at position 4 of 7.
Diagnostic Questions
  • Put what must be remembered first or last. Never bury it at position 4 of 7.
Warning Signs

Pending editorial review.

Red Flags

Pending editorial review.

Intervention Playbook
Individual
Put what must be remembered first or last. Never bury it at position 4 of 7.
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-0611 · COG
Serial-Position Effect
SEAbAbstractionsABAdaptive BiasABAdditive BiasAAAffirming a DisjunctADAgent DetectionARAlder's RazorAlAlgorithmsAMAll Models Are WrongABAllegiance BiasAFAnecdotal Fallacy

Knowledge Graph Neighbors

Version History

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