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The Incentives Lab
HBT-COG-0221 · Dimension COG · Cognition

Default Effect

Whatever is pre-selected wins more often than it should.

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

Scientific Definition

Whatever is pre-selected wins more often than it should.

Plain-English Definition

Whatever is pre-selected wins more often than it should.

Feynman Explanation

The most powerful policy in any company is the checkbox checked by default.

Core Principle

Whatever is pre-selected wins more often than it should.

Mechanisms

Psychological

Whatever is pre-selected wins more often than it should.

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 most powerful policy in any company is the checkbox checked by default.

Examples

Everyday
  • 401(k) enrollment skyrockets the day it becomes opt-out.
Modern (Organizational)
  • Defaults shape adoption more than communications campaigns ever do.
Historical

Pending editorial review.

Famous Experiments

Pending editorial review.

Design Principles

  • Audit every default in every workflow. Defaults are policy.

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
If AI tools are off by default, adoption stalls. On by default — it spreads.
Amplifying Incentives
Defaults shape adoption more than communications campaigns ever do.
Org Failure Modes
Defaults shape adoption more than communications campaigns ever do.
Societal Failure Modes
Pending editorial review (HBT v1.0 auto-seed).
Ethical Considerations
Pending editorial review (HBT v1.0 auto-seed).
Redesign Strategies
Audit every default in every workflow. Defaults are policy.
Diagnostic Questions
  • Audit every default in every workflow. Defaults are policy.
Warning Signs

Pending editorial review.

Red Flags

Pending editorial review.

Intervention Playbook
Individual
Audit every default in every workflow. Defaults are policy.
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
If AI tools are off by default, adoption stalls. On by default — it spreads.
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-0221 · COG
Default Effect
DEABAction BiasAHAffect HeuristicABAnchoring BiasDEDecoy EffectEEEndowment EffectFEFraming EffectHDHyperbolic DiscountingIEIKEA EffectIBInformation BiasLOLaw of Triviality + …

Knowledge Graph Neighbors

Version History

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