Coolidge Effect is renewed interest in a stimulus when a novel stimulus is introduced. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0191, within the Social family. The core principle: renewed interest in a stimulus when a novel stimulus is introduced. In incentive terms, it matters because it changes the payoff people perceive before they choose — which means it can be designed for, or exploited.
Scientific Definition
Renewed interest in a stimulus when a novel stimulus is introduced.
Plain-English Definition
Renewed interest in a stimulus when a novel stimulus is introduced.
Feynman Explanation
New options reawaken old appetites.
Core Principle
Renewed interest in a stimulus when a novel stimulus is introduced.
Mechanisms
Pending editorial review.
Renewed interest in a stimulus when a novel stimulus is introduced.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Novelty re-energizes engagement, for better and worse.
Inputs (Triggers)
Pending editorial review.
Outputs (Behaviors)
Pending editorial review.
Behavioral Signature
New options reawaken old appetites.
Examples
- A team loses steam on a project until a new competitor enters the market.
- Novelty re-energizes engagement, for better and worse.
Pending editorial review.
Original analysis from The Incentives Lab — how this element behaves inside real payoff structures.
Why this element matters to incentive design
This is one of the elements leaders describe as a values gap. It is a payoff gap. The mechanism underneath it is straightforward: renewed interest in a stimulus when a novel stimulus is introduced. You can recognize it in the field by its signature: new options reawaken old appetites. Every element in the Cognition dimension changes the perceived payoff of an action before the action happens, which is exactly where incentive design has leverage.
How it gets exploited
Left undesigned, novelty re-energizes engagement, for better and worse. It is amplified whenever novelty re-energizes engagement, for better and worse. Inside organizations that shows up as novelty re-energizes engagement, for better and worse. The pattern is the same one Goodhart's Law describes: the measurable proxy attracts the effort, and the purpose behind it quietly loses funding.
How the Lab designs around it
The redesign move is to introduce small novelties to sustain momentum without constant pivots. The test of any redesign here is simple: after the change, can you name what the organization is now doing less of? If not, the payoff structure did not actually move.
Famous Experiments
Pending editorial review.
Design Principles
- Introduce small novelties to sustain momentum without constant pivots.
Measurement Approaches
Pending editorial review.
Evidence
Pending editorial review.
Pending editorial review.
The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Introduce small novelties to sustain momentum without constant pivots.
Pending editorial review.
Pending editorial review.
Interactive Mini Network
Click any neighbor to re-center the graph and follow the threads of connection.
Knowledge Graph Neighbors
Auto-linked to the rest of the Human Behavior Taxonomy by family, domain, dimension, and shared keywords.
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We recognize faces from our own race more accurately than others.
Underestimating how common our positive traits and behaviors are.
We accept vague, positive personality descriptions as highly accurate.
People change behavior when they know they are being observed.
Competent people become more likable after a small visible mistake.
A group decides on a course of action that nobody actually wants, because everyone assumes others prefer it.
Where Coolidge Effect is cited in the corpus
Essays, field guides, and diagnostics from The Incentives Lab that apply this element.
- EssayGoodhart's Law in the Real World
How measurable proxies capture judgment.
- EssayThe Perverse Incentives Hiding in Your KPIs
Cognitive shortcuts turned into scorecards.
- EssayAI Agents Inherit Your Incentives
How this element propagates into automated systems.
- ReferenceThe Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
- CourseIncentives 101
The free ten-part primer on reading a payoff structure.
Questions about Coolidge Effect
- What is Coolidge Effect?
- Coolidge Effect is renewed interest in a stimulus when a novel stimulus is introduced. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0191, within the Social family. The core principle: renewed interest in a stimulus when a novel stimulus is introduced. In incentive terms, it matters because it changes the payoff people perceive before they choose — which means it can be designed for, or exploited.
- What is an example of Coolidge Effect?
- Novelty re-energizes engagement, for better and worse. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-COG-0191).
- How is Coolidge Effect exploited?
- Novelty re-energizes engagement, for better and worse.
- How do you design around Coolidge Effect?
- Introduce small novelties to sustain momentum without constant pivots.
- Which behavioral dimension does Coolidge Effect belong to?
- Coolidge Effect is classified in the Cognition dimension (COG) of the Human Behavior Taxonomy™, family "Social", class "Mental Model". Its permanent identifier is HBT-COG-0191 and its evidence grade is B.