Streetlight Effect is looking where the light is, not where the keys are. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0642, within the Reasoning family. The core principle: looking where the light is, not where the keys are. 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
Looking where the light is, not where the keys are.
Plain-English Definition
Looking where the light is, not where the keys are.
Feynman Explanation
Most analytics happen where the data is, not where the answer is.
Core Principle
Looking where the light is, not where the keys are.
Mechanisms
Pending editorial review.
Looking where the light is, not where the keys are.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Decision analytics drift toward convenience.
Inputs (Triggers)
Pending editorial review.
Outputs (Behaviors)
Pending editorial review.
Behavioral Signature
Most analytics happen where the data is, not where the answer is.
Examples
- Measuring conversion because we have the data, not because it's the lever.
- Decision analytics drift toward convenience.
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 element is common enough to feel like human nature and specific enough to be engineered around. The mechanism underneath it is straightforward: looking where the light is, not where the keys are. You can recognize it in the field by its signature: most analytics happen where the data is, not where the answer is. 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, decision analytics drift toward convenience. It is amplified whenever decision analytics drift toward convenience. Inside organizations that shows up as decision analytics drift toward convenience. 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 start with the question; build the data toward it, not the other way. The leverage is not in explaining the behavior to people. It is in changing what the behavior earns.
Famous Experiments
Pending editorial review.
Design Principles
- Start with the question; build the data toward it, not the other way.
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.
- Start with the question; build the data toward it, not the other way.
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.
We notice what's present more than what's absent.
Vague personality descriptions feel uniquely accurate.
Doing something good gives us mental permission to do something bad.
We remember the beginning and the end of a list better than the middle.
Deriving general rules from specific examples; the leap from instance to concept.
The brain evolved to reason adaptively, not always truthfully, to reduce the cost of errors.
We solve problems by adding, even when subtracting would be better.
Assuming that if one option is true, another must be false, when both can be true.
Presuming a purposeful actor behind events that may have no actor at all.
What cannot be settled by experiment is not worth debating.
A finite set of well-defined instructions for solving a problem or performing a computation.
Every model simplifies reality; some are still useful.
Where Streetlight 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.
- CourseIncentives 101
The free ten-part primer on reading a payoff structure.
- ReferenceThe incentive glossary
Definitions for every mental model, bias, and fallacy in the corpus.
- ReferenceThe Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
Questions about Streetlight Effect
- What is Streetlight Effect?
- Streetlight Effect is looking where the light is, not where the keys are. It sits in the Cognition dimension (COG) of the Human Behavior Taxonomy™ as element HBT-COG-0642, within the Reasoning family. The core principle: looking where the light is, not where the keys are. 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 Streetlight Effect?
- Decision analytics drift toward convenience. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-COG-0642).
- How is Streetlight Effect exploited?
- Decision analytics drift toward convenience.
- How do you design around Streetlight Effect?
- Start with the question; build the data toward it, not the other way.
- Which behavioral dimension does Streetlight Effect belong to?
- Streetlight Effect is classified in the Cognition dimension (COG) of the Human Behavior Taxonomy™, family "Reasoning", class "Mental Model". Its permanent identifier is HBT-COG-0642 and its evidence grade is B.