Scientific Definition
Unpredictable rewards produce the strongest, most persistent behavior.
Plain-English Definition
Unpredictable rewards produce the strongest, most persistent behavior.
Feynman Explanation
The slot machine is the most studied animal in the lab.
Core Principle
Unpredictable rewards produce the strongest, most persistent behavior.
Mechanisms
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Inputs (Triggers)
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Outputs (Behaviors)
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Behavioral Signature
The slot machine is the most studied animal in the lab.
Examples
- Notifications, social feeds, email — all variable-reward by design.
- Compensation that surprises occasionally outperforms perfectly predictable bonuses.
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Famous Experiments
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Design Principles
- Use variable rewards to teach; switch to predictable rewards to retain.
Measurement Approaches
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Evidence
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The Perverse Incentive Lens™
How this behavior is exploited — and how to redesign around it.
- Use variable rewards to teach; switch to predictable rewards to retain.
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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.
Clear ownership of outcomes, not just tasks.
Asymmetric information attracts the worst counterparties.
We defer to perceived expertise, rank, or uniform.
Vastness that exceeds existing schemas dissolves the self briefly.
Negative feedback returns a system toward a target.
Membership in a group is a baseline human need.
Individually rational choices that produce a collectively bad outcome.
We seek tasks where we feel effective and improving.
Competing loyalties that compromise judgment.
Value is judged against whatever sits next to it.
Outcomes depend on aligning choices, not on who 'wins.'
Signals whose value depends on being expensive to fake.