Quasi-Hyperbolic (β-δ) Discounting is a present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally. It sits in the Time dimension (TIM) of the Human Behavior Taxonomy™ as element HBT-TIM-0008, within the Decision family. The core principle: a present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally. 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
A present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally.
Plain-English Definition
A present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally.
Feynman Explanation
Future-you is patient and disciplined. Present-you is the one with the credit card.
Core Principle
A present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally.
Mechanisms
Pending editorial review.
A present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Pending editorial review.
Savings defaults, subscription pricing, and retention timing.
Inputs (Triggers)
Pending editorial review.
Outputs (Behaviors)
Pending editorial review.
Behavioral Signature
Future-you is patient and disciplined. Present-you is the one with the credit card.
Examples
- Laibson's model of self-control failures in saving and consumption.
- Savings defaults, subscription pricing, and retention timing.
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: a present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally. You can recognize it in the field by its signature: future-you is patient and disciplined. Present-you is the one with the credit card. Every element in the Time 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, savings defaults, subscription pricing, and retention timing. It is amplified whenever savings defaults, subscription pricing, and retention timing. Inside organizations that shows up as savings defaults, subscription pricing, and retention timing. 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 move the decision earlier; commit future-you before present-you arrives. Measure the behavior, not the sentiment. A survey will tell you how people feel about this; only observed action tells you whether it changed.
Famous Experiments
Pending editorial review.
Design Principles
- Move the decision earlier; commit future-you before present-you arrives.
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.
- Move the decision earlier; commit future-you before present-you arrives.
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.
An automatic action triggered by a stable cue — built through repetition.
Our decisions are influenced by when events occur or when we evaluate them.
The relative valuation we place on rewards now vs. later — and how steeply we discount.
Small advantages, applied consistently, become uncatchable.
How much we value the present over the future.
How vividly we connect to our future self predicts long-term decision quality.
A single habit whose adoption cascades into many other behavior changes.
Creative work needs blocks of hours; managerial work runs on 30-minute slices. They destroy each other when mixed.
Where you can go is constrained by where you've been.
People preferentially process experience visually, auditorily, or kinesthetically. Match the channel; match the mind.
We judge probability by how similar an event is to a prototype.
H1 (managing the present) + H2 (transition mechanisms) + H3 (transformative futures) held simultaneously.
Where Quasi-Hyperbolic (β-δ) Discounting is cited in the corpus
Essays, field guides, and diagnostics from The Incentives Lab that apply this element.
- EssayThe Two-Week Incentive Sprint
Shortening the horizon between behavior and payoff.
- EssayIncentives Under Crisis
How time pressure rewrites payoffs.
- EssayAI Agents Inherit Your Incentives
How this element propagates into automated systems.
- ReferenceThe incentive glossary
Definitions for every mental model, bias, and fallacy in the corpus.
- CourseIncentives 101
The free ten-part primer on reading a payoff structure.
- ReferenceThe Periodic Table of Human Behavior
The full 1,267-element map this page belongs to.
Questions about Quasi-Hyperbolic (β-δ) Discounting
- What is Quasi-Hyperbolic (β-δ) Discounting?
- Quasi-Hyperbolic (β-δ) Discounting is a present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally. It sits in the Time dimension (TIM) of the Human Behavior Taxonomy™ as element HBT-TIM-0008, within the Decision family. The core principle: a present-bias kink (β) on top of exponential discounting (δ): immediate rewards get a bonus, all future rewards trade normally. 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 Quasi-Hyperbolic (β-δ) Discounting?
- Savings defaults, subscription pricing, and retention timing. The Incentives Lab catalogs everyday, organizational, and historical instances of this element on its Human Behavior Taxonomy™ page (HBT-TIM-0008).
- How is Quasi-Hyperbolic (β-δ) Discounting exploited?
- Savings defaults, subscription pricing, and retention timing.
- How do you design around Quasi-Hyperbolic (β-δ) Discounting?
- Move the decision earlier; commit future-you before present-you arrives.
- Which behavioral dimension does Quasi-Hyperbolic (β-δ) Discounting belong to?
- Quasi-Hyperbolic (β-δ) Discounting is classified in the Time dimension (TIM) of the Human Behavior Taxonomy™, family "Decision", class "Mental Model". Its permanent identifier is HBT-TIM-0008 and its evidence grade is B.