Hyperbolic Discounting

What is Hyperbolic Discounting?

Hyperbolic discounting is a pattern in how delayed rewards lose value: the discount rate declines as the delay grows. A week's wait can matter much more when the reward is available now than when both options are months away.

An example of hyperbolic discounting

Imagine preferring $120 in 31 days to $100 in 30 days. When those same options become $120 tomorrow or $100 today, you switch to the $100. The relative delay is still one day, but bringing the options closer changes your preference.

This kind of reversal is what makes the pattern distinctive. Simply choosing a smaller reward sooner does not establish hyperbolic discounting.

Why it matters

A choice that looks attractive in advance may lose its appeal as an immediate alternative approaches. That can help explain conflicts between plans and later choices. Frederick, Loewenstein, and O'Donoghue's review (2002) examines the evidence and competing explanations.

Timing is not the only consideration. You may need money today or doubt that a promised later reward will arrive. Calling the choice a bias without examining those conditions misses the decision the person actually faces.

Can you avoid hyperbolic discounting?

Comparing choices made in advance with choices made near the reward can reveal a reversal. It does not establish a universal cure. The useful task is to understand what changed: the timing, the need, the certainty of payment, or the value placed on waiting.