Rational brain · Judgment & Decision Science

Projection Bias

Predicting your future tastes and states from your current ones; the hungry shopper over-buys, the excited buyer over-commits, the calm signer under-insures.

An everyday example

Signing a two-year gym contract in January's enthusiasm.

What it can cost you

Commitments made by a self in a temporary state on behalf of a self who will not share it.

Warning signs

  • I am deciding for a year in a moment.
  • My current mood is doing the forecasting.

One thing to do

Ask how the opposite state would decide; if the answer differs, choose the shorter or reversible commitment.

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