Affective forecasting

Researchers agree this effect is real. They do not agree on how strong it is, and that argument is still going on. So you can trust the direction, but not any exact number.

Assistant professors were asked to predict how unhappy they would be if they were denied tenure, the verdict that shapes an academic career. They forecast lasting damage. Then the researchers found people who actually had been denied tenure years earlier and measured them. They were about as happy as the ones who got it. Gilbert and Wilson traced the miss to two mechanisms. Focalism: when you imagine an event, you stare straight at it and forget that ordinary life, work, family, weather, keeps running and keeps claiming your attention. And immune neglect: everyone owns a psychological immune system that rationalises, reframes, and makes sense of what happens, and nobody budgets for it in the forecast. One later experiment made the miss physical. People choosing a dose of a mood-repair drug before a romantic rejection picked twice the dose that people who had just actually been rejected chose. The forecast of the blow was double the blow.

Big decisions ride on these forecasts. People stay in wrong jobs because they overprice the pain of leaving, and chase titles because they overprice the joy of arriving. The bias inflates both tails, so you overpay for wins and overinsure against losses. Two working corrections. Stop simulating and start sampling: find someone who actually lives inside the outcome you are imagining and ask what an ordinary Tuesday feels like, because their report beats your imagination. And widen the frame on purpose: list what else will fill the weeks after the event, since that is exactly what focalism deletes. The honest limit is the dispute itself. The critics showed that when you ask people how they will feel about the event specifically, immediately afterwards, forecasts are fairly accurate. The reliable miss is about your life overall and about how long the feeling lasts. Which happens to be the version that matters for decisions, because nobody quits a job over how they will feel for one hour.

Source: Wilson and Gilbert, Affective Forecasting, Advances in Experimental Social Psychology (2003). The tenure study: Gilbert, Pinel, Wilson, Blumberg and Wheatley, Immune Neglect, Journal of Personality and Social Psychology (1998). The dispute: Levine, Lench, Kaplan and Safer, Accuracy and Artifact (2012); Wilson and Gilbert, The Impact Bias Is Alive and Well (2013); and the reply, Like Schrödinger's Cat, the Impact Bias Is Both Dead and Alive (2013).

Draw your own card. It does not take long, and it rewards taking your time.