In a series of four studies, Ebert and co-authors Daniel Gilbert (Harvard) and Timothy Wilson (University of Virginia) use methods of prediction called forecasting and backcasting to show how they lead to quite different outcomes. Consumers can predict their feelings following an event by forecasting--first imagining their feelings when the event occurs ("I'll be very unhappy if I see the Red Sox lose today") and then considering how those feelings might change over time ("…but I'll probably feel better in a few days, in time for my birthday party"). Alternatively, they can predict their feelings following an event by backcasting-first imagining their feelings in a future period ("I'm going to be happy in a few days because my birthday party is coming up") and then considering the effects of the event ("…and if I see the Red Sox lose today it won't change that much").
For example, a person who sees an ad for a Caribbean Cruise in the dead of winter would expect to enjoy the trip more if the copy read, "Winter getting you down? How's it going to feel after three more weeks of this? Wouldn't a sun-filled tropical vacation help? Book one today," than if the ad simply touted the trip before invoking the customer's feelings. By first getting buyers to think ahead to more winter, the advertisement actually makes them consider the effects of the vacation on their feeling more then if they just think about the vacation.
People make a lot of decisions based on how they expect their choices to make them feel. "We found that we can easily change a consumer's expectations of those feelings," said Ebert. The differences in the information that forecasters and backcasters consider and the predictions that they make suggest that simply changing the order in which consumers think about a potential consumption event and how they expect to feel in the future can markedly change expectations about their feelings as a result of the event.o
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