Affective forecasting and individual differences: accuracy for relational events and anxious attachment.

We examined whether accuracy of affective forecasting for significant life events was moderated by a theoretically relevant individual difference (anxious attachment), with different expected relations to predicted and actual happiness. In 3 studies (2 cross-sectional, 1 longitudinal), participants predicted what their happiness would be after entering or ending a romantic relationship. Consistent with previous research, people were generally inaccurate forecasters. However, inaccuracy for entering a relationship was significantly moderated by anxious attachment. Predictions were largely unrelated to anxious attachment, but actual happiness was negatively related to attachment anxiety. Moderation for breaking up showed a similar but less consistent pattern. These results suggest a failure to account for one's degree of anxious attachment when making affective forecasts and show how affective forecasting accuracy in important life domains may be moderated by a focally relevant individual difference, with systematically different associations between predicted and actual happiness.