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Affect associated with negative autobiographical memories fades faster over time than affect associated with positive autobiographical memories (the fading affect bias). Data described in the present article suggest that this bias is observed when people use their own words to describe both the emotions that they originally felt in response to events in their lives and the emotions that they feel when they recall those events. The data also suggest that the fading affect bias is not a consequence of distortion in memory for the emotions experienced at event occurrence, but instead reflects current affective responses to memories for those events. Moreover, this bias has a social component. Frequently disclosed memories evince a stronger fading affect bias than less frequently disclosed memories. Memories disclosed to many types of people evince a stronger fading affect bias than memories disclosed to few types of people. Finally, the relation between social disclosure and fading affect appears to be causal: the results of an experiment demonstrate that social disclosure decreases the fading of pleasant affect and increases the fading of unpleasant affect associated with autobiographical memories.

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People may choose to rehearse their autobiographical memories in silence or to disclose their memories with other people. This paper focuses on five types of memory rehearsal: involuntary rehearsal, rehearsal to maintain an event memory, rehearsal to re-experience the emotion of an event, rehearsal to understand an event, or rehearsal for social communication. A total of 337 participants recalled event memories, provided estimates of how often each event was rehearsed and for what reason, and rated the affective characteristics of the events. Rehearsal frequency was highest for social communication and lowest for rehearsals aimed at understanding events. For many rehearsal types, rehearsal was more frequent for positive than negative events. Frequently rehearsed events tended to show less affective fading. The pattern changed when events were socially rehearsed. For positive events, increased social rehearsal was related to a reduction in affective fading. For negative events, increased social rehearsal was associated with increased affective fading.

Research has shown that the tendency for emotional affect to fade more over time for unpleasant events than for pleasant events, known as the Fading Affect Bias (FAB), increased across 3-month, 9-month and 4.5-year intervals. The current study attempted to determine the temporal locus of the FAB using the data set by Walker et al. as well as two additional data sets. All three data sets showed that the FAB was present after 1 day and persisted for 3 months, even though the affective fading for initially pleasant events slightly increased over time. Moreover, the third data set showed that the FAB was present for events occurring on the test day. Although the results challenge traditional conceptions of the FAB as a healthy coping mechanism that takes place across long periods, they fit well with the Broaden and Build Theory of positive emotions.