Older adults report a higher frequency of autobiographical memories for experiences that occurred between ages 15 and 30, as compared with other life periods. This reminiscence bump is evident for memories involving positive, but not negative, emotions. The cultural life script hypothesis proposes that people share knowledge for the types and timing of positive landmark events and that this script guides the memory search to the bump period. The present research examined whether a reminiscence bump would be evident when memory cues prompted recall of surprising and unexpected events. Older adults recalled positive and negative, surprising positive and surprising negative, or highly expected and highly unexpected events. Adults' memory distributions were compared with distributions of predicted life events generated by undergraduates. Reminiscence bumps were found not only for memories of positive and expected events, but also for memories of surprising and unexpected events. Implications for the life script account are discussed.
Keywords Autobiographical memory . Recall . EmotionResearchers examining the distribution of autobiographical memories over the life span have consistently found that people over age 40 report a higher frequency of memories for experiences that occurred during adolescence and young adulthood than for any other life period (Berntsen & Rubin, 2004;Rubin & Berntsen, 2003;Rubin, Wetzler, & Nebes, 1986). This reminiscence bump has been found across cultures (Conway, Wang, Hanyu, & Haque, 2005;Janssen, Chessa, & Murre, 2005) and through the use of a variety of methods, including responses to word cues (Jansari & Parkin, 1996;Rubin & Schulkind, 1997), olfactory cues (Chu & Downes, 2000), and musical cues (Schulkind & Woldorf, 2005); it has been found for participants' most vivid (Fitzgerald, 1988;Robinson & Taylor, 1998;Webster & Gould, 2007) and most important (Berntsen & Rubin, 2002) autobiographical memories, as well as for life chapters (Thomsen & Berntsen, 2008) and stories that belong in a book about one's life (Fitzgerald, 1996).The reminiscence bump is a robust finding within the autobiographical memory literature, but it has not been found for all classes of memories. When adults are asked to think back over their lives and identify salient emotional or important events, a bump is evident in the distribution of positive, but not negative, memories (for an exception, see Davison & Feeney, 2008, for memories of regret). Rubin and Berntsen (2003;Berntsen & Rubin, 2002 have argued that this divergent pattern of findings for positive and negative memories is best explained by a cultural life script hypothesis: "The retrieval of autobiographical memories is governed by culturally shared representations of the prototypical life cycle that locate the majority of important transitional events in young adulthood and favor positive events" (p. 2). Examples of positive transitional milestones include marriage and childbirth. In contrast, because negative events are often unanticipated (e...