Previous research has shown that people with higher levels of Openness to Experience show higher levels of cognitive functioning. However, the mechanisms underlying this personality-cognition relation are not well understood. The goal of the current project was to examine whether strategy use mediates the relation between Openness to experience and retrospective memory, and whether the role of strategy use in the Openness-memory relation was the same in younger and older adults. Method: Two studies were conducted. In each of them, younger and older adults were administered a retrospective memory task (29 younger and 27 older in Study 1, 43 adults of all ages in Study 2). They were asked to report the strategies they used during the task, and to complete an Openness to Experience scale. Results: Consistent with previous reports, higher scores of Openness to experience and greater use of efficient memory strategies were associated with higher levels of memory performance. In addition, individual differences in memory strategy use mostly mediated the relation between Openness and memory performance. Results did not support a mediation model moderated by age. That is, the role of memory strategy use in the relation between Openness and memory was the same in younger and older adults. Conclusion: Higher levels of Openness are associated with better memory performance, mostly because people with higher levels of Openness use more efficient memory strategies.
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