Zhang Fan, Zhang Xin, Luo Meng, Geng Haiyan
School of Psychological and Cognitive Sciences, Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, P. R. China.
Department of Psychology, the Chinese University of Hong Kong, Hong Kong.
PLoS One. 2016 Dec 29;11(12):e0168896. doi: 10.1371/journal.pone.0168896. eCollection 2016.
Existing literature suggests that feedback could effectively reduce false memories in younger adults. However, it is unclear whether memory performance in older adults also might be affected by feedback. The current study tested the hypothesis that older adults can use immediate feedback to adjust their memory strategy, similar to younger adults, but after feedback is removed, older adults may not be able to maintain using the memory strategy. Older adults will display more false memories than younger adults due to a reduction in attentional resources. In Study 1, both younger and older adults adjusted gist processing and item-specific processing biases based on the feedback given (i.e., biased and objective feedback). In Study 2 after the feedback was removed, only younger adults with full attention were able to maintain the feedback-shaped memory strategy; whereas, both younger adults with divided attention and older adults had increased false memories after feedback was removed. The findings suggest that environmental support helps older adults as well as younger adults to adopt a memory strategy that demands high attentional resources, but when the support is removed, older adults can no longer maintain such a strategy.
现有文献表明,反馈可以有效减少年轻人的错误记忆。然而,尚不清楚老年人的记忆表现是否也会受到反馈的影响。当前研究检验了这样一个假设:老年人可以像年轻人一样,利用即时反馈来调整他们的记忆策略,但在反馈消除后,老年人可能无法维持使用该记忆策略。由于注意力资源减少,老年人会比年轻人表现出更多的错误记忆。在研究1中,年轻人和老年人都根据所给出的反馈(即有偏差的反馈和客观反馈)调整了主旨加工和特定项目加工偏差。在研究2中,反馈消除后,只有注意力集中的年轻人能够维持由反馈塑造的记忆策略;而注意力分散的年轻人和老年人在反馈消除后错误记忆都增加了。研究结果表明,环境支持有助于老年人和年轻人采用需要高注意力资源的记忆策略,但当这种支持消除后,老年人就无法再维持这样的策略了。