McGillivray Shannon, Castel Alan D
a Department of Psychology , Weber State University , Ogden , Utah , USA.
b Department of Psychology , University of California , Los Angeles, Los Angeles, California , USA.
Exp Aging Res. 2017 May-Jun;43(3):233-256. doi: 10.1080/0361073X.2017.1298956.
Background/Study Context: Although explicit memory abilities decline during older adulthood, there is evidence that suggests that metacognitive capabilities are relatively well preserved. However, it is unclear what effect aging, consequences of forgetting, prior knowledge, and task experience have on the strategic control and use of one's metacognitive capabilities.
In the current study, older and younger adults were presented with six unique lists of words (Experiment 1), related and unrelated word pairs (Experiment 2), or items within specific scenarios (e.g., items to bring on a picnic; Experiment 3). For each item, participants assigned it a point value (from 0 to 10) that was akin to "betting" on the likelihood the item would be remembered. If the item was recalled (free recall in Experiments 1 and 3, cued recall in Experiment 2), participants received the points they had assigned to it, but if the item was forgotten they lost those points. Participants were told to maximize their point score and were told their score at the end of each list.
Although younger adults remembered more words in Experiment 1, older and younger adults were equally able to remember items assigned higher values, and accuracy of predictions and point scores increased with task experience. In Experiments 2 and 3, when participants were able to rely on semantic knowledge, age-related differences in memory performance were eliminated.
The results suggest that both younger and older adults achieve accurate metacognitive insight and are able to use this knowledge strategically in order to maximize goal-related memory outcomes and performance.
背景/研究背景:尽管明确记忆能力在成年后期会下降,但有证据表明元认知能力相对保留得较好。然而,目前尚不清楚衰老、遗忘后果、先验知识和任务经验对一个人的元认知能力的策略控制和运用有何影响。
在本研究中,向老年人和年轻人呈现六个独特的单词列表(实验1)、相关和不相关的单词对(实验2)或特定场景中的物品(例如野餐要带的物品;实验3)。对于每个物品,参与者为其分配一个从0到10的分值,这类似于对该物品被记住的可能性进行“下注”。如果该物品被回忆起来(实验1和3中的自由回忆,实验2中的线索回忆),参与者将获得他们分配给它的分值,但如果该物品被遗忘,他们就会失去这些分值。参与者被告知要使自己的分数最大化,并在每个列表结束时被告知他们的分数。
尽管在实验1中年轻人记住的单词更多,但老年人和年轻人同样能够记住被赋予较高分值的物品,并且预测的准确性和分数随着任务经验的增加而提高。在实验2和3中,当参与者能够依靠语义知识时,记忆表现上的年龄差异就消除了。
结果表明,年轻人和老年人都能获得准确的元认知洞察力,并且能够战略性地运用这些知识,以实现与目标相关的记忆结果和表现最大化。