To address gaps in previous research, we examined daily within-person associations between awareness of age-related change (AARC) and cognitive performance in older adults. One hundred twelve adults aged 60–90 participated in an online daily diary study for nine consecutive days. On Day 1, they reported demographic information. On Days 2–9, they reported daily AARC, subjective age, and stressors and completed three tasks that gauged memory (word recall), perceptual speed (number comparison), and reasoning (letter series), respectively, once per day. Unconditional multilevel models revealed significant within-person fluctuations in daily cognitive performance and daily AARC. Controlling for age, education, health, and daily stressors, daily awareness of age-related losses was negatively associated with letter series scores of the same day and changes from one day to the next. The effects held over and above AARC gains and subjective age. Dynamic, naturally occurring perceptions of ageing may influence within-person concurrent and subsequent changes in reasoning performance on a daily basis and point to a promising avenue of intervention.

中文翻译：

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与年龄相关的损失的动态意识预测日常归纳推理性能的并发和后续变化

为了解决先前研究中的差距，我们检查了老年人对年龄相关变化 (AARC) 的认识与认知表现之间的日常内部关联。112 名 60-90 岁的成年人连续 9 天参加了在线每日日记研究。在第 1 天，他们报告了人口统计信息。在第 2 天到第 9 天，他们每天报告一次 AARC、主观年龄和压力源，并分别完成衡量记忆力（单词回忆）、感知速度（数字比较）和推理（字母系列）的三项任务。无条件多层次模型揭示了人的日常认知表现和日常 AARC 的显着波动。控制年龄、教育、健康和日常压力，与年龄相关的损失的日常意识与同一天的字母系列分数以及从一天到第二天的变化呈负相关。效果超过 AARC 增益和主观年龄。对衰老的动态、自然发生的感知可能会影响人内部日常推理能力的并发和后续变化，并指出一个有希望的干预途径。