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Dynamic awareness of age-related losses predict concurrent and subsequent changes in daily inductive reasoning performance.

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. Statement of contribution What is already known on this subject? Experimentally induced negative age stereotypes are detrimental to cognitive performance in older adults. Naturally occurring perceptions of ageing are associated with changes in cognition in older adults across years. What does this study add? Dynamic, naturally occurring awareness of daily age-related losses predicts within-person decreases in inductive reasoning on the same day and decreases from one day to the next. The significant effects of AARC losses hold over and above AARC gains and subjective age.