Journal
CURRENT PSYCHOLOGY
Volume 42, Issue 21, Pages 18333-18340Publisher
SPRINGER
DOI: 10.1007/s12144-022-03005-1
Keywords
Healthy ageing; Prospective memory; Lock checking; Executive functions
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In laboratory time-based prospective memory tasks, older adults perform worse than younger adults. Less frequent clock checking due to executive function problems may be responsible. This study aimed to investigate the role of clock checking in older adults' time-based prospective memory and whether executive functions would be associated with clock checking and time-based prospective memory. The results showed that time-based prospective memory declined with age due to less frequent clock checking. The link between executive functions and clock checking or time-based prospective memory was only found when not controlling for age.
In laboratory time-based prospective memory tasks, older adults typically perform worse than younger adults do. It has been suggested that less frequent clock checking due to problems with executive functions may be responsible. We aimed to investigate the role of clock checking in older adults' time-based prospective memory and to clarify whether executive functions would be associated with clock checking and consequently, with time-based prospective memory. We included 62 healthy older adults (62-85 years of age) and applied tasks of time-based prospective memory as well as of executive functions (i.e., inhibition, fluency, and working memory). We used mediation analysis to test whether time-based prospective memory declined with advancing age due to less frequent clock checking. In addition, we tested whether there would be an association between executive functions and clock checking or time-based prospective memory. Time-based prospective memory declined with advancing age due to less frequent clock checking within 30s prior to intention completion. We only found a link between executive functions and clock checking (or time-based prospective memory) when not controlling for age. Our results support the importance of clock checking for time-based prospective memory and add to the current literature that older adults' prospective memory declines because they are less able to adapt their clock checking. Yet, the reason why older adults are less able to adapt their clock checking still remains open. Our results do not indicate that executive function deficits play a central role.
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