Prospective memory and ageing: Is task importance relevant?

Memory & Cognition, 2000

Existing laboratory paradigms of prospective memory instruct subjects to remember to perform a single, isolated act at an appropriate point in the experiment. These paradigms do not completely capture many everyday complex prospective memory situations in which a series or set of delayed actions is planned to be executed in some subsequent period of time. Weadapted a laboratory paradigm within which to study these prospective memory processes, and we investigated age-related influences on these prospective memory processes. Age-related declines were found in the planning, initiation, and execution of the set of tasks. In contrast, there were no age differences in plan retention or in the fidelity with which the plan was performed.

European Journal of Ageing, 2013

The present study aimed at investigating agerelated differences in prospective memory performance using a paradigm with high ecological validity and experimental control. Thirty old and 30 young adults completed the Dresden Breakfast task; a meal preparation task in the lab that comprises several subtasks including event-and time-based prospective memory tasks. Participants were required to plan how to perform the task. Results showed that young adults outperformed old adults: they completed more subtasks, showed better event-and time-based prospective memory performance and planning quality. In contrast, old adults adhered to their plans more closely than young adults. Further exploratory gender-specific analyses indicated that old women did not differ from young men in time-based prospective memory performance, general task performance and time monitoring in contrast to old men. Possibly, differences in experience in breakfast preparation might account for these differential findings.

European Journal of Ageing, 2009

This study investigated age effects in prospective memory performance within older adults. The first aim was to explore this issue by examining event-and timebased prospective memory performance in two age groups: young-old (60-75 years) and old-old adults (76-90 years). Moreover, this study for the first time investigated whether forming implementation intentions could be used to improve prospective memory in young-old and old-old adults. Results showed a general effect of age in prospective memory performance for both task types. In addition, no general effect of implementation intentions in prospective memory performance across both task types and age groups was found. However, testing implementation intention effects separately for both age groups revealed that the formation of implementation intentions enhanced prospective memory only for the young-old adults, but did not substantially affect the performance in the time-based task and even impaired it in the event-based task for the old-old adults. Findings indicate that the formation of implementation intentions might be a powerful memory strategy for young-old adults, but not for the very old.

Journal of Cognition and Development

According to the executive framework of prospective memory (PM), age-related differences in PM performance are mediated by agerelated differences in executive functioning (EF). The present study further explored this framework by examining which specific components of EF are associated with PM differences between and within three age groups. A group of children (7-9 years; N = 108), adolescents (12-14 years; N = 112), and adults (17-23 years; N = 106) performed focal-and non-focal event-based PM (EBPM) tasks, a time-based PM (TBPM) task, and tasks measuring EF components. Differences between age groups in focal EBPM, non-focal EBPM, and TBPM performance were mediated by, respectively, differences in interference control and response inhibition, performance on the ongoing task, and differences in working memory and response inhibition. However, within-age group analyses only revealed WM updating as significant predictor of TBPM performance in the adolescent group. These results support and further qualify the executive framework of PM. The differences in outcome dependent on the examined age range might be important for explaining mixed results of previous studies regarding the precise EF components underlying age-related PM task performance differences. Prospective memory (PM) refers to the ability to realize a delayed intention by "remembering to remember" to perform a future action (Ellis, 1996). PM is crucial for many daily-life tasks and involves different phases, specifically, the formation, retention, initiation, and execution of the intention (Kliegel, Martin, McDaniel, & Einstein, 2002). PM has a retrospective component, remembering what specific action to perform, next to a prospective component, remembering that a specific action must be performed (Einstein & McDaniel, 1996). In addition, a distinction can be made between event-based PM (EBPM) and time-based PM (TBPM), which refers to the type of cue that triggers execution of the intended action (Brandimonte, Einstein, & McDaniel, 1996). In EBPM, this concerns an external cue, such as when remembering to buy bread upon passing a bakery. In TBPM, the intention has to be realized at a specific time or period of time, such as to remember to take medicine in time. PM and executive functions According to an influential theory in the field, the multiprocess theory, PM tasks may require relatively automatic or strategic processes, depending, among other factors, on features of the

Aging, Neuropsychology, and Cognition, 2009

A challenge in habitual prospective memory tasks (e.g., taking medication) is remembering whether or not one has already performed the action. Einstein, McDaniel, Smith, and Shaw (1998, Psychological Science, 9, 284) showed that older adults were more likely to incorrectly repeat an action on habitual prospective memory tasks. Extending this research, we (a) biased participants either toward repetition or omission errors, (b) investigated whether performing a more complicated motor action can reduce repetition errors for older adults, and (c) examined participants' resource allocation to the prospective memory task. Older adults committed more repetition errors than younger adults regardless of biasing instructions when ongoing task demands were challenging (Experiment 1). Performing the more complex motor action, however, reduced repetition errors for older adults. Further, when the ongoing task was less demanding, older adults' repetition errors declined to levels of younger adults (Experiment 2). Consistent with this finding, the resource allocation profiles suggested that older participants were monitoring their output (prospective memory execution) in each trial block.

Journal of Psychology & Psychotherapy, 2013

Smith posited that successful prospective retrieval requires the intervention of resource-demanding attentional monitoring processes. According to this perspective, the ongoing task and the PM task would be competing for limited resources, and therefore the deficits associated with aging in PM should generally appear given that older adults will presumably try to maintain performance of the ongoing task to a reasonable extent, and thus their prospective remembering will be compromised . This is how the absence of age-related PM deficits can be explained: by adducing that participants try to maintain

Psychology and …, 2000

Retrieved intentions often cannot be performed immediately and must be maintained until there is an opportunity to perform them. In 3 experiments, on seeing a target event, younger and older participants were to withhold an action until they encountered the appropriate phase of the experiment. When initial retrieval was made facile by the use of a salient retrieval cue, the age-related decrements were often dramatic, even over unfilled delay intervals as brief as 10 s (Experiments 1 and 2). When initial retrieval was difficult, older adults showed no forgetting over the retention interval (Experiment 3). Several theoretical perspectives were offered as explanations for the age differences observed with salient retrieval cues, including those that focus on age differences in metamemory, the degree to which plans are reformulated, and the ability to nonstrategically maintain current concerns in working memory.

Aging, Neuropsychology, and Cognition, 2007

Two experiments examined the puzzling variation in the age-related patterns for eventbased prospective memory tasks. Both experiments involved a famous faces ongoing task with a feature of the famous face as the target for the prospective memory task. In Experiment 1, a substantial age deficit was found on the prospective memory task when the cue was nonfocal (wearing glasses) to the ongoing task, replicating previous research, but this deficit was significantly reduced with a focal cue (first name John). In Experiment 2, the prospective memory cue (wearing glasses) was held constant and the demands of the ongoing task of naming faces were varied. The substantial age differences found with a nonfocal cue were eliminated when the ongoing task was made less challenging. The findings help reconcile the divergent age-related findings reported in the literature.

Psychology and Aging, 1997

The magnitude of age differences on event-and time-based prospective memory tasks was investigated in 2 experiments. Participants performed a working memory task and were also required to perform either an event-or time-based prospective action. Control participants performed either the working memory task only or the prospective memory task only. Results yielded age differences on both prospective tasks. The age effect was particularly marked on the time-based task. Performance of the event-based prospective task, however, had a higher cost to performance on the concurrent working memory task than the time-based task did, suggesting that event-based responding has a substantial attentional requirement. The older adults also made a significant number of time-monitoring errors when time monitoring was their sole task. This suggests that some time-based prospective memory deficits in older adults are due to a fundamental deficit in time monitoring rather than to prospective memory.

Quarterly journal of experimental psychology (2006), 2015

Efficient intention formation might improve prospective memory by reducing the need for resource-demanding strategic processes during the delayed performance interval. The present study set out to test this assumption and provides the first empirical assessment of whether imagining a future action improves prospective memory performance equivalently at different stages of the adult lifespan. Thus, younger (n = 40) and older (n = 40) adults were asked to complete the Dresden Breakfast Task, which required them to prepare breakfast in accordance with a set of rules and time restrictions. All participants began by generating a plan for later enactment; however, after making this plan, half of the participants were required to imagine themselves completing the task in the future (future thinking condition), while the other half received standard instructions (control condition). As expected, overall younger adults outperformed older adults. Moreover, both older and younger adults benefi...