Prospective memory refers to the ability to remember to carry out delayed intentions, more precisely, to remember to initiate and execute an intended action at some point in the future. The development and progression of prospective memory across the lifespan is still heavily under debate. Only few studies have so far investigated prospective memory development in childhood, revealing an inconsistent pattern. In adulthood, studies in the laboratory and naturalistic studies showed paradoxical results with age deficits in the laboratory and age benefits in naturalistic tasks. Up to now, no conceptual model has been suggested to guide research on prospective memory development across the lifespan. Thus, the present work examined the effect of central factors from the multiprocess framework (McDaniel & Einstein, 2000) on the development of prospective memory in four different age-groups: pre-schoolers, school-age children, young and old adults.
The first study explored the role of task motivation in age differences in prospective memory performance across the pre-school age-range. No main effect of age or motivation in prospective memory performance was found, yet a significant interaction, indicating that for younger children motivation or task importance may help allocating the available resources to the task elements of interest.
Evidence from the second study indicated that 9-10 year old school children outperform 6-7 year old school children on a measure of prospective memory, and that retrieval-based factors (ongoing task absorption, cue salience, cue focality) systematically influenced performance. Of particular importance for possible developmental mechanisms was the finding of an age x cue focality interaction, suggesting that age effects may be modulated by cue focality.
The third study examined the effect of task setting in a laboratory procedure and the effect of motivation in a naturalistic procedure on prospective memory performance in young and older adults. Results from the laboratory prospective memory procedure revealed significant age-related decline for irregular tasks but not for regular and focal tasks. In addition, in the naturalistic procedure, the age benefit was eliminated when young adults were motivated by incentives.
Results from the present work indicated that already pre-school age children were able to remember to perform intended actions and this ability increased across school-age. In adulthood, the results revealed a decline with age on a pure performance level. Yet, older adults may be able to compensate for basic cognitive impairments if task conditions reduce the need for controlled attention. Furthermore, the present work suggest, that factors of the multiprocess framework may indeed affect age-differences in prospective memory performance throughout the lifespan, as cue focality and task importance were related to prospective memory development in children and adults. Thus, the multiprocess approach might serve as foundation for a lifespan theory of the development of prospective memory.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:25152 |
| Date | 28 October 2009 |
| Creators | Aberle, Ingo |
| Contributors | Kliegel, Matthias, Kirschbaum, Clemens, Technische Universität Dresden |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:doctoralThesis, info:eu-repo/semantics/doctoralThesis, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
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