Prospective Memory Development Across the Lifespan

Zuber, Sascha; Kliegel, Matthias · 2020 · OpenAlex-citations

DOI: 10.1027/1016-9040/a000380

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Summary

This review paper addresses the development of prospective memory (PM)—the ability to remember to perform planned intentions in the future—across the entire lifespan. Motivated by the societal need to maintain autonomy and well-being in aging populations, the authors aim to delineate PM trajectories, identify influencing factors, and propose a new integrative framework. The study focuses on shifting the theoretical perspective from traditional memory processes to the role of executive functioning in PM development. The authors conducted a comprehensive literature review of lifespan studies published up to December 2018, searching databases such as Web of Science and PubMed. They included studies covering at least three age ranges (childhood through old adulthood) involving typically developing individuals. To enable cross-study comparison, raw accuracy scores were standardized relative to the best-performing age group in each study. The analysis examined task-inherent factors (e.g., cue focality, task type) and non-cognitive factors (e.g., setting, stereotype threat) to understand their impact on PM performance. The results indicate that PM development follows an inverted U-shaped curve, peaking around age 20 and declining thereafter. The authors distinguish between event-based tasks (focal vs. nonfocal cues) and time-based tasks, noting that nonfocal and time-based tasks are more resource-demanding and show larger age-related deficits. A key finding is the "Age Prospective Memory Paradox," where older adults perform worse in laboratories but equally well or better in naturalistic settings. The authors attribute laboratory deficits partly to age-related stereotype threat, which can be mitigated by instructions that do not highlight memory demands. The paper proposes a new integrative framework arguing that PM retrieval and execution rely heavily on executive functions—specifically updating, inhibition, and shifting—rather than retrospective memory alone. Updating is required for all PM types to maintain intentions; inhibition is critical for focal tasks to suppress ongoing task responses; and shifting is essential for nonfocal tasks to monitor for cues. Time-based tasks demand additional updating resources for time monitoring. The authors conclude that age-related PM decline is driven by the deterioration of these executive resources and frontal brain efficiency. Practically, they suggest interventions should focus on reducing strategic demands (e.g., using implementation intentions or salient cues) or training executive monitoring strategies, rather than traditional mnemonic techniques, to support healthy aging.

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• prospective memory interruptions