Remembrance of Things Future: Prospective Memory in Laboratory, Workplace, and Everyday Settings

Dismukes, R. Key · 2010 · Crossref

DOI: 10.1518/155723410x12849346788705

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Summary

This review paper by R. Key Dismukes addresses the cognitive phenomenon of prospective memory—the ability to remember to perform an intended action at a future time without external prompting. Motivated by the severe consequences of prospective memory failures in high-stakes environments, such as aviation accidents and medical errors, the author argues that this topic has been underrepresented in human factors research despite its critical role in workplace and everyday safety. The paper aims to summarize recent experimental research, critique the limitations of laboratory paradigms in capturing real-world complexity, and propose a research agenda to bridge the gap between controlled studies and naturalistic settings. The review synthesizes literature primarily derived from the Einstein-McDaniel laboratory paradigm, where participants perform an ongoing task while waiting for a specific cue to execute a deferred intention. The author categorizes prospective memory into event-based (triggered by a specific situation) and time-based (triggered by a specific time) intentions, noting that most experimental research focuses on the former. The paper examines factors influencing retrieval, finding that performance improves when cues are strongly associated with the intention, distinctive, or focal to the ongoing task. Conversely, high cognitive demands on the executive component of working memory typically impair prospective memory, unless the cue is highly salient or associative. A central focus of the review is the theoretical debate regarding the cognitive mechanisms of retrieval. The author contrasts the "automatic association" view, which posits that retrieval is reflexive and resource-free, with Smith’s "Preparatory and Attentional Memory Process" (PAM) theory, which argues that maintaining a preparatory attentional state consumes limited cognitive resources. The paper favors the "multiprocess theory," which reconciles these views by suggesting that retrieval can be automatic in some contexts but requires strategic monitoring and resource allocation in others, particularly when cues are non-focal or when multiple intentions are held. The author notes that laboratory findings, such as slowing in lexical decision tasks, may not fully translate to real-world scenarios where attention allocation is dynamic and intentions are maintained over longer periods. The significance of this work lies in its call for a more ecologically valid approach to prospective memory research. Dismukes concludes that existing experimental paradigms fail to capture the diversity of real-world tasks, such as resuming interrupted activities or switching attention between concurrent tasks. The paper advocates for expanding research to include workplace and everyday settings to better understand how factors like implementation planning and cue salience interact in natural environments. By identifying these gaps, the author proposes a research agenda aimed at developing effective countermeasures to reduce vulnerability to prospective memory failures, thereby enhancing safety and performance in human factors applications.

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• prospective memory interruptions