A fresh pair of eyes on prospective memory monitoring

Shelton, Jill Talley; Christopher, Eddie A. · 2016 · OpenAlex-citations

DOI: 10.3758/s13421-016-0601-3

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Summary

This study addresses the limitations of traditional behavioral measures used to assess strategic monitoring in prospective memory (PM), which is the ability to remember to perform a future intention. Previous research relied on "ongoing-task costs" (slowing in a concurrent task) as a proxy for monitoring, but this metric is imprecise and may reflect metacognitive adjustments or response conflicts rather than genuine attentional shifts. The authors aimed to develop a more direct, psychophysiological measure of overt strategic monitoring using eye-tracking technology. Specifically, they investigated how environmental contextual cues interact with cognitive mechanisms to trigger monitoring for PM targets, particularly in scenarios where the PM target appears in a different visual location than the ongoing task, mimicking real-world demands. The researchers employed a 2 × 2 mixed-factor design with 52 undergraduate participants, randomly assigned to either an experimental condition (with a PM demand) or a control condition (no PM demand). Participants performed a continuous "living-count" task, counting living objects in visual arrays. Simultaneously, a separate region of the screen displayed images changing every three seconds; participants in the experimental condition were instructed to say "hit" when a specific target (an apple) appeared in this region. To test cue-driven monitoring, semantically related cues (e.g., bananas) or unrelated cues (e.g., ducks) were embedded in the ongoing task on specific trials. Eye-tracking data recorded fixations on the PM target region, allowing the authors to quantify total monitoring and cue-driven monitoring (fixations on the target region immediately following a cue). The results demonstrated that participants in the experimental condition fixated on the PM target region significantly more often than those in the control condition, confirming overt strategic monitoring. Crucially, cue-driven monitoring was observed only in the experimental group: participants were significantly more likely to shift their gaze to the PM target region after fixating on a semantically related cue compared to an unrelated cue. Control participants showed no such difference. Furthermore, total monitoring activity was positively correlated with PM performance, indicating that the observed monitoring was functionally related to successful intention retrieval. The ongoing-task performance showed a marginally significant decline in the experimental group, consistent with attentional resource allocation. The findings provide robust evidence that subtle, semantically related environmental cues can trigger the retrieval of future intentions and initiate overt strategic monitoring. By isolating the PM target from the ongoing task, the study validated a new paradigm that directly measures attentional shifts, overcoming ambiguities associated with traditional ongoing-task cost measures. This approach supports the dynamic multiprocess framework, suggesting that contextual cues play a critical role in prompting preparatory attention. The study highlights the utility of eye-tracking in cognitive psychology for precisely characterizing the temporal onset and nature of strategic monitoring processes in prospective memory.

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• prospective memory interruptions