Research suggests that individuals with lower working memory have difficulty remembering to fulfill delayed intentions. The current study examined whether the ability to offload intentions onto the environment mitigated these deficits. Participants (N = 268) completed three versions of a delayed intention task with and without the use of reminders, along with three measures of working memory capacity. Results showed that individuals with higher working memory fulfilled more intentions when having to rely on their own memory, but this difference was eliminated when offloading was permitted. Individuals with lower working memory chose to offload more often, suggesting that they were less willing to engage in effortful maintenance of internal representations when given the option. Working memory was not associated with metacognitive confidence or optimal offloading decisions based on point value. These findings suggest offloading may help circumvent capacity limitations associated with maintaining and remembering delayed intentions.
Prospective memory (PM) refers to the ability to remember to complete a task at the appropriate moment in the future. Past research has found reminders can improve PM performance in both laboratory and naturalistic settings, but few projects have examined the circumstances when reminders are most beneficial. Three experiments in the present study tested the effect of reminders in an event-based PM task under different cognitive loads. In Experiments 1 (specific targets) and 2 (nonspecific targets), load was manipulated by having participants respond to a single (low load) or multiple (high load) targets. In Experiment 3, the association between pairs was manipulated by presenting strongly associated pairs (low load) or weakly associated pairs (high load). Half of the participants in each experiment received reminders whereby PM target information was placed at the top of the computer screen. Across all three experiments, it was found that the benefit of reminders was greater under high load than low load conditions. Importantly, the improvements in PM from reminders generally occurred without any additional cost to ongoing task performance and without any reduction of retrospective memory for the targets at the end of the experiment. Together these results suggest that reminders can be beneficial for reducing PM failures, particularly under high load, without the potential downside of increased effort expenditure.
Prospective memory (PM) refers to the ability to remember to complete a task at the appropriate moment in the future. Past research has found reminders can improve PM performance in both laboratory and naturalistic settings, but few projects have examined the circumstances when and what types of reminders are most beneficial. Three experiments in the present study tested the influence of reminders in an event-based PM task under different cognitive loads. An additional study examined how effective reminders of different types were. In Experiments 1 (specific targets) and 2 (nonspecific targets), load was manipulated by having participants respond to a single (low load) or multiple (high load) targets. In Experiment 3, the association between target-action word pairs was manipulated by presenting strongly associated pairs (low load) or weakly associated pairs (high load). Experiment 4 used target-action word pairs and varied the type of reminder. Participants in the reminder conditions had target (Experiments 1 and 2), target and action (Experiment 3) or target and/or action (Experiment 4) reminders listed at the top of the screen throughout the PM task. Across the first 3 experiments, it was found that the benefit of reminders was greater under high load than low load conditions. Experiment 4 found that target-action reminders improved PM, while target-only or action-only reminders did not. Importantly, the improvements in PM from reminders occurred without cost to ongoing task performance. Together these results suggest that reminders can be beneficial for reducing PM failures, particularly under high load, without the potential downside of increased effort expenditure.
Monitoring the environment for target events that trigger prospective memory (PM) retrieval requires cognitive resources, reflected by costs to ongoing task performance (i.e., worse accuracy and/or slower response times). Strategic monitoring refers to the use of context to engage or disengage monitoring when a PM target is anticipated or unanticipated. Laboratory strategic monitoring studies have found mixed results as to whether context awareness improves PM performance. The present study employed a meta-analytic technique to assess the overall effect of context awareness on PM performance and ongoing task metrics of strategic monitoring. Overall, context awareness improved PM performance when the target was anticipated and improved ongoing task performance (speed and accuracy) when the target was not anticipated. Moderator analyses revealed the degree of slowing in anticipated contexts predicted how much context awareness improved PM performance. However, the benefits to PM performance from context awareness differed by the type of procedure used. PM performance was improved when context changes could be predicted during blocked or proximity procedures, but not when context varied randomly in trial-level procedures. These results provide insights into the mechanisms underlying strategic monitoring and guidance for researchers on which procedures to be use depending on the theory-driven questions.
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