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Full-Text Articles in Psychology
Understanding Task Interference In Prospective Memory Using On-Line Probes: Strategic Delay Or Limited-Capacity Monitoring?, Francis T. Anderson
Understanding Task Interference In Prospective Memory Using On-Line Probes: Strategic Delay Or Limited-Capacity Monitoring?, Francis T. Anderson
Arts & Sciences Electronic Theses and Dissertations
In prospective memory (PM) research, a common finding is that people are generally slower to respond to a given ongoing task (OT) when they have to perform a PM task concurrently, as compared to performing the OT alone. Multiprocess theory claims that this slowing, termed task interference, is indicative of monitoring processes. Monitoring is thought to be cognitively demanding and heavily reliant on working memory, as people hold their intention in mind and look for features relevant to the PM task. PM decision control (PMDC) theory, instead, proposes that task interference reflects a strategic and intentional delay strategy. To address …
Neural Mechanisms Of Cognitive Individual Difference: An Investigation Of The Human Connectome Project, Shelly Renee Cooper
Neural Mechanisms Of Cognitive Individual Difference: An Investigation Of The Human Connectome Project, Shelly Renee Cooper
Arts & Sciences Electronic Theses and Dissertations
Considering individual differences in task activation functional magnetic resonance imaging (t-fMRI) can be challenging because they may arise from variability in activity in brain regions, in the tasks themselves, or some combination thereof. Delineating sources of between-subjects variance is particularly important for cognitive control where task goals are at the forefront. Here we applied structural equation modeling (SEM) to the Human Connectome Project to examine if activity could be partitioned into separable brain and task individual difference dimensions. A series of SEMs were defined with varying numbers of latent factors, where the inputs were parcels of two cognitive control-related brain …
Quality Of Sleep, Stress, And Exercise: Effects Of Environmental And Lifestyle Factors On Spatial Navigation In Older Adults, Hannah Maybrier
Quality Of Sleep, Stress, And Exercise: Effects Of Environmental And Lifestyle Factors On Spatial Navigation In Older Adults, Hannah Maybrier
Arts & Sciences Electronic Theses and Dissertations
Introduction: With increasing age, many adults experience reduced spatial navigation ability, with the most prominent reductions in tasks dependent on the hippocampus. Hippocampal dysfunction may be linked to age-related increases in sleep fragmentation, which results in reduced neurogenesis and long-term potentiation. This project aims to determine if age-related reductions in hippocampal-dependent navigation ability and strategy selection are mediated by impaired sleep. Further, we propose that the effects of sleep on navigation are moderated by psychological stress and physical activity. Methods: 36 older (m: 70, sd: 7) and 33 younger (m: 20, sd: 1.5) adults recorded one week of sleep via …
About Face: Seeing The Talker Improves Spoken Word Recognition But Increases Listening Effort, Violet Brown
About Face: Seeing The Talker Improves Spoken Word Recognition But Increases Listening Effort, Violet Brown
Arts & Sciences Electronic Theses and Dissertations
It is widely accepted that seeing a talker improves a listener’s ability to understand what a talker is saying in background noise (e.g., Erber, 1969; Sumby & Pollack, 1954). The literature is mixed, however, regarding the influence of the visual modality on the listening effort required to recognize speech (e.g., Fraser, Gagné, Alepins, & Dubois, 2010; Sommers & Phelps, 2016). Here, we present data showing that even when the visual modality robustly benefits recognition, processing audiovisual speech can still result in greater cognitive load than processing speech in the auditory modality alone. We show using a dual-task paradigm …