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Full-Text Articles in Psychology
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 …
Accuracy Matters For The Benefits Of Sleep After Retrieval Practice, Steven Dessenberger
Accuracy Matters For The Benefits Of Sleep After Retrieval Practice, Steven Dessenberger
Arts & Sciences Electronic Theses and Dissertations
Previous research suggests that while sleep and retrieval practice can each improve memory on their own, their benefits cannot be combined to produce an additive effect unless feedback is given during the initial test. These previous findings would seem to support a retrieval-as-consolidation of the testing effect, which states that the benefits of retrieval are the result of memory consolidation, a process that normally occurs during the sleep cycle. The present study sought to determine whether the retrieval-as-consolidation account held true when initial test accuracy was considered as a factor. Using foreign language word pairs, we examined the combined effects …