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Full-Text Articles in Social and Behavioral Sciences
The Acute Effects Of Nicotine And Exercise On Working Memory, Steven Guirguis
The Acute Effects Of Nicotine And Exercise On Working Memory, Steven Guirguis
Electronic Thesis and Dissertation Repository
Nicotine, an alkaloid found in tobacco leaves, has been used by humans for its psychoactive properties for centuries. Specifically, nicotine has been consistently shown to improve cognitive performance (Heishman, Kleykamp, & Singleton, 2010). Similar effects also have been shown with exercise (Chang, Labban, Gapin, & Etnier, 2012). The purpose of the present study was to examine whether a 20 min bout of moderate-intensity exercise enhances cognitive performance (working memory) as effectively as 4 mg of NICORETTE® gum in a non-smoker population. Twenty-three non-smokers (M age = 25.87; 13 female) underwent a three-week randomized counterbalanced procedure. The N-Back Task was used …
Category Learning In Older Adulthood: A Study Of The Shepard, Hovland, And Jenkins (1961) Tasks., Rahel Rabi, John Paul Minda
Category Learning In Older Adulthood: A Study Of The Shepard, Hovland, And Jenkins (1961) Tasks., Rahel Rabi, John Paul Minda
Brain and Mind Institute Researchers' Publications
Shepard, Hovland, and Jenkins (1961) examined the categorization abilities of younger adults using tasks involving single-dimensional rule learning, disjunctive rule learning, and family resemblance learning. The current study examined category learning in older adults using this well-known category set. Older adults, like younger adults, found category tasks with a single relevant dimension the easiest to learn. In contrast to younger adults, older adults found complex disjunctive rule-based categories harder to learn than family resemblance based categories. Disjunctive rule-based category learning appeared to be the most difficult for older adults to learn because this category set placed the heaviest demands on …