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Cognitive Psychology Commons

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Articles 1 - 9 of 9

Full-Text Articles in Cognitive Psychology

Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine Dec 2006

Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine

Psychology Faculty Publications

Cognitive, as well as physiological, sex differences exist in young adult rats under both basal conditions and following chronic stress; however, few studies have examined whether sex differences remain in aged subjects and whether responses to stress are altered. We compared aged male and female Fischer 344 rats (21.5 months at testing) without stress and when given 21 days of restraint for 6 h/day on locomotion, anxiety-related behaviors, object recognition (non-spatial memory), object placement (spatial memory), body weight and serum steroid hormone levels. Control (unstressed) females had lower levels of estradiol and testosterone and higher corticosterone than males, and stress …


The Effects Of Category Overlap On Information-Integration And Rule-Based Category Learning, Shawn W. Ell, Gregory F. Ashby Aug 2006

The Effects Of Category Overlap On Information-Integration And Rule-Based Category Learning, Shawn W. Ell, Gregory F. Ashby

Psychology Faculty Scholarship

Three experiments investigate whether the amount of category overlap constrains the decision strategies used in category learning, and whether such constraints depend on the type of category structures used. Experiments 1 and 2 used a category learning task requiring perceptual integration of information from multiple dimensions (information-integration task) and Experiment 3 used a task requiring the application of an explicit strategy (rule-based task). In the information-integration task, participants used perceptual-integration strategies at moderate levels of category overlap, but explicit strategies at extreme levels of overlap – even when such strategies were sub-optimal. In contrast, in the rule-based task, participants used …


Focal Putamen Lesions Impair Learning In Rule-Based, But Not Information-Integration Categorization Tasks, Shawn W. Ell, Natalie L. Marchant, Richard B. Ivry Apr 2006

Focal Putamen Lesions Impair Learning In Rule-Based, But Not Information-Integration Categorization Tasks, Shawn W. Ell, Natalie L. Marchant, Richard B. Ivry

Psychology Faculty Scholarship

Previous research on the role of the basal ganglia in category learning has focused on patients with Parkinson’s and Huntington’s Disease, neurodegenerative diseases frequently accompanied by additional cortical pathology. The goal of the present study was to extend this work to patients with basal ganglia lesions due to stroke, asking if similar changes in performance would be observed in patients with more focal pathology. Patients with basal ganglia lesions centered in the putamen (6 left side, 1 right side) were tested on rule-based and information-integration visual categorization tasks. In rule-based tasks, it is assumed that participants can learn the category …


Examining The Direction Of Imagery And Self-Talk On Dart-Throwing Performance And Self Efficacy, Jennifer Cumming, Sanna M. Nordin, Robin Horton, Scott Reynolds Jan 2006

Examining The Direction Of Imagery And Self-Talk On Dart-Throwing Performance And Self Efficacy, Jennifer Cumming, Sanna M. Nordin, Robin Horton, Scott Reynolds

Jennifer Cumming

The study investigated the impact of varying combinations of facilitative and debilitative imagery and self-talk (ST) on self-effi cacy and performance of a dart-throwing task. Participants (N = 95) were allocated to 1 of 5 groups: (a) facilitative imagery/facilitative ST, (b) facilitative imagery/debilitative ST, (c) debilitative imagery/facilitative ST, (d) debilitative imagery/debilitative ST, or (e) control. Mixed-design ANOVAs revealed that performance, but not self-effi - cacy, changed over time as a function of the assigned experimental condition. Participants in the debilitative imagery/debilitative ST condition worsened their performance, and participants in the facilitative imagery/facilitative ST condition achieved better scores. These fi ndings …


Effects Of Excitotoxic And Immunotoxic Lesions Of The Posterior Parietal Cortex On Attention, William M. Howe Jan 2006

Effects Of Excitotoxic And Immunotoxic Lesions Of The Posterior Parietal Cortex On Attention, William M. Howe

Dissertations, Theses, and Masters Projects

No abstract provided.


Functional Connectivity In A Baseline Resting-State Network In Autism, Vladimir Cherkassky, Rajesh Kana, Timothy Keller, Marcel Just Dec 2005

Functional Connectivity In A Baseline Resting-State Network In Autism, Vladimir Cherkassky, Rajesh Kana, Timothy Keller, Marcel Just

Marcel Adam Just

No abstract provided.


Brain Correlates Of Discourse Processing: An Fmri Investigation Of Irony And Conventional Metaphor Comprehension, Zohar Eviatar, Marcel Adam Just Dec 2005

Brain Correlates Of Discourse Processing: An Fmri Investigation Of Irony And Conventional Metaphor Comprehension, Zohar Eviatar, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Sentence Comprehension In Autism: Thinking In Pictures With Decreased Functional Connectivity, Rajesh K. Kana, Timothy A. Keller, Vladimir L. Cherkassky, Nancy J. Minshew, Marcel Adam Just Dec 2005

Sentence Comprehension In Autism: Thinking In Pictures With Decreased Functional Connectivity, Rajesh K. Kana, Timothy A. Keller, Vladimir L. Cherkassky, Nancy J. Minshew, Marcel Adam Just

Marcel Adam Just

No abstract provided.


Neural Basis Of Dyslexia: A Comparison Between Dyslexic And Non-Dyslexic Children Equated For Reading Ability, Fumiko Hoeft, Arvel Hernandez, Glenn Mcmillon, Heather Taylor-Hill, Jennifer L. Martindale, Ann Meyler, Timothy A. Keller, Wai Ting Siok, Gayle K. Deutsch, Marcel Adam Just, Susan Whitfield-Gabrieli, John D. E. Gabrieli Dec 2005

Neural Basis Of Dyslexia: A Comparison Between Dyslexic And Non-Dyslexic Children Equated For Reading Ability, Fumiko Hoeft, Arvel Hernandez, Glenn Mcmillon, Heather Taylor-Hill, Jennifer L. Martindale, Ann Meyler, Timothy A. Keller, Wai Ting Siok, Gayle K. Deutsch, Marcel Adam Just, Susan Whitfield-Gabrieli, John D. E. Gabrieli

Marcel Adam Just

No abstract provided.