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Articles 1 - 16 of 16
Full-Text Articles in Psychology
The Effects Of Category Overlap On Information-Integration And Rule-Based Category Learning, Shawn W. Ell, Gregory F. Ashby
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
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 …
Identifying Placebo Effects With Data From Clinical Trials, Anup Malani
Identifying Placebo Effects With Data From Clinical Trials, Anup Malani
Anup Malani
A medical treatment is said to have placebo effects if patients who are optimistic about the treatment respond better to the treatment. This paper proposes a simple test for placebo effects. Instead of comparing the treatment and control arms of a single trial, one should compare the treatment arms of two trials with different probabilities of assignment to treatment. If there are placebo effects, patients in the higher-probability trial will experience better outcomes simply because they believe that there is a greater chance of receiving treatment. This paper finds evidence of placebo effects in trials of antiulcer and cholesterol-lowering drugs.
From Faculty For Undergraduate Neuroscience: Encouraging Innovation In Undergraduate Neuroscience Education By Supporting Student Research And Faculty Development, Eric Wiertelak, J. C. Hardwick, M. Kerchner, B. Lom, J. J. Ramirez
From Faculty For Undergraduate Neuroscience: Encouraging Innovation In Undergraduate Neuroscience Education By Supporting Student Research And Faculty Development, Eric Wiertelak, J. C. Hardwick, M. Kerchner, B. Lom, J. J. Ramirez
Eric Wiertelak
No abstract provided.
Behavioral And Neurochemical Responses To Cocaine In Periadolescent And Adult Rats, Laura O'Dell
Behavioral And Neurochemical Responses To Cocaine In Periadolescent And Adult Rats, Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Extended Access To Nicotine Self-Administration Leads To Dependence: Circadian Measures, Withdrawal Measures, And Extinction Behavior In Rats, Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Corticotropin-Releasing Factor Within The Central Nucleus Of The Amygdala Mediates Enhanced Ethanol Self-Administration In Ethanol-Dependent Rats During Withdrawal., Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Biphasic Alterations In Serotonin1b (5-Ht1b) Receptor Function During Abstinence From Extended Cocaine Self-Administration, Laura O'Dell
Biphasic Alterations In Serotonin1b (5-Ht1b) Receptor Function During Abstinence From Extended Cocaine Self-Administration, Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Diminished Nicotine Withdrawal In Adolescent Rats: Implications For Vulnerability To Addiction, Laura O'Dell
Diminished Nicotine Withdrawal In Adolescent Rats: Implications For Vulnerability To Addiction, Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Unlimited Access To Heroin Self-Administration: Independent Motivational Markers Of Opiate Dependence, Laura O'Dell
Unlimited Access To Heroin Self-Administration: Independent Motivational Markers Of Opiate Dependence, Laura O'Dell
Laura Elena O'Dell
No abstract provided.
Effects Of Excitotoxic And Immunotoxic Lesions Of The Posterior Parietal Cortex On Attention, William M. Howe
Effects Of Excitotoxic And Immunotoxic Lesions Of The Posterior Parietal Cortex On Attention, William M. Howe
Dissertations, Theses, and Masters Projects
No abstract provided.
Word Association Tests Of Associative Memory And Implicit Processes: Theoretical And Assessment Issues, Alan W. Stacy, Susan L. Ames, Jerry L. Grenard
Word Association Tests Of Associative Memory And Implicit Processes: Theoretical And Assessment Issues, Alan W. Stacy, Susan L. Ames, Jerry L. Grenard
CGU Faculty Publications and Research
Word association is one of the most commonly used measures of association in cognitive science. These tests have been used to infer association parameters in normative studies, to derive cues and primes used in diverse paradigms (semantic priming, cued recall, illusory memory), to test implicit memory in experimental studies, and to suggest the operation of implicit processes in nonexperimental work. This chapter briefly outlines some of the historical routes and current controversies about association and summarizes basic cognitive research applying associative tests. The authors then describe benefits and limitations of the tests, as well as implications for theory and interventions …
Functional Connectivity In A Baseline Resting-State Network In Autism, Vladimir Cherkassky, Rajesh Kana, Timothy Keller, Marcel Just
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
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
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
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.