Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

PDF

Psychology

Theses/Dissertations

Memory

2002

Articles 1 - 2 of 2

Full-Text Articles in Entire DC Network

Working Memory In Schizophrenics And Older Adults : A Mediator For Episodic Memory Deficits?, Matthew W. Webster Jan 2002

Working Memory In Schizophrenics And Older Adults : A Mediator For Episodic Memory Deficits?, Matthew W. Webster

Master's Theses

The purpose of this study was to determine the role of working memory on episodic memory in older adults and adults with schizophrenia. This study included 15 adults with schizophrenia, 20 young adults without psychopathology, and 21 older adults without psychopathology. Storage working memory scores were greater than processing working memory scores in all groups. Young adults had the fewest problems with episodic and working memory, compared to older adults and adults with schizophrenia, who had similar deficits in both memory types. Speed of processing was found to be the greatest predictor of working memory capacity.


Relationship Between Neuropsychological Deficits And Cerebral Perfusion Abnormalities In Cocaine Abusers, Karen A. Tucker Jan 2002

Relationship Between Neuropsychological Deficits And Cerebral Perfusion Abnormalities In Cocaine Abusers, Karen A. Tucker

LSU Doctoral Dissertations

The purpose of this study was to investigate the relationships between the severity of cocaine/alcohol use, neuropsychological functioning, and cerebral blood flow abnormalities. Cocaine users (n = 60) and control subjects (n = 13) were administered a battery of neuropsychological tests that yielded the following factors: Attention/Executive Functioning, Memory, Simple Motor, and Sensorimotor. Participants were assessed for decreased cerebral blood flow with single-photon emission computed tomography (SPECT). Examination of group differences indicated that cocaine users performed significantly worse than controls on the Memory and Sensorimotor factors. The frequency/duration of cocaine use, alcohol use, and a combination of both substances ...