No description available.

<p>Trettio kognitivt friska testpersoner (ålder M=31,9 år, utbildning M=16,3 år) testades med både WAIS-III (”Wechsler Adult Intelligence Scale - third edition”) och WAIS-III NI (”WAIS-III som neuropsykologiskt instrument”) för att undersöka eventuella skillnader i resultat mellan testen. Testpersonerna fick en signifikant ökning vid testning med WAIS-III NI jämfört med testning med WAIS-III på HIK (11,1), VIK (14,7), PIK (3,9), VF (11,4), POI (5,5), AMI (8,8), BK (1,6), LI (3,3), BL (0,6), AR (3,1), SR (1,1), IN (1,5) och FÖ (2,8). Det fanns en signifikant positiv korrelation mellan ålder och hur stor diskrepansen var mellan de olika versionerna för BL (r=0,379, p=0,039) och MA (r=0,413, p=0,023) samt en negativ korrelation mellan ålder och diskrepansen på FÖ (r=-0,422, p=0,020). Det fanns en signifikant negativ korrelation mellan utbildningsnivå och hur stor diskrepansen var mellan de olika versionerna av AR (r=-0,399, p=0,029).</p>

Trettio kognitivt friska testpersoner (ålder M=31,9 år, utbildning M=16,3 år) testades med både WAIS-III (”Wechsler Adult Intelligence Scale - third edition”) och WAIS-III NI (”WAIS-III som neuropsykologiskt instrument”) för att undersöka eventuella skillnader i resultat mellan testen. Testpersonerna fick en signifikant ökning vid testning med WAIS-III NI jämfört med testning med WAIS-III på HIK (11,1), VIK (14,7), PIK (3,9), VF (11,4), POI (5,5), AMI (8,8), BK (1,6), LI (3,3), BL (0,6), AR (3,1), SR (1,1), IN (1,5) och FÖ (2,8). Det fanns en signifikant positiv korrelation mellan ålder och hur stor diskrepansen var mellan de olika versionerna för BL (r=0,379, p=0,039) och MA (r=0,413, p=0,023) samt en negativ korrelation mellan ålder och diskrepansen på FÖ (r=-0,422, p=0,020). Det fanns en signifikant negativ korrelation mellan utbildningsnivå och hur stor diskrepansen var mellan de olika versionerna av AR (r=-0,399, p=0,029).

Studien syftar till att undersöka hur den svenska versionen av WAIS-IV förhåller sig till sin föregångare WAIS-III. Samma försökspersoner testades vid två olika tillfällen med såväl WAIS-IV som WAIS-III för att undersöka om det förelåg skillnader mellan försökspersonernas testresultat från de två olika versionerna. Resultatet visade att det för hela gruppen försökspersoner förelåg signifikanta positiva och starka korrelationer mellan jämförda index och deltest, vilket tyder på att jämförda index och deltest mäter liknande kognitiva konstrukt. Avseende index; IK Hela skalan (HIK) förelåg i samtliga grupper, oavsett administrationsordningen för de två versionerna av skalorna, en signifikant högre genomsnittlig IK-poäng vid testning med WAIS-III jämfört med den genomsnittliga IK-poäng som erhölls vid testning med WAIS-IV. Denna differens kan tolkas som en konsekvens av Flynn-effektens påverkan på försökspersonernas genomsnittliga poängresultat.

No description available.

The present study investigated the neuropsychological predictors of auditory/verbal and visual/written arithmetic performance in a large sample of children with learning disorders. In addition, the efficacy of a cognitive based arithmetic problem solving model (Dinnel, Glover, & Halpain, in press; Dinnel, Glover, & Ronning, 1984) in accounting for neuropsychological functioning in arithmetic performance was considered. Subjects were from a small midwestern school district, and were identified as learning disabled in accord with state (i.e., Rule S-1) and federal guidelines (i.e., PL-94-142). Specifically, subjects' scores on the Halstead-Reitan Neuropsychological Battery (HRNB) (Reitan, 1969) for older children and the Wechsler Intelligence Scale for Children-Revised (WISC-R) (Wechsler, 1974) were used to predict performance on the Wide Range Achievement Test (WRAT) Arithmetic subtest, and WISC-R Arithmetic subtest. Analyses were conducted with criterion measures considered separately and as a composite. In an attempt to examine the utility of the Dinnel et al., (in press; 1984) model, a simple index was formed using the criterion measures. This index was then predicted using the HRNB and WISC-R variables. Neuropsychological variables were found to account for some 31%, and 36% of the variability in visual/written and auditory/verbal arithmetic performance, respectively. However, neuropsychological variables accounted for some 87% of the shared variance when arithmetic measures were considered as a linear composite. Neuropsychological variables predicted a mere 12% of the variability associated with the index designed to test the Dinnel et al. (in press; 1984) arithmetic problem solving model. These data offered some support to Dinnel and others' (Dinnel et al., in press; 1984) formulations accounting for arithmetic performance under visual/stimulus conditions. However, the present findings indicated a more complex neuropsychological underpinning for overall arithmetic problem solving. Moreover, the neuropsychological constructs predicting arithmetic scores varied as a function of the stimulus/performance modes required for problem solving.Auditory-verbal attention and short-term memory, remote verbal memory, symbolic language integration, mental flexibility, and nonverbal abstract reasoning were the common neuropsychological constructs underpinning both auditory/verbal and visual/written arithmetic performance. Verbal facility, verbal abstract reasoning, nonverbal short term memory, and nonverbal concrete concept formation were uniquely implicated in auditory/verbal arithmetic performance. Visual/written arithmetic performance was uniquely related to nonverbal attention and intermediate nonverbal memory functions. In overview, it would seem that neuropsychological measures would be clinically useful in identifying deficits underlying poor arithmetic performance. / Department of Educational Psychology

Thesis (Ph.D.)--University of Tulsa, 1993. / Includes bibliographical references (leaves 83-89).

Thesis (Ph. D.)--University of California, San Diego, 2000. / Vita. Includes bibliographical references (leaves 154-163).

Thesis (Ph. D.)--Illinois State University, 2001. / Title from title page screen, viewed March 14, 2006. Dissertation Committee: Mark E. Swerdlik (chair), David L. Wodrich (co-chair), Valeri Farmer-Dougan, Alvin House. Includes bibliographical references (leaves [106]-117) and abstract. Also available in print.

Performance on the Spatial Span subtest of the Wechsler Memory Scale has been viewed as an indicator of working memory and visuospatial processing. A number of factors including age and gender have been posited to effect performance on Spatial Span by older adults. The current study examined the impact of various forms of cognitive impairment and severity of impairment on Spatial Span performance. Five hundred thirty-eight individuals between the ages of 65 and 89 were evaluated in a university memory disorders clinic using a battery of neuropsychological tests that included Spatial Span. Participants were grouped by consensus diagnosis into type of cognitive impairment (Alzheimer's disease, vascular disease, amnestic mild cognitive impairment or non-amnestic mild cognitive impairment) or cognitively normal. As expected, an increase in severity of impairment results in a decrease in Spatial Span Total Score. Other findings included a weak relationship between age and Spatial Span Total Score. Gender, as well as age, did not fully account for the decline in Spatial Span Total Score. Spatial Span Forward score was not as good a predictor of severity in that reduction in score for Spatial Span Forward remains relatively stable regardless of level of impairment. Spatial Span Backward performance was found to be more sensitive to severity. No significant differences were found between performance of Alzheimer's disease and vascular disease suggesting they share similar deficit patterns with regard to the cognitive abilities measured by the Spatial Span subtest. A comparison between those diagnosed with mild cognitive impairment and individuals without such a diagnosis showed no significant difference suggesting that visuospatial processes are not affected early in the dementing process.