A comparative study of the performance of English and Xhosa speaking children on the Wechsler Intelligence Scale for Children-Revised (WISC-R)
- Authors: Runciman, Carey Lynn
- Date: 1996 , 2013-10-03
- Subjects: Wechsler Intelligence Scale for Children -- Cross-cultural studies , Children -- Intelligence testing , Psychological tests -- Cross-cultural studies , Educational tests and measurements -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3150 , http://hdl.handle.net/10962/d1007467 , Wechsler Intelligence Scale for Children -- Cross-cultural studies , Children -- Intelligence testing , Psychological tests -- Cross-cultural studies , Educational tests and measurements -- South Africa
- Description: The purpose of this study was to compare the WISC-R subtest score scatter patterns and obtain preliminary normative data on the WISC-R Adjunctive tests (Digit Span Forward; Digit Span Backward; Digit Supraspan; Coding Immediate Recall and Coding Delayed Recall) on a non-clinical population of South African English (n= 15) and Xhosa (n= 12) speaking, standard six children, studying in English medium schools. Tests were administered to 27 subjects, both male (n=19) and female (n=8), with a mean age of 14.1 years (range = 13.3-15.3). The results show that White English speaking children outperform Black Xhosa speaking children on Verbal, Performance and Full Scale IQs and all subtests, but that these differences tended to disappear when Full Scale IQ and school grade average were controlled for. No subtest score scatter was present for either group although more specific test items appeared to be more difficult for Xhosa speaking subjects and may have contributed to generally lowered scores. Results suggest that caution must be employed in assigning Xhosa speaking South African children to absolute IQ categories. However, the WISC-R has validity for diagnostic use on both White English speaking and Black Xhosa speaking South African children as there was no evidence of a significant Verbal IQ/Performance IQ discrepancy, or significant low subtest scatter for either group. Normative tables are presented for the use of WISC-R Adjunctive tests. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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- Authors: Runciman, Carey Lynn
- Date: 1996 , 2013-10-03
- Subjects: Wechsler Intelligence Scale for Children -- Cross-cultural studies , Children -- Intelligence testing , Psychological tests -- Cross-cultural studies , Educational tests and measurements -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3150 , http://hdl.handle.net/10962/d1007467 , Wechsler Intelligence Scale for Children -- Cross-cultural studies , Children -- Intelligence testing , Psychological tests -- Cross-cultural studies , Educational tests and measurements -- South Africa
- Description: The purpose of this study was to compare the WISC-R subtest score scatter patterns and obtain preliminary normative data on the WISC-R Adjunctive tests (Digit Span Forward; Digit Span Backward; Digit Supraspan; Coding Immediate Recall and Coding Delayed Recall) on a non-clinical population of South African English (n= 15) and Xhosa (n= 12) speaking, standard six children, studying in English medium schools. Tests were administered to 27 subjects, both male (n=19) and female (n=8), with a mean age of 14.1 years (range = 13.3-15.3). The results show that White English speaking children outperform Black Xhosa speaking children on Verbal, Performance and Full Scale IQs and all subtests, but that these differences tended to disappear when Full Scale IQ and school grade average were controlled for. No subtest score scatter was present for either group although more specific test items appeared to be more difficult for Xhosa speaking subjects and may have contributed to generally lowered scores. Results suggest that caution must be employed in assigning Xhosa speaking South African children to absolute IQ categories. However, the WISC-R has validity for diagnostic use on both White English speaking and Black Xhosa speaking South African children as there was no evidence of a significant Verbal IQ/Performance IQ discrepancy, or significant low subtest scatter for either group. Normative tables are presented for the use of WISC-R Adjunctive tests. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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Cognition and multiple sclerosis: a neuropsychological and MRI study
- Authors: Thornton, Helena Barbara
- Date: 1996
- Subjects: Multiple sclerosis -- Magnetic resonance imaging , Cognitive neuroscience
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3144 , http://hdl.handle.net/10962/d1007290 , Multiple sclerosis -- Magnetic resonance imaging , Cognitive neuroscience
- Description: Ten people with multiple sclerosis (MS) who felt they had cognitive difficulties because of their MS were investigated. This study had multiple aims. Firstly, to explore the subjective experience of cognitive deficits. Secondly, to assess whether or not there was objective evidence of cognitive difficulties on neuropsychological testing, and whether this was commensurate with a pattern of subcortical dementia. Thirdly, to determine whether their magnetic resonance imaging (MRI) scans replicated the patterns of atrophy frequently reported in MS patients with cognitive difficulties. And finally, to investigate the psychological well-being of the subjects. In depth neuropsychiatric interviews, psychiatric and psychological inventories, a comprehensive neuropsychological battery, and MRI investigations were done. The mean Full Scale Intelligence Quotient (FSIQ) fell within the superior range, at the 89th percentile. On tests of general intelligence, mental state examinations, there was little or no indication of cognitive deterioration. However, on sophisticated neuropsychological testing, there was convincing evidence of cognitive problems. Magnetic resonance imaging lesions were atypical of the reported research on cognitively compromised MS patients.
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- Authors: Thornton, Helena Barbara
- Date: 1996
- Subjects: Multiple sclerosis -- Magnetic resonance imaging , Cognitive neuroscience
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3144 , http://hdl.handle.net/10962/d1007290 , Multiple sclerosis -- Magnetic resonance imaging , Cognitive neuroscience
- Description: Ten people with multiple sclerosis (MS) who felt they had cognitive difficulties because of their MS were investigated. This study had multiple aims. Firstly, to explore the subjective experience of cognitive deficits. Secondly, to assess whether or not there was objective evidence of cognitive difficulties on neuropsychological testing, and whether this was commensurate with a pattern of subcortical dementia. Thirdly, to determine whether their magnetic resonance imaging (MRI) scans replicated the patterns of atrophy frequently reported in MS patients with cognitive difficulties. And finally, to investigate the psychological well-being of the subjects. In depth neuropsychiatric interviews, psychiatric and psychological inventories, a comprehensive neuropsychological battery, and MRI investigations were done. The mean Full Scale Intelligence Quotient (FSIQ) fell within the superior range, at the 89th percentile. On tests of general intelligence, mental state examinations, there was little or no indication of cognitive deterioration. However, on sophisticated neuropsychological testing, there was convincing evidence of cognitive problems. Magnetic resonance imaging lesions were atypical of the reported research on cognitively compromised MS patients.
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WISC-R coding incidental recall, digit span and supraspan test performance in children aged 6 and 7
- Authors: Avis, Cheryl Esme
- Date: 1995
- Subjects: Wechsler Intelligence Scale for Children
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3155 , http://hdl.handle.net/10962/d1007506 , Wechsler Intelligence Scale for Children
- Description: The primary aim of this study was to develop age-related normative data for the WISC-R Digits Forward, Digits Backward, Digits Difference, Digit Supraspan, and Coding Incidental Recall (Immediate and 30' Delayed) tests for a non-clinical population of South African school children aged 6 and 7. The effects of sex, English versus Xhosa language, and white versus black race groups, were additional investigations. Subjects were randomly selected from three English speaking Grahamstown schools; level of education ranged from pre-school to Sub Standard B; English speaking subjects included predominantly white children, with a small proportion of coloured, Chinese and Indian children; Xhosa speaking children were all black. Interim normative data on all tests across two age groups (6 and 7) are presented, and are considered reliable and diagnostically useful in clinical neuropsychological assessment. There were no significant effects for age, sex, English versus Xhosa language or white versus black race groups, on any of the tests with the exception of Digits Backward which yielded marginally lower scores for black Subjects. Although the mean IQ estimate based on the Draw-A-Person test was equivalent across age, sex, English versus Xhosa language and white versus black race groups, an intelligence rating of subjects by teachers revealed that black subjects were evaluated significantly lower than white subjects. This suggests the presence of prejudicial racial attitudes amongst educators in these predominantly English speaking white schools.
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- Authors: Avis, Cheryl Esme
- Date: 1995
- Subjects: Wechsler Intelligence Scale for Children
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3155 , http://hdl.handle.net/10962/d1007506 , Wechsler Intelligence Scale for Children
- Description: The primary aim of this study was to develop age-related normative data for the WISC-R Digits Forward, Digits Backward, Digits Difference, Digit Supraspan, and Coding Incidental Recall (Immediate and 30' Delayed) tests for a non-clinical population of South African school children aged 6 and 7. The effects of sex, English versus Xhosa language, and white versus black race groups, were additional investigations. Subjects were randomly selected from three English speaking Grahamstown schools; level of education ranged from pre-school to Sub Standard B; English speaking subjects included predominantly white children, with a small proportion of coloured, Chinese and Indian children; Xhosa speaking children were all black. Interim normative data on all tests across two age groups (6 and 7) are presented, and are considered reliable and diagnostically useful in clinical neuropsychological assessment. There were no significant effects for age, sex, English versus Xhosa language or white versus black race groups, on any of the tests with the exception of Digits Backward which yielded marginally lower scores for black Subjects. Although the mean IQ estimate based on the Draw-A-Person test was equivalent across age, sex, English versus Xhosa language and white versus black race groups, an intelligence rating of subjects by teachers revealed that black subjects were evaluated significantly lower than white subjects. This suggests the presence of prejudicial racial attitudes amongst educators in these predominantly English speaking white schools.
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The relative discriminatory power of a selection of neuropsychological tests in Alzheimer's disease
- Authors: Aronson, Steven
- Date: 1994
- Subjects: Alzheimer's disease -- Physiological aspects , Neuropsychological tests
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3154 , http://hdl.handle.net/10962/d1007498 , Alzheimer's disease -- Physiological aspects , Neuropsychological tests
- Description: KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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- Authors: Aronson, Steven
- Date: 1994
- Subjects: Alzheimer's disease -- Physiological aspects , Neuropsychological tests
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3154 , http://hdl.handle.net/10962/d1007498 , Alzheimer's disease -- Physiological aspects , Neuropsychological tests
- Description: KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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