1 |
Questioning the validity of international knowledge for understanding cognitive profile for rural South African populationMohlahli, Moroesi January 2016 (has links)
Thesis (M.A (Psychology))--University of the Witwatersrand, Faculty of Humanities, 2016 / Cognitive assessment tests that were standardised in the US and UK continues to be used to assess South African populations, and those that are standardised in South Africa are standardised using urban populations. These facts draw a question to the validity of the cognitive assessments when administered in rural South African populations. A test battery was conducted, containing WAIS-IVSA, Stroop, Trail Making Test, Rey Osterrieth Complex Figure Test, Ray Auditory Verbal Learning Test, Controlled Oral Word Association Test, Wechsler Card Sorting Test, Logic Memory and One Minutes Maths. Construct validity of South African standardised test (WAIS-IVSA) was therefore assessed with the use of Confirmatory Factor Analysis, and the results stipulated that the WAIS-IVSA structure was not measuring what it is supposed to. Thus further analysis on individually selected measures was done. The effects of Language, Education, Age and gender were also assessed with the use of Spearmen correlation. / MT2017
|
2 |
Validity study on the Zulu Discus Behavioural Profiling System for South African conditionsBrits, Anthony Lister January 2008 (has links)
Thesis (M.Tech.: Human Resources Management)-Dept. of Human Resources Management, Durban University of Technology, 2008. ix, 132 leaves / The research outlines the statement of the problem, motivation for the study and the related legislated requirements for all research in the field of psychological assessment. It will also take a closer look at related issues supporting the background of psychometric testing and present day themes and trends that are becoming prevalent in contemporary practice. There is an in-depth discussion on Personality which is one of the main foundation components of the Discus Behaviour Profiling System which is personality. Points on, ethics, translation, validity, reliability, test construction and cross cultural matters are also discussed. / M
|
3 |
Validity study on the Zulu Discus Behavioural Profiling System for South African conditionsBrits, Anthony Lister January 2008 (has links)
Thesis (M.Tech.: Human Resources Management)-Dept. of Human Resources Management, Durban University of Technology, 2008. ix, 132 leaves / The research outlines the statement of the problem, motivation for the study and the related legislated requirements for all research in the field of psychological assessment. It will also take a closer look at related issues supporting the background of psychometric testing and present day themes and trends that are becoming prevalent in contemporary practice. There is an in-depth discussion on Personality which is one of the main foundation components of the Discus Behaviour Profiling System which is personality. Points on, ethics, translation, validity, reliability, test construction and cross cultural matters are also discussed.
|
4 |
An investigation into the effects of socio-economic and education factors on WAIS-III performance in a stratified South African sampleKemp, Ryan January 2000 (has links)
The present study examined the effects of socio-economic status, quality and level of education on performance on the Wechsler Adult Intelligence Scale 3rd Edition r.:w AIS-III). The study was conducted within the context of the present Human Sciences Research Council (HSRC) W AIS-III standardisation process, cross-cultural psychometric research and the notion of test-wiseness. A South African sample (N = 68) comprising African first language (n = 40) and English first language (n = 28) participants, stratified for age (19 - 30 years), gender and educational attainment (Matric and Graduate) were utilised. Effects due to quality of education were determined by dividing the African language participants into those with private/model C schooling (n = 20) and those with DET schooling (n = 20). Effects due to level of education were determined by dividing the entire sample into those with Matric level education (n = 34) and those with Graduate level education (n = 34). Detailed demographic and socio-economic information were recorded for all participants, who completed the entire American version of the W AIS-III. Results revealed a highly significant positive correlation between high socio-economic status and W AIS-III Full Scale IQ. In addition the respective impact of the relatively poor quality of education and lower level of educational attainment on W AIS-III performance was substantial. These results were discussed in terms of their implications for cross-cultural research, the HSRC standardisation of the W AIS-III and the practical use of the W AIS-III in neuropsychological assessment.
|
5 |
Evaluating the LEAP experience using a contextually oriented modelJacobs, Cecilia January 1998 (has links)
Thesis (MTech(Education))--Cape Technikon, 1998 / This study presents a model for the evaluation of educational innovation in a context of
transformation. The model incorporates formative, summative and illuminative
evaluation goals and emphasises the need to locate the innovation which is being
evaluated within the context and policy framework of its operation. The evaluation
framework provided by the model takes into account the full range of variables
impacting on innovative educational practice and subjects the innovation, along with its
transforming educational context, to the scrutiny of evaluation. The ten-stage
generalised evaluation model is presented as a framework for the evaluation of any type
of educational innovation.
In this study the model is applied to the evaluation of an innovative intervention, LEAP
(Learning in English for Academic Purposes), at a tertiary institution in South Africa.
The LEAP course aims to develop English academic literacy skills in students, foster
student-centred learning and teaching and promote the transfer of academic literacy
skills across the curriculum. The background to, theoretical underpinnings and
development of the course are expanded on in the study. In line with the model, the
LEAP intervention is located within the context and policy framework of its academic
context. The principal stakeholders in the LEAP intervention are identified. They are
used as sources to identify the aspects of LEAP to be evaluated, as well as to identify the
criteria for evaluation. An eclectic approach is adopted in the evaluation of the LEAP
course. Both quantitative and qualitative data collection methods are employed, using a
variety of instruments. A range of sources is consulted to cross-validate the analysis of
the data, and recommendations are made on the basis of conclusions drawn from the
interpretation of the data. The final section of the study reflects on the whole evaluation
process and areas for further research are also discussed.
|
6 |
Die konseptualisering en taksering van geestesgesondheid binne persoonlike verbandBotes, Andries Stephanus 09 February 2015 (has links)
M.A. (Psychological Counseling) / Please refer to full text to view abstract
|
7 |
The relationship of general retention ability to new South African group test non-verbal/verbal IQ discrepancies and their academic correlatesWatson, Peter James January 1992 (has links)
Both experimental research (Robbertse,1952)and clinical observation (Kruger, 1972; van der Merwe,1978) have indicated that pupils with a Verbal IQ score 10 or more points lower than their non-Verbal IQ (termed a 'Type 1' discrepancy in the present research) on the New South African Group Test (NSAGT) show poorer academic achievement than their peers of similar ability. The present research investigates the relationship of general retention ability, as defined by Hakstian and Cattell (1978), to Type 1 discrepancies as well as to their academic correlates. One hundred and thirty-nine standard seven English-speaking boys were tested on the NSAGT and the Junior Aptitude Test (JAT) (of which tests 8 and 9 give an indication of general retention ability) and divided into a group with Type 1 discrepancies and two control groups. All three groups were matched on full-scale IQ. Comparison of these three groups, using the analysis of variance technique, showed that there was no significant difference between them in level of general retention ability or in academic performance (measured by average percentage in the final standard seven examination). While no significant difference was found between the three groups regarding the relationship of general retention ability to academic performance, in the Type 1 discrepancy group the relationship of rote memory (JAT test 8) to academic performance differed markedly from that of associative memory (JAT test 9) to academic performance. In the Type 1 discrepancy group rote memory was highly associated with academic performance, possibly indicating a compensatory strategy for the lower Verbal ability in this group, enabling it to achieve academically on par with the control groups, contrary to what would be expected on the basis of Robbertse's (1962) findings. In terms of Jensen's (1982) Level 1/Level 11 theory of intelligence, it appears from the present research that rote memory ability (JAT test 8) varies between being a Level 11 ability (in the Type 1 discrepancy group) to acting as a Level 1 ability in the two control groups. The present research questions Verwey and Wolmarans's (1980) description of both JAT tests 8 and 9 as simple measures of retention Test 9, in particular, appears to function consistently as a Level 11 ability.
|
8 |
A qualitative bias review of the adaptation of the WAIS-III for English-speaking South AfricansAston, Susan January 2006 (has links)
In response to the growing demand for a test of cognitive ability for South African adults, the Human Sciences Research Council (HSRC) adapted the Wechsler Adult Intelligence Scales, third edition (WAIS-III) for English-speaking South Africans. However, since the publication of the South African adaptation in 2001, there has been some concern whether some bias may not still be present in the measure. Consequently, this study aimed to qualitatively explore the item content of the South African adaptation of the WAIS-III in order to identify items that might still be potentially biased with specific reference to cultural and linguistic issues. The researcher employed purposive sampling, a non-probability technique, to select psychology professionals to act as expert reviewers. The sample consisted of 20 registered psychologists, psychology lecturers and psychology interns from the predominant culture and language groups of the Eastern and Western Cape. Qualitative and quantitative data were collected by means of a Bias Review Questionnaire which consisted of fixed-choice questions, as well as sections in which specific comments could be indicated. The questionnaire was distributed to 20 selected participants who were qualified to administer psychometric measures and were registered with the Health Professionals Council of South Africa (HPCSA). Qualitative data was analysed using Tesch’s model of thematic content analysis, and five main themes relating to potential bias were identified, namely: Culture, Language, Education, Socio-economic status, and Format. The qualitative data was re-submitted to the expert review group for approval and further comment. Quantitative data obtained from the Bias Review Questionnaire was analysed by obtaining frequency counts, which were converted to percentages, per subtest and aspect reviewed. The major findings of the study were as follows: 1. Cultural bias is evident in the South African adaptation of the WAIS-III. The differential meanings ascribed to concepts, terms, phrases and words by diverse cultures impact on test performance, as does familiarity with stimulus materials used in the measure. 2. Language bias was detected against groups with English as their second or third language owing to the unfamiliar, and sometimes archaic, terms and vocabulary used in the measure. The intended meanings of the translated items are unclear and confusing for test-takers. 3. South African test-takers have experienced vastly divergent educational opportunities which impact on intelligence test performance. The measure contains potential bias against individuals from disadvantaged educational backgrounds. 4. The content of the items is not relevant to test-takers from deprived socioeconomic backgrounds that have been unable to access good-quality education. 5. Format bias was found to exist with respect to the timed tests. Cultural groups who do not value speededness are disadvantaged by the structure and format of the measure. Based on the findings of this study, certain recommendations were made. These include: 1. Additional qualitative investigation of the WAIS-III , with a view to further adaptation in an effort to eradicate bias on cultural or linguistic grounds, and 2. Conducting further Differential Item Functioning (DIF) analyses and establishing construct equivalence across cultural and linguistic groups to promote this objective. Among the contributions believed to have been made by this study are the identification of potentially biased subtests and items on the grounds of culture and language, which will facilitate possible further revision and adaptation of the measure. Additionally, the variables that were considered important influencing factors of cognitive test performance have been documented and are accessible for future research that will supplement the present study.
|
9 |
Provisional formulation of normative data for semi and unskilled black and coloured workers on the Trail making TestDaly, Nigel January 1988 (has links)
Includes bibliography. / This study provides a provisional normative range of performance for the South African semi- and unskilled black and coloured population groups on the Trail Making Test. One hundred and six black and coloured semi- and unskilled workers from the Groote Schuur Hospital in Cape Town, satisfying the criteria of 8 years or less of formal education, with no neurological impairment or psychopathology, and some degree of literacy, were randomly selected. Parts A and B of the Trail Making Test were then administered and scored, and the scores reported in tabular form, broken up in terms of race, age and education. A statistical analysis (multiple linear regression) was applied to the data and additional information on the effects of age, education and sex on test performance briefly discussed in terms of previous research findings. The results of this study add weight to Dugmore's (1987) assertion that existing norms currently in use for the Trail making Test are invalid for these population groups. Limitations of the study and suggestions for further research were also briefly discussed.
|
10 |
A preliminary factor analytic investigation into the first-order factor structure of the fifteen factor questionnaire plus on a sample of black South African managersMoyo, Seretse 12 1900 (has links)
Thesis (MComm (Industrial Psychology))--Stellenbosch University, 2009. / ENGLISH ABSTRACT: Organisations in open market economic systems aspire to optimally utilize the scarce resources at their disposal so as to maximize profits. To achieve this goal, the human resources function is tasked with the responsibility to acquire and maintain a competent and motivated workforce in a manner that would add value to the bottom-line. Selection thereby becomes a critical human resources management intervention in any organisation in as far as it regulates human capital movement into and through the organisation. To be able to make informed selection decisions, industrial-organisational psychologists and human resources practitioners need valid and reliable information on predictor constructs to allow them to make accurate predictions of the criterion construct. This provides the essential justification for the primary objective of this study which was to undertake a factor analytic investigation of the first-order factor structure of the Fifteen Factor Questionnaire Plus (15FQ+) on a sample of Black South African managers.
The data used in this study was drawn from the database of Psymetric (Pty) Ltd with the permission of Psytech SA. The sample comprised 241 Black managers assessed by Psymetric (Pty) Ltd between 2002 and 2006. Item- and dimensionality analyses were performed on the 15FQ+ subscales to assess the success with which they represented the underlying personality constructs. The outcome of both the item and dimensionality analyses showed that although the items in each of the subscales seemed to be representing the underlying personality construct, they were not without problems. A spectrum of goodness-of-fit statistics was used to assess the measurement model fit. The model‟s overall fit was found to be good. The model parameter estimates, however, gave some reason for concern. The results of the confirmatory factor analyses suggest that the claim made by the 15FQ+ authors that the items included in each subscale reflect specific personality dimensions is tenable. The magnitude of the estimated model parameters, however, suggests that the items generally do not reflect the latent personality dimensions they were designated to reflect with a great degree of success. The items are reasonably noisy measures of the latent variables they represent. Based on these findings, this instrument should be used with caution, particularly on groups different from the UK samples on which it was originally developed and standardised. This study expands our understanding of this measure. Its findings should guide future research on a larger, more representative sample from the same target population to give credence to, or to refute these findings. / AFRIKAANSE OPSOMMING: Organisasies in „n vrye-mark ekonomiese stelsel streef daarna om die skaars hulpbronne tot hul beskikking optimal aan te wend ten einde wins te maksimeer. Om hierdie doel te bereik word die menslike hulpbronfunksie getaak met die verantwoordelikheid om ‟n bevoegde en gemotiveerde werksmag te verkry en in stand te hou op ‟n wyse wat waarde tot die onderneming voeg. Keuring word daardeur ‟n kritieke menslike hulpbronintervensie in enige organisasie in so verre dit die beweging van menskapitaal in en deur die organisasie reguleer. Ten einde ingeligte keuringsbesluite te kan neem, benodig bedryfsielkundiges en menslike hulpbronpraktisyns betroubare en geldige inligting oor voorspellerkonstrukte om hul in staat te stel om akkurate voorspellings van die kriteriumkonstruk te maak. Dit bied wesenlik die regverdiging vir die primêre oogmerk van hierdie studie, naamlik om „n faktoranalitiese ondersoek van die eerste-orde faktorstruktuur van die Fifteen Factor Questionnaire Plus (15FQ+) op „n steekproef swart Suid Afrikaanse bestuurders te onderneem.
Die data wat in die studie gebruik is, is verkry uit die databasis van Psymetric (Pty) Ltd met die toestemming van Psytech SA. Die steekproef het bestaan uit 241 swart bestuurders wat tussen 2002 en 2006 deur Psymetric (Pty) Ltd getoets is. Item- en dimensionaliteitontledings is op die 15FQ+ subskale uitgevoer ten einde die sukses vas te stel waarmee hul die onderliggende persoonlikheidskonstrukte verteenwoordig. Die resultate van beide die item- en die dimensionaliteitontledings het aangedui dat ofskoon die items van elke subskaal die onderliggende persoonlikheidskonstruk skyn te verteenwoordig, was hulle nogtans nie sonder probleme nie. ‟n Spektrum passingsmaatstawwe is gebruik om die pasgehalte van die metingsmodel te beoordeel. Die model se algehele passing was goed. Die skattings van die model parameters het egter wel rede tot kommer gegee. Die resultate van die bevestigende faktorontleding dui daarop dat die aanspraak van die ontwikkelaars van die 15FQ+ dat die items wat in elke subskaal ingesluit is spesifieke persoonlikheidsdimensies reflekteer, wel houbaar is. Die grootte-orde van die geskatte modelparameters dui egter daarop dat die items oor die algemeen nie die persoonlikheidsdimensies wat hul ontwerp is om te reflekteer met groot sukses reflekteer nie. Die items is redelik raserige metings van die latente veranderlikes wat hul verteenwoordig. Gebaseer op hierdie bevindinge behoort hierdie instrument met omsigtigheid gebruik te word, veral op groepe wat verskil van die VK steekproewe waarop die instrument ontwikkel en gestandaardiseer is. Die study dra by tot ons begrip van die instrument. Die bevindinge van die studie behoort toekomstige navorsingop 'n groter, meer verteenwoordigende steekproef uit dieselfde teikenpopulasie te rig ten einde die onderhawige bevindinge te steun of te weerlê.
|
Page generated in 0.1005 seconds