The aim of this study was to determine the psychometric properties of a shortened version of the Zimbardo Time Perspective Inventory (ZTPI) in an African context. This self-report questionnaire, referred to as the Zimbardo Time Perspective Inventory -Revised Form (ZTPI-RF) consists of 20 items representing the five subscales of the original scale, namely: Past-Positive, Past-Negative, Present-Hedonistic, Present-Fatalistic and Future. The ZTPI-RF was completed by participants (N=1050) from urban (n=451) and rural (n=599) areas in the North-West Province of South Africa, together with a number of measures of psychological well-being. These scales, which were included for criterion-related validity purposes, were the Affectometer 2 (short version) (Kammann & Flett, 1983), the Satisfaction with Life Scale (Diener, Emmons, Larsen & Griffin, 1985), Sense of Coherence Scale (Antonovsky, 1987, 1993) and the General Health Questionnaire (Goldberg & Hillier, 1979). Results regarding the reliability and construct validity of the ZTPI-RF and its subscales were unsatisfactory. Qualitative data was also obtained, and analyzed by means of direct content analysis to help establish a picture of how time perspective prevails in an African context, and to determine whether time perspective is associated with psychological well-being. Qualitative results showed that participants from an African context were strongly oriented toward the present and that social support played the most prominent role regarding participants' attitude toward the present. It was concluded that the ZTPI-RF is, in its current form, not reliable for the determination of time perspective of individuals from an African context, and that a longitudinal qualitative approach might be best suited to obtain information about the nature and dynamics of time perspective in an African context. / Thesis (M.A. (Psychology))--North-West University, Potchefstroom Campus, 2008.

Thesis (M.A. (Psychology))--North-West University, Potchefstroom Campus, 2008.

One key focus in the 21st century is adjusting work and personal life in order for individuals to find a rhythm to help them combine work with other responsibilities and aspirations in their personal lives. Over the past few decades it has become evident that work and personal life are interrelated domains and that employed individuals experience interaction between these domains. Although the amount and extent of work-family research studies in South Africa have progressed considerably over the past decade, it is not clear how the experiences of the interference between work and nonwork roles compare to the experiences of employees in other countries. There is also no South Africa instrument that measures the interference between work and different nonwork roles in both directions (work-to-nonwork and nonwork-to-work). This could pose potential problems for organisations and future workfamily studies in South Africa. The objectives of this research were 1) to gain insight into the interaction between work and personal life in the South African context and how South African employees experience this interaction; 2) to develop a new work-nonwork interference instrument that is suitable for the South African context and that addresses measurement and theoretical issues relating to previous work-family instruments; and 3) to test the psychometric properties of the newly developed work-nonwork interference instrument. The empirical study consisted of three phases. During the first phase, exploratory interviews (i.e. 92 interviews) were conducted in order to gather information regarding the interaction that individuals experience between their work and their personal lives. Thereafter, a new instrument that measures work-nonwork interference was developed and tested with a pilot study (n = 245) in order to overcome some of the measurement limitations relating to previous work-family instruments. During the final phase, the psychometric properties of the newly developed work-nonwork interference instrument were tested (Le. construct validity, discriminant validity, convergent validity and external validity; n = 366). Results from the exploratory phase indicated that South African employees experience various forms of interaction between their work and other dimensions in their personal life (e.g. domestic, leisure, exercise, studies, community, extended family and religion/spirituality). In addition, South African employees experience various stressors in their work environment that contribute to this interaction (i.e. general stressors such as pressure, overload, workload, stressful working arrangements, and strenuous relationships at work, and more occupation-specific stressors such as stressful nature of the job and not being valued in an unsupportive work environment). Additional supportive aspects present in their work environment included supportive work arrangements, supportive relationships at work and occupation satisfaction. Results also indicated consequences specifically related to all the forms of interaction (e.g. time-based consequences, build-up and spillover of emotions, and energy depletion) and consequences that are more related to a specific form of interaction (e.g. mental preoccupation, strain on relationships, managing responsibilities, limiting of work opportunities, energy generation, learned skills). From the exploratory study, very similar findings were obtained and some unique contributions were made to existing workfamily literature. The antecedents mentioned are in line with international literature (physical workload, time pressures, physical stressors, shift work and recipient contact) and the consequences are very similar to categorised consequences reported in international research (i.e. physical, psychological, behavioural, attitudinal, organisational consequences or work, nonwork and health-related consequences). During the second phase a new work-nonwork interference (W-NWI) instrument was developed which differentiates among interference between work and various specific roles in an individuals' personal life (i.e. work-parent interference, parent-work interference, workspouse interference, spouse-work interference, work-religion/spirituality interference, religion/spirituality-work interference, work-domestic interference, domestic-work interference). During the evaluation study various problematic items were eliminated using the Rasch measurement model. The fmal phase included the validation study where the psychometric properties of the new instrument were investigated. The results provided evidence for constrUct, discriminant and convergent validity, reliability and significant relations with external variables. Tills study provides evidence for the psychometric properties of the new instrument, which researchers and managers can use to investigate the specmc interference between work and different nonwork roles in employees' private lives. Recommendations for future research were made. / Thesis (Ph.D. (Industrial Psychology)--North-West University, Potchefstroom Campus, 2010.

Objective. This thesis examines the extent to which an intelligence test, the Reynolds Intellectual Assessment Scales (RIAS), aligned with the Carroll-Horn-Cattell theory of intelligence in children ages 4-18 who are either typically-developing or who have a variety of clinical impairments. Other aspects of the RIAS’s construct validity were also evaluated, including its relationship with the Wechsler Intelligence Scales for Children – Fourth Edition (WISC-IV) and whether the RIAS measures intelligence in the same way in typically-developing children as in children with traumatic brain injury (TBI). Methods. Confirmatory factor analysis was used to evaluate the fit of one-factor (g) and two-factor (Verbal Ability and Non-Verbal ability) models in each sample. Configural and measurement invariance of each model were evaluated across the typically-developing group and a group of children with TBI. Correlations between scores on the RIAS and WISC-IV were examined in a group of children with clinical disorders. Results. The two-factor model fit the data of both groups while the one-factor model provided good fit to only the typically-developing group`s data. Both models showed configural invariance across groups, measurement invariance of the two-factor model, and partial measurement invariance of the one-factor model (What`s Missing subtest unconstrained), but scalar invariance was not established for either model. RIAS’s verbal subtests and indexes correlated with theoretically consistent WISC-IV indexes but the RIAS’s nonverbal subtests and indexes did not correlate highly with WISC-IV performance subtests. All RIAS index scores were higher than WISC-IV index scores. Conclusions. Evidence for the interpretability of the NIX and VIX as separate indexes was not found. The VIX is a valid index of crystallized abilities but the NIX does not adequately measure fluid intelligence. The CIX appears to provide a valid measure of g, but may be overly reliant on verbal abilities. The RIAS has significant validity issues that should limit its use in making important decisions. / Graduate

No description available.

There is a lacuna in the literature regarding the measurement of community collective efficacy, especially in an African context. Previously, a variety of studies have used and validated self-efficacy measures in Western social contexts (Chen, Gully & Eden, 2001; Schwarzer & Jerusalem, 1993; Carroll, Rosson & Zhou, 2005). Findings from cross-cultural psychology indicate that human behaviour is not acontextual (Devonport & Lane, 2006; Karademas, 2006; van de Vijver & Leung, 1997). Thus, this study was an attempt to explore the validation of a community collective efficacy scale in an African cultural context. A sample of 1050 Setswana-speaking participants was drawn from both urban and rural areas. The participants came from a relatively more collectivistic cultural context. Measuring instruments such as the Community Collective Efficacy Scale (Carroll, Rosson & Zhou, 2005), the Generalised Self-Efficacy Scale ( Schwarzer & Jerusalem, 1993), the New General Self-Efficacy Scale ( Chen, Gully & Eden, 2001), the Sense of Coherence Scale (SOC-29) (Antonovsky, 1987, 1993) the Affectometer 2 (short version) (AFM) (Kammann & Flett, 1983), the Satisfaction with Life Scale (SWLS) (Diener, Emmons, Larsen & Griffin, 1985) and the General Health Questionnaire (GHQ-28) (Goldberg & Hillier, 1979) were used in this study. Criterion-related validity of the CCES was established. Construct validity was determined by conducting confirmatory and exploratory factor analyses on the community collective efficacy scale. Results indicated a Cronbach alpha reliability coefficient of 0.72 for the CCES and an acceptable inter-item correlations. Criterion-related validity was satisfactory. Confirmatory factor analysis indicated a good fit and exploratory factor analysis yielded only one factor on the items used. The results of the study indicated that overall, the CCES may be a valid measure of community collective efficacy in the sample selected for the study based on parameter estimates. Future studies should further validate this instrument cross-culturally in various African groups and contexts. / Thesis (M.A. (Psychology))--North-West University, Potchefstroom Campus, 2008.

The aim of this study was to determine the psychometric properties of the Mental Health Continuum - Short Form (MHC-SF) (Keyes, 2006a) in an African context. This 14-item self-report questionnaire that measures mental health was developed in a Western individualistic context, which differs from the more collectivistic African cultural context in South Africa. The MHC-SF consists of three subscales, namely Emotional well-being, Social well-being and Psychological/personal well-being. Participants (N^IOSO) from urban (n=451) and rural (n=599) settlements completed the MHC-SF and other measures indicating positive and negative facets of psychosocial functioning in a one-shot cross-sectional survey design with the aid of 16 trained fieldworkers. Scales included to determine concurrent/criterion-related validity were the Affectometer 2 (short version) (AFM) (Kammann & Flett, 1983), the Satisfaction with Life Scale (SWLS) (Diener, Emmons, Larsen & Griffin, 1985), the Community Collective Efficacy Scale (revised) (CCES) (Carrol, Rosson & Zhou, 2005), the Generalized Self-Efficacy Scale (GSE) (Schwarzer & Jerusalem, 1993), the New General Self-Efficacy Scale (NGSE) (Chen, Gully & Eden, 2000), the Sense of Coherence Scale (SOC-29) (Antonovsky, 1987,1993) and the General Health Questionnaire (GHQ-28) (Goldberg & Hillier, 1979). Results indicated a Cronbach alpha reliability coefficient of 0,75 for the total MHC-SF and acceptable inter-item and item-total correlations for the items. Item 4 had an eta-squared value indicating a large effect size, and thus had a negative impact on reliability. Mean inter-item correlations ranged between 0,19 and 0,30 and item-total correlations between 0,13 and 0,51. Concurrent/criterion-related validity was satisfactory. Confirmatory factor analysis yielded three factors. A three-factor model, omitting item 4, had the best fit in structural equation modelling. Six percent of the participants were languishing, Psychosocial well-being in an African context 73%) were moderately mentally healthy and 21%> were flourishing. More participants from the urban settlement flourish than from the rural settlement. It was concluded that the MHC-SF is reliable and valid for further use in research in an African context. / Thesis (M.A. (Psychology))--North-West University, Potchefstroom Campus, 2008.

This thesis describes studies into the psychometric properties of a Swedish language version of the Adolescent Drug Abuse Diagnosis (ADAD) instrument. The psychometric properties of this instrument have been examined in two previous studies: an American study was conducted by the developers of the interview, Friedman and Utada (1989), and a Swiss study was undertaken by Bolognini et al. (2001). The American and the French (as used in the Swiss study) versions of ADAD exhibit good validity and reliability, in the form of both interrater reliability and the internal consistency of the composite scores. Study I evaluated the psychometric properties of the Swedish version of the ADAD interview in normal adolescents and adolescents with antisocial problems. It was found that the instrument has good interrater reliability, that the composite scores exhibit moderate internal consistency, and that the concept validity was acceptable and similar to that of the American and Swiss versions. The results also showed that the problem areas of ADAD produced meaningful correlations. The interviewer ratings, the adolescent’s ratings and the composite scores were compared and discussed. Some problems concerning the composite scores were discovered and will need to be analyzed in future studies. Study II investigated the utility and problems associated with the composite scores in the ADAD within and between normal adolescents and adolescents with antisocial problems. When comparing interviewer severity ratings and composite scores within the two groups, the composite scores were found to behave differently to the interviewer ratings. For normal adolescents, the composite scores are generally higher than the interviewer ratings, but for the adolescents with antisocial problems the reverse is true. The interviewer severity ratings seem to be the most appropriate outcome when the objective is to separate antisocial and normal groups of adolescents from each other. The difference between the two groups is smaller as measured by composite scores. The composite scores appear to function as viable indicators of current problems in all areas except for Medical and Alcohol problem area. The critical items within the Medical and Alcohol composite scores are explored and discussed.  Study III investigated the concurrent and predictive validity of the ADAD Psychological status and problem area. Concurrent validity was demonstrated by significant correlations between the ADAD, Youth Self Report (YSR) and Beck Depression Inventory (BDI) scores. The predictive validity of this problem area of the ADAD was tested by exploring its correlations with the YSR, BDI, and DICA problem ratings; moderate correlations were observed, suggesting that in clinical practice, the ADAD Psychological status and problem area may be a useful tool for the assessment and measurement of current psychological problems. The utility obtained by making decisions using the test is substantial. Overall, the results of these studies indicate that the Swedish version of ADAD appears to be a psychometrically good instrument for assessing the severity of adolescents’ problems and their need for treatment, but there are some problems with the Medical and Alcohol composite scores.

[Abstract]Cognitive tests are rarely used in isolation. Instead the collection of tests into batteries is common place in clinical assessment. Clinical batteries range from fixed collections of tests administered unchanged to each client, to batteries flexibly constructed according to a process of hypothesis testing whic varies between clients. Reviews of clinical practice indicate that clinicians predominantly employ a semi-flexibly constructed battery, comprised of a core group of measures with the addition of others drawn as needed from an available pool. While this accommodates for clinical concerns, the psychometric characteristics of such a battery tend to be unevaluated and clinicians draw inferences without reference to the resultant associated measurement error. This has been duly noted in the research literature which increasingly cites the need for psychometric evaluation at the battery level. The current investigation was undertaken to address this difficulty of clinical practice and aimed to develop a psychometrically and practically driven actuarial model with practicing clinicians could structure and analyse cognitive batteries with due reference to reliability, validity and clinical utility. To this end, a review of psychometric literature was undertaken to dermine theorical guidelines for the control and measurement of error at the individual test and battery level. Reviews indicated that to successfully accommodate for the impact of random measurement error, clinicians must apply reliability theory to evaluation of the error associated with domain-based combinations of tests. Additionally, to ensure the validity of test-based inferences and avoid errors in decision-making, clinicians must apply empirically vaidated structures of cognitive function to guide test selection and combination. Given the pressing necessity of battery flexibility, it was concluded that clinicians could best accommodate psychometrid and clinical factors by the use of flexibly constructed composite scores. A reliable approach to psychological testing (RAPT) was proposed which applied psychometric theory and clinical factors to the development of a robust battery structure. The RAPT method focussed on the use of composite scores of domain-specific tests, grouped according to empirically validated domains and moderated by direct estimation of composite reliability. The RAPT was developed with the aim of facilitating the application of psychometric, actuarial methodology to a flexible collection of cognitive tests. In explicating the RAPT model, fifteen primary algorithms were derived from psychometric literature and outlined according to 3 stages of battery usage: test selection; test analysis; and, test interpretation. The utility of the RAPT was examined in terms of its capacity to improve psychometric robustness within a flexible battery. Specifically, using simulated demonstration, RAPT was demonstrated to provide a means of formalising empirically validated structure within a battery of tests, of controlling and improving the reliability of domain-based composite scores, of reducing the impact of artifactual errors on domain-based inferences and of applying actuarial methods typically associated with fixed batteries to a flexible collection of measures. Following this, RAPT was demonstrated to replicate existing psychometrically valid and stable interpretative structures. Specifically, RAPT algorithms were used to re-create the normative information provided for the Wide Ranbe Achievement Test, Fourth Edition (WRAT-4)Reading Compoiste. Norms calculated using RAPT were compared with those provided in the WRAT-4 interpretative manual with minimal differences found. RAPT algorithms were then used to re-create normative and ipsative tables, summary scores intercorrelations, and reliability coefficients for the Wechsler Adult Intelligence Scale, Third Edition (WAIS-III) summary scores: Full Scale IQ (FSIQ); Verbal IQ (VIQ); Performance IQ (PIQ); Verbal Comprehensive Index (VCI); Perceptual Organisation Index (POI); Processing Speed Index (PSI); and, Working Memory Index (WMI). Again, RAPT, was demonstrated to successfully replicate these data. Finally, the clinical utility of RAPT was demonstrated with the illustration of case examples which outlined the capacity of RAPT to apply psychometrically sound methodology to the tasks of modifying existing composites, modifying existing battery structure and developing battery structure and analyses according to a factor analysis investigation of an Australian normative sample (n=1045). These investigations provided comprehensive evidence of the capacity of the RAPT to enable the direct application of psychometric theory to semi-flexible battery construction in a manner suitable for use in current clinical practice.

Functioning Assessment Short Test (FAST) är ett instrument framtaget för att mäta funktion hos patienter med bipolär sjukdom. FAST fyller en potentiellt viktig funktion och både forskare och kliniker betonar betydelsen av att mäta funktion hos denna patientgrupp. Syftet med denna studie var att undersöka intern konsistens, interbedömarreliabilitet, faktorstruktur och samtidig validitet hos den svenska versionen av FAST. Datamaterialet samlades in på Affektiva mottagningen vid Psykiatri Sydväst och 219 patienter deltog i studien. Faktoranalysen gav stöd för sex faktorer. Interbedömarreliabiliteten var relativt låg och visade på signifikanta skillnader mellan olika bedömare. Även då resultaten preliminärt visade att FAST har tillfredsställande validitet och intern konsistens för att användas i det praktiska arbetet, bör de psykometriska egenskaperna hos den svenska versionen av FAST utvärderas ytterligare i kommande studier.