The world that is becoming more advanced and complex, induces acute competitiveness and immense challenges for organisations and employees. This, along with the increased demands from current operating economic conditions around the globe oblige organizations to embark on adaptive strategies such as downsizing, restructuring and temporary employment as a mechanism to sustain their continued existence in a hastened transformation era. Although these impetuses affect the content and structure of work directly, they also have indirect inherent effects as they create pressures of uncertainty and feelings ofjob insecurity. It is apparent that job insecurity may negatively affect employees' job satisfaction and affective organisational commitment. It is deemed important to identify the negative impacts of these changes on individual employees and devise change management and coping interventions to empower employees in lowering the stress that they may experience due to transformations within their organisations. Thus, the objectives of this research was to investigate the relationship between job insecurity, job satisfaction, affective organisational commitment and work locus of control and how demographic groups might differ in their experience of job insecurity among employees (N = 286) in a co-operation industry. A cross-sectional survey design was used. The constructs were measured by means of the Job Insecurity Scale (JIS), Minnesota Satisfaction Questionnaire (MSQ), Organisational Commitment Questionnaire (OCQAffective- subscale), Work Locus of Control Scale (WLCS) and a demographic questionnaire. The research method consists of a brief literature review and an empirical study. Confirmatory factor analysis was used to assess the construct validity of the MSQ, OCQAffective, and WLCS. Alpha coefficients were also computed to assess the internal consistency of the scales. Descriptive statistics, Pearson-product moment correlation coefficients, MANOVA, and ANOVA were used to analyse the data. Multiple regression analyses were used to further examine the potential mediating effect of work locus of control in the job insecurity-outcomes relationships. Simple principal component analyses confirmed appropriate factor structures for the JIS. MSQ and OCQ. Although Spector proposed that the WLCS is a unidimensional scale, various previous studies have obtained evidence supporting a two-factor structure. In a similar vein, simple principle component analysis delivered a two-factor structure. All scales used demonstrated an adequate level of internal consistency. Job insecurity indicated a practically significant positive correlation with intrinsic job satisfaction, although the relationship between job insecurity and extrinsic job satisfaction was not statistically significant. A statically significant positive correlation was found between job insecurity and affective organisational commitment. Work locus of control demonstrated a practically significant correlation with job insecurity. Work locus of control demonstrated a practically significant positive correlation with affective organizational commitment, as well as both job satisfaction dimensions. Regression analyses indicated that work locus of control mediates the relationship between job insecurity and intrinsic job satisfaction. Work locus of control was also found to be a mediator of the relationship between job insecurity and affective organisational commitment. It was established that employees with tertiary qualifications such as degrees and postgraduate degrees experienced lower job insecurity as compared to employees with lower qualifications such as Grade 10 to Grade 12. No further significant differences were established in terms of gender, culture, age and tenure in the experience of job insecurity. Conclusions are made, limitations of the current research are discussed and recommendations for the organisation and future research are outlined. / Thesis (M.A. (Industrial Psychology))--North-West University, Vaal Triangle Campus, 2007.

Due to constant changes and demands from external forces markets, today's employees are subjected to continuous change in the workplace in order for organisations to stay competitive. Changes include restructuring, downsizing, technological changes and so forth, which result in employees feeling less secure in their jobs compared to employees a few decades ago. This insecurity is a reality in the lives of employees and leads to a whole range of emotions and reactions toward these changes. The primary objectives of this research is to determine the nature of the relationship between job insecurity and affective organisational commitment, and also the nature of the relationship between job insecurity and the general health of employees in a specific petro-chemical organisation (N = 229). The final objective is to determine if work locus of control plays a mediating role in the above mentioned relationships. A cross-sectional survey design was employed. Constructs were measured using the following: the Job Insecurity Questionnaire (JIQ), the Organisational Commitment Questionnaire (OCQ) [where only the affective subscale was interpreted], the General Health Questionnaire (GHQ), the Work Locus of Control Scale (WLCS) as well as a biographical questionnaire. Results indicated that a practically significant relationship of medium effect exists between job insecurity (both dimensions) and work locus of control, and also a practically significant negative relationship between job insecurity (cognitive subscale) and affective organizational commitment and between affective organisational commitment with work locus of control. No other practically significant relationships were found, although the relationship between the variables did prove to be statistically significant. Regression analysis confirmed that work locus of control fully mediate the relationship between affective job insecurity and affective organisational commitment and also between affective job insecurity with general health, whilst partial mediation by work locus of control was found between cognitive job insecurity and affective organisational commitment and cognitive job insecurity and general health. Conclusions and recommendations were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Vaal Triangle Campus, 2007.

Organisations are faced with the reality of a constantly changing environment surrounding them. This brings about the need for changes and adaptations to the changing world around them (Rothmann, 2003). These changes are implemented in the form of restructuring, downsizing, mergers, evolving governmental policies and organisational change initiatives, which can result in high costs, lower productions and poor employee wellness (Van Tonder,2005). In South Africa, the organisations have to cope with change and adaptations to the global world which brings about the need for innovation, competitiveness, customer satisfaction and service quality to remain ahead in the industry which can bring strain on employees and the organisation as a whole (Malhotra & Mukherjee, 2003). ln education institutions, teachers have certain demands to cope with which include syllabus changes and growth, personnel shortages, higher student numbers, multi-lingual teaching and increased specialization (Jackson & Rothmann, 2006) The primary objective of this research was to investigate the relationship between job insecurity, job satisfaction, affective organisational commitment and sense of coherence. Contructs were measured by means of the Job Insecurity Questionnaire (JIQ), the Revised Minnesota Job Satisfaction Questionnaire (JSQ), the Organisational Commitment Questionnaire (OCQ), the Orientation to Life Questionnaire (OLQ) and a biographical questionnaire. A cross-sectional survey design was conducted among the 546 employees of various educational institutions in the Sedibeng District of Gauteng. A response rate of 315 completed questionnaires was received. No statistically significant relationship was found between job insecurity and job satisfaction, job insecurity and affective organisational commitment, and job insecurity and sense of coherence. There was a practically significant relationship found between job satisfaction, affective organisational commitment, and sense of coherence. Sense of coherence was also found to have no moderating effect on job insecurity and job satisfaction, and job insecurity and affective organisational commitment. Recommendations for the organisation and future research were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Vaal Triangle Campus, 2010.

Prior research has shown that negative attitudes toward mathematics are linked to decreased achievement and participation, but it is unclear what factors influence children’s attitudes toward mathematics. Thus, the overarching goal of this study was to understand the relationship between outside sources and children’s views. Specifically, this study investigated elementary students’ experiences with and views of mathematics and mathematicians, and the ways that their views may be influenced by popular media representations, parents’ views, and teachers’ views of mathematics and mathematicians. Additionally, the study examined whether there were differences between girls’ and boys’ views and between younger (Grade 4) and older (Grade 8) elementary students’ views of mathematics and mathematicians. Framed by a social constructivist and feminist epistemological stance, the study employed a multi-method framework comprised of questionnaires (n = 156), drawings of mathematicians (n = 94), and focus group interviews (five interviews, involving 21 participants) with students; an analysis of children's media (43 examples across five media types); interviews with parents (11 interviews, involving 13 participants); and interviews with teachers (nine interviews, involving 10 participants). In terms of their relationships with mathematics, the student, parent, and teacher participants’ views were encouraging, both in terms of perceptions of themselves as learners of mathematics and of the utility of mathematics. However, the manner in which the participants conceptualized mathematics tended to lack breadth, often focusing on arithmetic and financial mathematics. Similar conceptions of mathematics were evident in the media representations. Moreover, media portrayals of mathematicians and mathematically proficient people tended to perpetuate stereotypes. Despite their awareness of these stereotypes, the participants often lacked alternative representations to challenge these views. Indeed, the lack of exposure to a variety of representations of both mathematics and mathematicians contributed to the participants’ reliance on views that were often narrow and stereotypical.

The biological mechanisms proposed to underlie primary mood disorder do not usually include a neuropathological component. Over recent years, a significant imaging literature attests to structural abnormalities in various brain regions in mood disorder, and has encouraged neuropathological investigations. Although the neuropathological understanding of mood disorder is still rudimentary, structural correlates have begun to emerge. The studies described in this thesis investigate the neuropathology of the anterior cingulate cortex in mood disorder. The anterior cingulate cortex is extremely diverse and complex, particularly in respect to its cytoarchitecture and functional organisation. These details are important when considering the precise localisation and clinical correlates of the neuropathological changes of this region in disease. Accordingly, I performed a detailed analysis of the cytoarchitecture of the human anterior cingulate cortex, as a prelude to investigations of this region in mood disorder. I measured several morphometric parameters within different anatomical levels and both hemispheres of the anterior cingulate cortex. Overall I found a clear distinction in the cellular composition of the supragenual and subgenual regions of the anterior cingulate cortex. The subgenual region demonstrated a lower glial density and smaller neurons in comparison to the supragenual region. A modest difference in neuronal density was also observed, with a higher density in the deep layers of the subgenual cortex compared to the deep layers of the supragenual cortex. Total cortical depth was also thinner in the subgenual region. This work may have important implications for the interpretation of imaging and pathological data in mood disorder. To assess the cytoarchitecture of this brain region in mood disorder, I examined several morphometric indices in addition to various parameters of gene expression in post mortem brains. I found a range of cytoarchitectural abnormalities in the supragenual anterior cingulate cortex in mood disorder. The most prominent change included a reduction in glial density, which was evident in all layers of the cortex. Glial fibrillary acidic protein was also reduced, providing some evidence for astrocyte involvement. Various neuronal changes were also observed in the mood disorder group. These included layer-specific reductions in pyramidal neuron density and a modest change in the density of cairetinin-immunoreactive neurons. I did not find any evidence supporting synaptic pathology in the anterior cingulate cortex in mood disorder. These findings extend previous evidence of cytoarchitectural alterations in the anterior cingulate cortex in mood disorder and in particular emphasise the prominent involvement of glial cells in the neuropathology of this disease. The origins of the glial (and neuronal) deficits in mood disorder remain to be established, but they are likely to have pathophysiological consequences.

With the rise of mobile computing and an ever-growing variety of ubiquitous sensors, computers are becoming increasingly context-aware. A revolutionary step in this process that has seen much progress will be user-awareness: the ability of a computing device to infer its user's emotions. This research project attempts to study the effectiveness of enabling a computer to adapt its visual interface to counter user frustration. A two-group experiment was designed to engage participants in a goal-oriented task disguised as a simple usability study with a performance incentive. Five frustrating stimuli were triggered throughout a single 15-minute task in the form of complete system unresponsiveness or delay. An algorithm was implemented to attempt to detect sudden rises in user arousal measured via a skin conductance sensor. Following a successful detection, or otherwise a maximum of a 10-second delay, the application resumed responsiveness. In the control condition, participants were exposed to a “please wait” pop-up near the end of the delay whereas those in the adaption condition were exposed to an additional visual transition to a user interface with calming colours and larger touch targets. This proposed adaptive condition was hypothesized to reduce the recovery time associated with the frustration response. The experiment was successfully able to induce frustration (via measurable skin conductance responses) in the majority of trials. The mean recovery half-time of participants in the first trial adaptive condition was significantly longer than that of the control. This was attributed to a possibility of a large chromatic difference between the adaptive and control colour schemes, habituation and prediction, causal association of adaptation to the frustrating stimulus, as well as insufficient subtlety in the transition and visual look of the adaptive interface. The study produced findings and guidelines that will be crucial in the future design of adaptive affective user interfaces.

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Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 227-244).

Thesis (M.D.)--University of Adelaide, 1986. / Includes bibliographical references (leaves 317-350).

Thesis (Ph. D.)--University of Wyoming, 2005. / Title from PDF title page (viewed on Nov. 5, 2007). Includes bibliographical references (p. 60-70).