Submitted in fulfillment of the requirements of the Degree of Doctor of Technology: Business Administration, Durban University of Technology, 2014. / This thesis integrates social capital and ‘reasoned action’ theory to construct a theoretical model for investigating the factors which predict an individual’s intention to share tacit knowledge in a University of Technology. It utilizes Nahapiet and Ghoshal (1998: 243) definition and conception of social capital. They define social capital as “the sum of the actual and potential resources embedded within, available through, and derived from the network of relationships possessed by an individual or social unit”. This study examined tacit knowledge sharing behaviour (i.e., knowledge that is shared between individuals) within the context of social capital. The specific type of tacit knowledge that is being studied relates to work experience ‘know-what’ and ‘know-how’. ‘Know-what’ refers to the basic mastery of a discipline that professionals achieve through education and training. ‘Know-how’ refers to procedural knowledge about a business process and the individual’s capability to perform an action with an understanding of why the action is appropriate in the particular context, (i.e., action skill or applied competence). Specifically, this study examines the relationship between the structural, relational and cognitive dimensions of social capital and the individual’s attitude towards the sharing of tacit knowledge. It further examines the relationship between the individual’s attitude towards tacit knowledge sharing, their perceived norms and perceived behavioural control over the sharing of tacit knowledge (mediating variables) and their intention to share tacit knowledge. It is a case study which consists of a mixed methods research design, incorporating nine research interviews and five hundred and fifty four self administered questionnaires. The theoretical model is examined using structural equation modeling (SEM) and as a result of the findings, the initial model is revised into a set of theoretical models, which are tested using SEM and found to be consistent with the data (i.e., a good fit). The direct, indirect and total effects of the identified predictor (social capital) and mediating variables (‘reasoned action’) on the individual’s intention to share tacit knowledge, in each model, is examined and the results are presented. Each dimension of social capital is found to be significant for predicting the criterion variable ‘attitude towards tacit knowledge sharing’. The individual’s attitude towards tacit knowledge sharing is found to be highly significant for predicting the individual’s intention to share tacit knowledge but the ‘reasoned action’ variables are found to be not as significant, particularly perceived behavioural control over the sharing of tacit knowledge. The results of this study enrich our collective understanding regarding social capital and tacit knowledge sharing behaviour.

Sustainability, and especially sustainable consumption, has become more important throughout the years in line with the challenges of climate change. A large majority of Swedish consumers have a positive attitude towards sustainable consumption. However, their actions do not speak louder than words. Many have the intention of buying sustainable products, but fewer actually buy sustainable products causing an attitude behaviour gap. This study aims to investigate the relation between green marketing and consumer decision making. Diving deeper into the grocery sector as well as the clothing sector the study examines the differences regarding the matter of green marketing and consumer decision-making.  With a theoretical starting point in the Theory of Planned Behaviour as well as green marketing, this quantitative study shows that green marketing has an effect on a consumer’s perceived behavioural control which in turn has an effect on the intention. However, the study also states that there is a gap between the intention of buying sustainable products, influenced by attitude, subjective norm and perceived behavioural control, and the actual behaviour to buy sustainably. The study finds a moderately strong correlation between perceived behavioural control and green marketing. Further on, the study also notices a difference between the two sectors, where consumers are reached as well as affected by green marketing to a higher extent within the grocery sector than in the clothing sector.

The quantity and variety of product information available online today has increased significantly in recent years. This situation has exacerbated user information overload perceptions and made it difficult for online shoppers to choose between various online products and services. This is especially true for older adults, who typically have limitations in cognitive abilities due to the natural aging process and, as such, may perceive additional difficulties processing large amounts of information online. In response, Recommendation Agents (RAs) have become popular as decision support tools for online consumers in general, and older adults in particular. However, in the information systems literature, there is a lack of understanding regarding the design of RAs to suit the needs of different segments of the population, including older adults. Grounded in the theory of planned behaviour, and the “aging and IS adoption” literatures, this study investigates the impact of cognitive age and RA comprehensiveness on user perceptions towards the complexity of the input and output stages of an RA, and their subsequent impact on the antecedents of a user’s intention to utilize the RA for online shopping. This experimental study finds that: (i) an individual’s cognitive age significantly increases perceived RA input and output complexity perceptions; (ii) higher levels of RA comprehensiveness increases a user’s RA input and output complexity perceptions significantly; (iii) RA output complexity plays a more critical role than RA input complexity in shaping user perceptions of the overall complexity of an RA; and, (iv) increased levels of RA comprehensiveness increases individual perceptions of RA usefulness. Additionally, and as expected, cognitive age moderates the relationship between RA comprehensiveness and input/output complexity such that the effect is stronger for older adults. Surprisingly, however, cognitive age also moderates the relationship between RA comprehensiveness and perceived RA usefulness such that it is stronger for older adults. Theoretically, this study helps us to better understand how different levels of RA comprehensiveness, in terms of both the input and output stages of the RA operation, impact the intention of users of different cognitive ages to use online RAs. For practitioners, the results highlight the importance of customizing the design of RAs, in both their input and output stages, for consumers with different cognitive ages. / Thesis / Doctor of Philosophy (PhD)

Submitted in fulfillment of the requirements of the Degree of Doctor of Technology: Business Administration, Durban University of Technology, 2014. / This thesis integrates social capital and ‘reasoned action’ theory to construct a theoretical model for investigating the factors which predict an individual’s intention to share tacit knowledge in a University of Technology. It utilizes Nahapiet and Ghoshal (1998: 243) definition and conception of social capital. They define social capital as “the sum of the actual and potential resources embedded within, available through, and derived from the network of relationships possessed by an individual or social unit”. This study examined tacit knowledge sharing behaviour (i.e., knowledge that is shared between individuals) within the context of social capital. The specific type of tacit knowledge that is being studied relates to work experience ‘know-what’ and ‘know-how’. ‘Know-what’ refers to the basic mastery of a discipline that professionals achieve through education and training. ‘Know-how’ refers to procedural knowledge about a business process and the individual’s capability to perform an action with an understanding of why the action is appropriate in the particular context, (i.e., action skill or applied competence). Specifically, this study examines the relationship between the structural, relational and cognitive dimensions of social capital and the individual’s attitude towards the sharing of tacit knowledge. It further examines the relationship between the individual’s attitude towards tacit knowledge sharing, their perceived norms and perceived behavioural control over the sharing of tacit knowledge (mediating variables) and their intention to share tacit knowledge. It is a case study which consists of a mixed methods research design, incorporating nine research interviews and five hundred and fifty four self administered questionnaires. The theoretical model is examined using structural equation modeling (SEM) and as a result of the findings, the initial model is revised into a set of theoretical models, which are tested using SEM and found to be consistent with the data (i.e., a good fit). The direct, indirect and total effects of the identified predictor (social capital) and mediating variables (‘reasoned action’) on the individual’s intention to share tacit knowledge, in each model, is examined and the results are presented. Each dimension of social capital is found to be significant for predicting the criterion variable ‘attitude towards tacit knowledge sharing’. The individual’s attitude towards tacit knowledge sharing is found to be highly significant for predicting the individual’s intention to share tacit knowledge but the ‘reasoned action’ variables are found to be not as significant, particularly perceived behavioural control over the sharing of tacit knowledge. The results of this study enrich our collective understanding regarding social capital and tacit knowledge sharing behaviour. / Academy of Management, National Research Foundation, Durban University of Technology

The aim of this study was to identify factors affecting facility-based delivery with the purpose of developing a framework for the promotion of facility-based delivery among women living in rural Ethiopia. Explanatory mixed methods design, comprising of four phases-the descriptive (quantitative), explorative (qualitative), meta-inference and development phases was employed. The quantitative phase was conducted first using a structured questionnaire to identify the variables influencing facility-based delivery care seeking behaviour. A sample of 389 responses were used for data analysis using Structural Equation Modeling. The quantitative phase conducted next to explain the determinants that contributed to influencing facility-based delivery care seeking behaviour. Sixteen participants who were involved the first phase were involved in the follow-up second phase. As illustrated by the results of the study, the majority of women in the study areas continued to deliver at home, putting themselves at risk of dying from pregnancy related causes. As highlighted by the key findings from the quantitative and qualitative data of this study, the most influential factors in predicting and explaining delivery care seeking behaviour are response efficacy, attitude, subjective norm, and perceived behavioural control which are shaped by mothers’ confidence in the outcome, quality of care, interpersonal relations with family members, willingness to conform, access to services, and their decision making power. The way these findings emphasized the factors attitude, subjective norm and perceived behavioural control were consistent with the Theory of Planned Behaviour, while the significance of response efficacy was in line with Protection Motivation Theory. The study developed a framework to help promote facility-based delivery among mothers living in rural Ethiopia. / Health Studies / D. Litt. et Phil. (Health Studies)

This study applied the theory of reasoned action (TRA) and its extension, the theory of planned behaviour (TPB) to the design of a workplace HIV/AIDS health promotion programme. The purpose of the study was to determine if the variables of the TRA and TPB would predict intentions to change HIV/AIDS health behaviour, whether a theory-based intervention would result in health behaviour change over time and if there would be any significant health behaviour differences among participants who received a theory-based intervention and those who received an information-only intervention. In a longitudinal, quasi-experimental study, 170 government employees were divided into two groups. One group comprised 92 employees who participated in a HIV/AIDS health promotion workshop based on the theories of reasoned action and planned behaviour. The other group comprised 78 employees who took part in an educational information session about HIV and AIDS. An elicitation study was conducted with a sample of 38 employees from the research population two months prior to the commencement of the study. The findings of the elicitation study informed the design of research questionnaires and an intervention workshop. Both groups of participants (theory-based workshop and information-only workshop) were measured on HIV/AIDS health behaviour intentions and HIV/AIDS health behaviour (condom use, seeking HIV testing and monogamy) across three measurement periods over a six month period. The results of the study showed that the combined theoretical variables predicted intentions to use condoms and to seek HIV testing, with attitudes having the main effect on intentions. There was, however, no significant health behaviour change across the three measurement periods. There were also no health behaviour differences between the two intervention conditions at one month and six months post-intervention. The study concludes that the intervention based on the theories of reasoned action and planned behaviour did not produce health behaviour change. The study also identified barriers to AIDS health behaviour in the South African context that the theories of reasoned action and planned behaviour cannot explain. Ways in which the theories of reasoned action and planned behaviour can be adapted to HIV/AIDS education in collectivist cultures are proposed. / Psychology / Thesis (D. Phil. (Psychology))

Ghana subscribed to the global target of reaching at least 50% of exclusive breastfeeding in the first six months of birth by the year 2030. Policies and programmes to promote exclusive breastfeeding have been formulated and implemented in the country. In spite of these efforts, existing evidence showed that the rate of exclusive breastfeeding in the first six months post-delivery has been declining over the past decade. It was therefore important to understand behavioural factors that influence exclusive breastfeeding among teenage-mothers and propose a behavioural conceptual model based on the understanding of exclusive breastfeeding from the perspective of the teenage-mothers and their social environments. The study was conducted in three phases using multistrand mixed methods within the pragmatism philosophical framework. The Theory of Planned Behaviour and the six steps framework for developing models to address public health issues were used as frameworks in the study. In the first phase, the researcher used qualitative exploratory descriptive design to gain an understanding of the behavioural determinants of exclusive breastfeeding from the perspective of teenagers aged between 13 - 19 years attending antenatal care services at public facilities. Data were generated through focus group discussions and analysed using Group-level thematic and content analysis. In the second phase, longitudinal descriptive correlational designs were used to establish the relationships between the exclusive breastfeeding intentions during the prenatal period and actual breastfeeding practices at six months post-delivery. Structured questionnaires were used to collect data during the last visit of antenatal care visits and six months post-delivery. Data generated were analysed through descriptive inferential statistics. In the last phase, the researcher used meta-inferences to identify the key concepts of conceptual model from the integrated qualitative and quantitative results. Theoretical triangulations were used to define and establish relationships between the concepts and to structure the conceptual model. The integrated results of the two phases of the study showed that exclusive breastfeeding practices among teenage-mothers within the social context of Ghana are determined by certain personal and social related behavioural factors. The approval of the exclusive breastfeeding practice by the teenagers’ mothers and nurses/midwives’ capabilities to provide effective breastfeeding education were the strongest determinants of exclusive breastfeeding up to six months among teenage-mothers in Ghana. From these results, the researcher proposed an integrated behavioural conceptual model that provides an understanding of exclusive breastfeeding practice and the process of promoting exclusive breastfeeding among teenage-mothers in the social context of Ghana. The findings of this study have implications for public health policy-makers, health services managers, health sciences education and further research. / Health Studies / D. Lit. et Phil. (Health Studies)

This study applied the theory of reasoned action (TRA) and its extension, the theory of planned behaviour (TPB) to the design of a workplace HIV/AIDS health promotion programme. The purpose of the study was to determine if the variables of the TRA and TPB would predict intentions to change HIV/AIDS health behaviour, whether a theory-based intervention would result in health behaviour change over time and if there would be any significant health behaviour differences among participants who received a theory-based intervention and those who received an information-only intervention. In a longitudinal, quasi-experimental study, 170 government employees were divided into two groups. One group comprised 92 employees who participated in a HIV/AIDS health promotion workshop based on the theories of reasoned action and planned behaviour. The other group comprised 78 employees who took part in an educational information session about HIV and AIDS. An elicitation study was conducted with a sample of 38 employees from the research population two months prior to the commencement of the study. The findings of the elicitation study informed the design of research questionnaires and an intervention workshop. Both groups of participants (theory-based workshop and information-only workshop) were measured on HIV/AIDS health behaviour intentions and HIV/AIDS health behaviour (condom use, seeking HIV testing and monogamy) across three measurement periods over a six month period. The results of the study showed that the combined theoretical variables predicted intentions to use condoms and to seek HIV testing, with attitudes having the main effect on intentions. There was, however, no significant health behaviour change across the three measurement periods. There were also no health behaviour differences between the two intervention conditions at one month and six months post-intervention. The study concludes that the intervention based on the theories of reasoned action and planned behaviour did not produce health behaviour change. The study also identified barriers to AIDS health behaviour in the South African context that the theories of reasoned action and planned behaviour cannot explain. Ways in which the theories of reasoned action and planned behaviour can be adapted to HIV/AIDS education in collectivist cultures are proposed. / Psychology / Thesis (D. Phil. (Psychology))

With recent advances in technology, distance education has seen a move towards online and e-learning programmes and courses. However, many students in South Africa have limited access to computer technology and/or the Internet resources necessary for online learning. Worldwide trends have recently seen a growing emphasis on the use of mobile technology for learning purposes. High mobile penetration rates in South Africa means that mobile learning can potentially overcome many of the challenges associated with distanceand online learning. This research therefore aimed to explore adult distance education students’ mobile learning readiness in the South African context. Specifically, this study examined the influence of mobile learning self-efficacy, locus of control, subjective norm, perceived usefulness, perceived ease of use, perceived behavioural control and attitude towards mobile learning on students’ behavioural intention to adopt mobile learning. In order to test a model predicting students’ behavioural intention, the conceptual framework guiding the investigation combined the Technology Acceptance Model (TAM) and the Theory of the investigation combined the Technology Acceptance Model (TAM) and the Theory of Planned Behaviour (TPB) and extended the model to include locus of control and mobile learning self-efficacy. A sample of 1070 students from a private higher education institution in South Africa participated in this study. Data were collected using an online survey questionnaire. Multiple regression analysis indicated that perceived ease of use contributed most significantly to behavioural intention to adopt mobile learning, followed by attitude towards mobile learning, subjective norm, perceived usefulness, perceived behavioural control and locus of control. Mobile learning self-efficacy did not significantly influence behavioural intention to adopt mobile learning. Overall, the model accounted for 44.8% of the variance in behavioural intention to adopt mobile learning. Significant differences in age, gender, race and household income existed with regard to several of the psychological constructs hypothesised to influence behavioural intention to adopt mobile learning. 4 Structural equation modelling was used to examine the fit between the data and the proposed model. The chi square goodness for fit test and the RMSEA indicated poor fit between data and model. Considering the sensitivity of the chi square statistic for sample size and the negative influence of too many variables and relationships on the RMSEA, a variety of alternative fit indices that are less dependent on the sample size and distribution were used to examine model fit. The GFI, AGFI, NFI and CFI all exceeded their respective acceptable levels, indicating a good fit with the data. / Psychology / M.A. (Psychology)

Text in English / An increasingly recognised prevention approach for substance use entails reduction in risk factors and enhancement of promotive or protective factors in individuals and the environment surrounding them during their growth and development. However, in order to enhance the effectiveness of this approach, continuous study of risk aspects targeting different cultures, social groups and mixture of society has been recommended. This study evaluated the impact of potential risk and protective factors associated with family management and relations on adolescent substance abuse in South Africa. Exploratory analysis and cumulative odds ordinal logistic regression modelling was performed on the data while controlling for demographic and socio-economic characteristics on adolescent substance use. The most intensely used substances were tobacco, cannabis, cocaine, heroin and alcohol in decreasing order of use intensity. The specific protective or risk impact of family management or relations factors varied from substance to substance. Risk factors associated with demographic and socio-economic factors included being male, younger age, being in lower education grades, coloured ethnicity, adolescents from divorced parents and unemployed or fully employed mothers. Significant family relations risk and protective factors against substance use were classified as either family functioning and conflict or family bonding and support. Several family management factors, categorised as parental monitoring, discipline, behavioural control and rewards, demonstrated either risk or protective effect on adolescent substance use. Some factors had either interactive risk or protective impact on substance use or lost significance when analysed jointly with other factors such as controlled variables. Interaction amongst risk or protective factors as well as the type of substance should be considered when further considering interventions based on these risk or protective factors. Studies in other geographical regions, institutions and with better gender balance are recommended to improve upon the representativeness of the results. Several other considerations to be made when formulating interventions, the shortcomings of this study and possible improvements as well as future studies are also suggested. / Psychology / M. A. (Psychology)