Cette recherche a été menée auprès d'étudiants de Classes Préparatoires aux Grandes Ecoles Scientifiques. Un de ses objectifs est d'analyser l'influence des variables motivationnelles sur la performance académique. L’auto-efficacité académique, l’orientation des buts et la motivation autodéterminée sont souvent citées pour leur rôle majeur dans la réussite universitaire. Ces variables sont issues de cadres théoriques distincts et nous souhaitons étudier comment elles s'influencent mutuellement. Des outils psychométriques, dont une échelle d’auto-efficacité académique, ont été créés et validés. Des analyses en pistes causales ont été effectuées afin de proposer un modèle traduisant les influences qui existent entre variables motivationnelles et performances académiques.Nos résultats montrent que :- l’auto-efficacité est la seule variable motivationnelle à avoir une influence directe sur les performances académiques ;- le but d’approche de la maîtrise est sous influence de l’auto-efficacité et une orientation vers ce type de but influence positivement la motivation intrinsèque et négativement l’amotivation ;- le but d’approche de la performance a une influence positive sur les différentes formes de motivation extrinsèque et, parmi ces dernières, la motivation extrinsèque à régulation identifiée influence positivement l’auto-efficacité tandis que la motivation extrinsèque à régulation externe l’influence négativement ;- l’amotivation influence négativement l’auto-efficacité académique ;- l’impact de l’amotivation sur les performances académiques est totalement médiatisée par l’auto-efficacité.Des prolongements de cette étude et certaines applications sont proposés. / This research has been carried out among French science students enrolled in CPGE (Classes Préparatoires aux Grandes Ecoles). One of its objectives is to study how motivational variables influence academic achievement. Academic self-efficacy, achievement goals or self-determined motivation are reported to play an important part in academic achievement. By relating self-efficacy, goal orientations and motivation, as conceptualized in self-determination theory, to both preceding and subsequent academic achievement, it is possible to further investigate the structural relation between these variables. Therefore, we aim at analysing the mutual influences which exist among them.Psychometric tools, among which an academic self-efficacy scale, were created and validated. Path analysis were performed in order to produce a multivariate model including motivational variables, previous academic performance and subsequent academic achievement. Our results showed that:- self-efficacy is the only motivational variable that directly influences academic achievement; - mastery approach goal, which is influenced by self-efficacy, enhances intrinsic motivation but is negatively related to amotivation;- performance approach goal enhances extrinsic motivation and identified regulated extrinsic motivation is positively related to self-efficacy while externally regulated extrinsic motivation is negatively related to it;- amotivation is negatively related to self-efficacy;- Self-efficacy beliefs are mediators between amotivation and subsequent academic achievement.Future research could build on these findings. Suggestions of applications are provided.

Multimedia is a form of communication and sharing knowledge using synergic effect of parallel connected communication channels. Its main use is in producing communications products and services and in design of user interfaces. Main objective of this dissertation is to develop and create a model of multimedia communication for better understanding of the meaning and the purpose of using multimedia forms in communication process. The model will describe a system of elements and parameters of multimedia communication within the internal and external context. Another objective of this dissertation is to develop multimedia communication methodology that will be used for the design, development and evaluations of concepts of multimedia communication. The methodology will be created by applying the model of multimedia communication into the procedure structure. In theoretical way this dissertation is based on analysis of different definitions and approaches to the multimedia communications topic. This is followed by an analysis of communication theories, concepts of media, multimedia, delivery channels, and communication functions. The theoretical part is followed by the outcomes of the research in practice of four different fields of multimedia use. The knowledge gained is analyzed in the following parts in purpose of creating the model of multimedia communication and the methodology which is derived from the model. The methodology is further validated through case studies and the recommendations for further development are formulated. The model and the methodology of multimedia communication created in this dissertation present complex view on multimedia communication topic that is considered as a useful tool for meeting a specific communication purpose. Dissertation provides mechanics for use and study of multimedia communication and also defines the opportunities for further development of the methodology.

The purpose of this study was to determine factors affecting non-adherence to Anti-retroviral therapy among AIDS patients. A cross sectional quantitative survey, was used. Structured interviews were conducted with 300 ART patients. Data were analysed using SPSS version 13 and presented in charts, graphs and frequency tables. Motivators of good adherence were identified as disclosure of HIV positive status to more than one person, frequent adherence counselling, self-efficacy to adhere to ART, positive interactions between patients and healthcare providers; and using an adherence partner. Barriers to adherence were forgetfulness, transportation costs to and from the clinic, time away from work and side effects. There was a strong positive correlation between adherence, CD4 counts and viral load. Adherence was closely tied to immunologic and virologic improvements. Respondents with poor adherence were likely to have unsuppressed viral loads (OR 12.98, 95%, CI 4.9-34). / Health Studies / Masters of Public Health

High school students need to be equipped with the competencies that may enable them to adapt to the increasing demands of learning in the school and beyond. To this end, the main research question of this study was, namely How can the self-regulated learning of adolescents be developed at high school? The aim of the study was to design, implement and evaluate a study skills programme for high school students. The social-cognitive theory, in particular the self-regulated Learning (SRL) theory, was used as the conceptual framework on which this study was based. An explanatory, sequential, mixed-methods research design was implemented. Purposeful sampling was used to select the participants in the three phases of the research project. Two classes of Grade 10-students (an experimental and a comparison group) from one school participated in the study, as follows: (i) in the first quantitative phase both classes wrote a pre-test, using the Learning and Strategies Inventory - High School Version (LASSI-HS); (ii) this was followed by a qualitative phase over 10 weeks. During this time a programme was implemented with the experimental group, once per week for 30 minutes (during school hours), and a 30 minute session in the afternoons. Individual work was also done with eight students, who were purposefully sampled. Between one and four sessions were held with each of the eight students. During the 10 weeks data were collected continuously by means of individual interviews with the eight students, as well as from their journals. In addition, the researcher collected data by means of field-notes. (iii) After the 10 weeks, the final quantitative phase involved both the experimental and the comparison groups in the writing of a post-test. The results indicated that the programme to enhance the students’ goal-setting, self-monitoring and self-evaluation strategies was successful. The students also indicated an improvement in their attitudes, motivation, information-processing, and in selecting the main ideas in their study material. However, shortcomings were noted in certain areas. Based on the literature and the empirical findings of the study, an improved programme for the development of the adolescents’ SRL in high school was designed. The programme recommended the early commencement of the programme, and that the two problem areas that were identified, namely time-management and motivational strategies be emphasised. / Psychology of Education / D. Ed. (Psychology of Education)

Despite HIV and AIDS knowledge and attitude change programmes, workplace HIV and AIDS-related discrimination persists in workplaces in many sectors, including the education sector. This study set out to investigate why the phenomenon of workplace HIV and AIDS-related discrimination persists; and to predict which factors were responsible and how they related to HIV and AIDS-related discrimination in the workplace. A stratified random sample of 205 teachers; 123 of whom were from 10 schools of varied backgrounds in Bojanala Region of North West Province of South Africa and 82 from schools around Kampala, Central Region of Uganda was drawn. Twenty-seven respondents of the South African sample participated in both the quantitative survey and in-depth interview while the rest responded to a selfadministered questionnaire. Using a stepwise regression analysis, traditional beliefs predicted workplace HIV and AIDS-related discrimination, explained11% of variance in the second model while the third model explained only 2% more – 13% (R square of 0.136) but each of the three models was significant (p-values of 0.000). Attitudes were the second strongest predictor; and only HIV and AIDS-legal knowledge could predict discrimination but not biomedical HIV and AIDS knowledge. In the in-depth interview, incidents of discrimination were reported, possible reasons for HIV and AIDS-related discrimination were reported; and it was found that workers varied in ways of keeping secrets regarding sensitive information such as colleagues’ HIV-positive status, and cited reasons for revealing such information which included malice, jealousy, moral responsibility, anger and loose talks. There are implications for reducing workplace HIV and AIDS-related discrimination which include: Integrating HIV and AIDS-legal knowledge with biomedical HIV and AIDS knowledge, more efforts should be spent in designing and imparting information to reduce traditional beliefs, develop and evaluate instruments to measure traditional beliefs and HIV and AIDS-legal knowledge; and to study more about secret keeping, particularly in regard to workplace HIV and AIDSrelated discrimination. / Industrial and Organisational Psychology / D. Admin. (Industrial and Organisational Psychology)

Abstract in English, Afrikaans and Xhosa / Blended learning is referenced as the “best of both worlds” (Snart, 2010:xvi), which integrates Face-to-Face instruction with online learning. With interest in incorporating blended learning within the higher education curricula expanding, many private higher education institutions seek to understand how they can use educational technology effectively in blended learning to enhance undergraduate students’ learning engagement. This study investigated the nature and extent of private higher education students’ learning engagement in blended learning programmes within a private higher education provider. Through the lens of Bandura's (2000:121, 2009:180) Social Cognitive Theory, the study investigated private higher education students’ learning engagement in blended learning during the completion of their qualification and how it impacted teaching and learning. A descriptive quantitative research design was adopted, coupled with a positivist paradigm of inquiry. Utilising a cross-sectional survey it acquired descriptive data from a sample population of 567 respondents who answered the study’s research questions. The study found that student orientation programmes are associated with students’ perceived self-efficacy, subsequently affecting their engagement in blended learning programmes directly, and through the impact on outcome expectations, goals and socio-structural impediments. Additionally, socio-structural facilitators impacted outcome expectations and student engagement. The study’s results established a new framework, namely Social Cognitive Student Engagement in Blended Learning. / Gemengde leer word dikwels die “beste van twee wêrelde” genoem (Snart, 2010:xvi) aangesien onderrig nie alleen van aangesig tot aangesig nie, maar ook aanlyn geskied. Gesien die stygende belangstelling in die inskakeling van gemengde leer by hoëronderwysleerplanne, ondersoek talle private hoëronderwysinstellings maniere om opvoedkundige tegnologie in gemengde leer te gebruik om voorgraadse studente se leerbetrokkenheid te verbeter. In hierdie studie is ondersoek ingestel na die aard en omvang van studente se leerbetrokkenheid in die gemengdeleerprogramme wat by ʼn private verskaffer van hoër onderwys aangebied word. Hierdie studie het deur die lens van Bandura se sosiaal-kognitiewe teorie (2000:121, 2009:180) gekyk na studente se leerbetrokkenheid by gemengde leer in die verwerwing van ʼn kwalifikasie, en die uitwerking daarvan op onderrig en leer. Die navorsingsontwerp was deskriptief-kwantitatief en die ondersoekparadigma positivisties. Aan die hand van ʼn dwarssnitopname is beskrywende data by ʼn steekproefbevolking van 567 respondente ingewin. In die studie is bevind dat oriënteringsprogramme op studente se siening van hul eie selfwerksaamheid gemik is, hulle betrokkenheid by gemengdeleerprogramme verbeter, en daardeur hul uitkomsverwagtings, mikpunte en die mate waarin hulle sosiaal-strukturele struikelblokke oorkom, bepaal. Afgesien hiervan het sosiaal-strukturele fasiliteerders ʼn gunstige uitwerking op studente se uitkomsverwagtings en betrokkenheid gehad. ʼn Raamwerk is opgestel, naamlik die Sosiaal-Kognitiewe Betrokkenheid van Studente by Gemengde Leer. / Uhlelo lwemfundo ehlanganisiwe lubizwa, phecelezi nge “best of both worlds” (Snart, 2010:xvi), ukuhlanganisa umyalelo okhishwa ngendlela yokubhekana kwabantu ubuso nobuso kanye nohlelo lokufunda nge-inthanethi. Njengoba uthando lokufaka phakathi uhlelo lokufunda oluhlanganisiwe ngaphakathi kohlelo lwemfundo emazikweni aphakeme lya ngokuya lukhula nje, amaziko emfundo ephakeme amaningi angasese afuna ukuzwisisa ukuthi ngabe angabusebenzisa kanjani ngempumelelo ubuchwepheshe bethekinoloji bezemfundoi ohlelweni lwezokufunda oluhlanganisiwe ukuze kuqiniswe uhlelo lokufunda ngokuxoxisana nabafundi abasafundela iziqu zesigaba sokuqala. Lolu cwaningo luye lwaphenya ubunjalo kanye nezinga lokufunda kwabafundi ngokuxoxisana ezinhlelweni zokufunda okuhlanganisiwe ngaphakathi kweziko langasese lemfundo ephakeme. Ngokusebenzisa iso lomqondo wokufunda kaBandura (Bandura's social cognitive theory (2000:121, 2009:180), ucwaningo luye lwaphenya uhlelo lokufunda ngokuxoxisana nabafundi ohlelweni lokufunda ngokuhlanganyela ngesikhathi bephothula iziqu zabo kanye nangendlela lolu hlelo lunomthelela ngayo kwezokufundisa nokufunda. Idizayini yocwaningo oluchazayo olwencike kumanani luye lwamukelwa, ngokuthi luhambisane nohlelo lwe-positivist paradigm of inquiry. Ngokusebenzisa isaveyi i-cross-sectional survey, idatha echazayo yaqoqwa kwisampuli yenani lonke labaphenduli abayi-567. Ucwaningo luye lwathola ukuthi izinhlelo zokwamukela abafundi zihlobene nemiqondo yabafundi (students’ perceived self-efficacy), bese kulandelise ngokuthinta ngqo ukuxoxisana kwabo kwizinhlelo zokufunda ezihlanganisiwe. Ukwengeza, abahlanganisi besakhiwo somphakathi babe nomthelela phezu kwemiphumela elindelwe kanye nokuxoxisana nomfundi. Kuye kwasungulwa isakhiwo esisha, sona yilesi esilandelayo, phecelezi, Social Cognitive Student Engagement in Blended Learning. / Curriculum and Instructional Studies / M. Ed. (Curriculum Studies)

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El propósito de esta investigación es estudiar las estrategias multimediales en seis diferentes vídeos educativos de YouTube que se dirigen a aprendices de español como lengua extranjera. Con este fin, la investigación se basa en la teoría cognitiva del aprendizaje multimedial (TCAM) y diez principios postulados por Mayer (2008) que sirven para mejorar el diseño de mensajes instruccionales multimediales como vídeos educativos. A partir de las preguntas de investigación el propósito es averiguar si los vídeos estudiados siguen los principios en concordancia con la TCAM y si se utilizan diferentes estrategias para cumplir con cada principio. La metodología es cualitativa y consiste en un análisis interpretativo de los vídeos y situaciones concretas de los mismos. Las observaciones muestran que los vídeos no siguen todos los principios y por lo demás se constata que ninguno de los vídeos cumple con los principios de redundancia y modalidad puesto que todos contienen texto añadido. Asimismo, se observa que es posible llevar a la práctica varias estrategias para implementar cada principio. En cuanto a estudios futuros se sugiere que se realizan investigaciones sobre cómo aquellas estrategias afectan a los aprendices en un contexto formal, es decir, en el aula. / The purpose of this essay is to study the multimedia strategies in six different educational videos on YouTube that are made for learners of Spanish as a foreign language. To this end, the study focuses on the cognitive theory of multimedia learning (CTML) and ten principles postulated by Mayer (2008) that serve to improve the design of multimedia instructional messages, for example in educational videos. Based on the research questions, the purpose is to find out if the videos follow the principles in accordance with the CTML and if different strategies can be used to comply with each principle. The methodology is qualitative and consists of interpretative analysis of the videos and specific situations. The observations show that the videos do not follow all the principles and that none of the videos comply with the principles of redundancy and modality, since they all contain added text. Likewise, the study verifies that it is possible to put into practice several strategies to implement each principle. Regarding future studies, it is suggested that research on how those strategies affect learners in a formal context, that is, in the classroom, are carried out.

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