Les difficultés de théorie de l’esprit (ToM) associées à la schizophrénie (SZ) et la schizotypie (Szt) seraient dues à un trouble élémentaire de traitement du contexte. Or, traiter le contexte engagerait deux types de processus inégalement atteints dans la SZ: les processus prédictifs (génération de prédictions) seraient préservés et les processus intégratifs (intégration a posteriori des informations nouvelles avec le contexte) seraient altérés. Ces processus sont mobilisés lors de la production d’inférences et reflétés par la modulation de la N400 ou de la P600. À l’aide de mesures comportementales et électrophysiologiques, l’objectif de ce travail était de: a) vérifier l’inégale atteinte de ces processus dans la Szt, b) évaluer si ce pattern d’inégale atteinte est observé lors d’une tâche de production d’inférences intentionnelles (PII), c) faciliter la mobilisation des processus altérés par le renforcement du contexte (sémantique, ajout d’un indice social). L’étude réalisée avec un paradigme d’amorçage sémantique en contexte mot confirme l’altération spécifique des processus intégratifs dans la Szt. La suite des études, conduite autour d’une tâche de PII reposant sur les processus prédictifs ou intégratifs dans la SZ et la Szt, montre: 1) des difficultés de PII lorsqu’elle mobilise les processus intégratifs, 2) une réduction de ces difficultés par le renforcement sémantique et 3) que l’ajout d’un indice social pourrait faciliter le traitement du contexte. Ainsi, la PII n’est pas totalement altérée dans la Szt et la SZ. Les études futures devraient considérer cette inégale atteinte des processus en ToM pour aider les patients à attribuer des intentions à autrui. / Theory of mind (ToM) impairments in schizophrenia (SZ) and in schizotypy (Szt) may stem from a context-processing deficit. However, treating the context would involve two types of processes differently affected impacted in SZ: predictive strategy (generation of expectations) would be preserved and integrative strategy (retroactive integration of new information with the context) would be altered. These processes are mobilized during inference generation tasks and reflected by modulations of the N400 and P600 components. Using behavioral and electrophysiological measures, the aim of this thesis was to: (a) confirm the unequal alteration of these processes in the Szt, (b) assess whether this pattern of unequal alteration is observed in intentional inference production tasks (IIP), and (c) facilitate the mobilization of altered processes by increasing the contextual constraints (semantic constraint, contextual reinforcement by social cue). Using a semantic priming task in word context, a first study showed that integrative processes are specifically altered in Szt. Subsequent studies were based on IIP task in which the inference production involved predictive processes or integrative processes. Results showed that: (1) difficulties were observed only when IIP involved integrative processes, (2) semantic constraints decreased these difficulties and (3) context processing may be facilitated by the addition of a social cue. Thus, IIP is not totally altered in Szt and SZ. Future studies should consider this unequal impact of ToM processes to help patients attribute intentions to others.

The purpose of this study was to explore the Zimbabwean physics teachers’ interpretation of the Advanced Level Physics curriculum. The study was motivated by the teachers’ lacklustre approach to adopting new practices and the poor alignment of their understanding with the practice envisaged by developers (Fullan, 2007:39; Ndawi&Maravanyika, 2011:68). Zimbabwean Advanced Level physics teachers are in this predicament, as evidenced by the low numbers of undergraduate students and the misconceptions displayed by physics learners enrolling for first year university work in physics-related disciplines (Kazembe and Musarandega, 2012:4). Having an idea of physics teachers’ perceptions, experiences and current practices with regard to the revised Advanced Level physics curriculum maybe fertile ground for intervention measures and policy decisions. To obtain a more holistic picture of the physics teachers’ practices, a mixed methods research approach using the convergent parallel research design was adopted for the study. A closed survey questionnaire was used to solicit for information from 56 physics teachers in four educational provinces. Random sampling was used to select the survey respondents. From these participants, 10 were purposively selected for face-to-face in-depth structured interviews basing on their availability and accessibility. Ten schemes of work,one from each interviewed teacher, for one school term and six past examination practical paper 4 question papers were collected and analysed using a document analysis guide. Quantitative data was analysed using descriptive statistics and chi-square, whereas qualitative data was collated into themes for discussion purposes. The findings of the study reveal that the physics teachers have embraced the ideals of the physics curriculum and adapted it to their operating context through the reiterative interpretation process to construct personal meaning. The teachers are mainly utilising teacher-centred approaches to impart knowledge to the learners which is not consistent with the physics curriculum anticipations of using learner-centred approaches. The physics teachers are superficially interpreting the physics curriculum.The physics teachers need to embrace the learner centred teaching approach andbe empowered to enhance their curriculum interpretation and teaching practices through staff development. / Curriculum and Instructional Studies / D. Ed. (Curriculum Studies)