Cette thèse examine la relation complexe et la causalité entre la migration et le développement, sujet d'actualité vus les flux croissants de migrants et les transferts de fonds privés. La revue de la littérature théorique et empirique montre la complexité de cette relation, et l’absence de consensus dégagé par les travaux menés sur les causes et les effets de la migration sur le développement. Sur les causes de migration, une première estimation empirique montre qu’elle fait partie intégrante du processus de développement et n’est donc pas une simple conséquence de faibles niveaux de développement: le niveau de développement des pays d'origine s’accroissant, les aspirations et les capabilités des populations augmentent et si celles-ci font face à l'absence d’opportunités, elles vont migrer à condition d’en avoir les capabilités (compétences requises, moyens financiers, politiques de migration, etc.). Concernant l’impact de la migration, une deuxième estimation empirique montre un effet positif sur le développement via les transferts privés. Les modèles indiquent que leur contribution se fait à travers deux principaux canaux, l'investissement en capital et le capital humain (éducation et santé), lesquels sont susceptibles de permettre un développement à long terme des pays d'origine. Au niveau micro, une troisième série de modèles étudie le mécanisme de cet impact au niveau de ménages, à partir du cas de l'Egypte. Ces modèles confirment l'importance des transferts privés sur les niveaux d'éducation et de santé dans les ménages qui les reçoivent. Ces résultats sont censés contribuer à la compréhension de cette relation complexe entre migration et développement. / This thesis is concerned with the causal and complex relation between migration and development. A timely subject, especially with increasing flows of migrants and the remittances these migrants send home. Both the theoretical and empirical literature reviews address the complexity of this relation but consensuses on the causes and impacts of migration on development are generally inconclusive. On the causes of migration, our first empirical estimation shows that migration is part of the development process and not a simple result of its low levels: the increasing development level of the home countries increase the aspirations and capabilities of their populations and if these are faced with lack of opportunities at home, individuals seek migration provided they have the right capabilities (skills required, financial means, migration policies, etc.). On the impact of migration, our second empirical estimation gives evidence of a positive impact through remittances on the development of the home countries. The models show the positive contributions of remittances towards development through two main channels: capital investment and human capital (education and health). These two channels are believed to achieve long-term development of the home countries. At the micro level, we look at the mechanism of this impact at the household level, addressing the case study of Egypt. Our third models give evidence of the importance of these remittances in increasing both education and health status of the recipients’ households’. These findings are believed to make a contribution towards the understanding of this complex relation between migration and development.

This study explores the changing nature of filial piety in contemporary society in rural China. With the economic, social and political upheavals that followed the Revolution, can 'great peace under heaven' still be found for the rural Chinese family as in the traditional Confucian proverb,"make yourself useful, look after your family, look after your country, and all is peaceful under heaven"? This study explores this question, in terms not so much of financial prosperity, but of non-tangible cultural values of filial piety, changing familial and gender roles, and economic migration. In particular, it examines how macro level changes in economic, social and demographic policies have affected family life in rural China. The primary policies examined were collectivisation, the hukou registration system, marketization, and the One-Child policy. Ethnographic interviews reveal how migration has affected rural family structures beyond the usual quantifiable economic measures. Using the village of Meijia, Sichuan province, as a paradigmatic sample of family, where members have moved to work in the cities, leaving their children behind with the grandparents, the study demonstrates how migration and modernization are reshaping familial roles, changing filial expectations, reshuffling notions of care-taking, and transforming traditional views on the value of daughters and daughters-in-law. The study concludes that the choices families make around migration, child-rearing and elder-care cannot be fully explained by either an income diversification model or a survival model, but rather through notions of filial piety. Yet the concept of filial piety itself is changing, particularly in relation to gender and perceptions about the worth of daughters and the mother/ daughter-in-law relationship. Understanding these new family dynamics will be important for both policy planners and economic analysts.