Second language (L2) use and acquisition are among the most complex activities in which humans engage, involving interaction between cognitive, emotional and environmental factors. The aim of this course is to introduce students to these processes, particularly as they occur in the classroom. Topics covered include theories and models of L2 acquisition (behaviorism, universal grammar, interactionism, connectionism and other cognitive models), bilingualism and its effects on cognitive development, L2 developmental stages and the characteristics of learner interlanguage, native-language influence, social, psychological and affective factors influencing L2 acquisition and language learning strategies. Particular emphasis will be placed on highlighting the implications of current research on French L2 teaching practices.