Discusses psycholinguistic and sociolinguistic questions relevant to the development of language programs for foreigners, such as student motivation, language aptitude, learning styles, cultural differences, language styles, and communicative competence. Focuses particularly on the cultural problems faced by a foreigner, as a student, client, and visitor. Societe Nouvelle Didier Erudition, 40, rue du Fer-a-Moulin, 75005 Paris. (MES)