Les capacités humaines sont des constructions sociales. Essai sur la théorie de Vygotsky

In Vygotsky's theory, the differentiation between genetic psychology and psychology of education has no sense. This thesis is proven by the exposition of some basic psychological principles governing Vygotsky's approach to psychology. Mediation of the psychological processes is the central fact of Vygotsky's conception; socially elaborated systems of signs are the means of mediation; these allow a control of the processes of behavior. Internalization and sociogenesis, which derive directly from this conception, are two inseparable aspects of the same process of construction of the different psychological capacities; on a certain level of development, they lead to a quasi-social behavior of the subjet towards himself. The differenciation of functions is the main form of construction of new capacities: the analyses of the development of language is a good illustration of this principle. Through the analysis of Vygotsky's theory one can discover some important guide lines for research in psychology.