Vygotsky is a central figure in the development of a critical psychology, a critical learning theory that can be employed in a critical pedagogy. Born to a middle-class Jewish family in Orsha, Belorussia, Vygotsky contracted tuberculosis from his mother. His life was cut short by the disease; he died at the age of thirty-eight. Always upset with the decontextualized individualistic focus of mainstream psychology, Vygotsky called for a sociocultural psychological approach that accounted for the way individual cognition is socially and culturally mediated. By social and cultural mediation, Vygotsky meant that individual behavior cannot be removed from the context in which it takes place. Thus, psychology should always be studied in a cultural-historical context, he maintained.