“Lev Vygotsky lived during the Russian Revolution, a time of great change in his culture. If Vygotsky’s assertion that biological and cognitive developmental do not occur in isolation, then his environment of change greatly influenced his own cognitive processes.”
http://www.psy.pdx.edu/PsiCafe/KeyTheorists/Vygotsky.htm

I perceive Vygotsky as a more subjective inter personal individual cited as “relying on the concept of social representation while Piaget’s more objective and intra personal means of research led him to regard social representations as ideological reflection.”
MOSCOVICI, Serge
WHO IS THE MOST MARXIST OF THE TWO?
Swiss Journal of Psychology 2/3, 1996, © Verlag Hans Huber AG, Bern