What evidences support or contredict Vygotsky's philosophy of mind? I'm interested specifically in the experimental evidences supporting or contradicting: 1-that self-awareness in human is the result of language 2-that any "higher mental abilities" is the result of language and cultural evolution. 3-that chimps can extrospect, but they are not introspective - able to have thoughts about their thoughts. As an example of the kind of response I'm looking for I'm not very familar to Vygotsky's work, so if there exists even more interesting claims AND experimental evidences to support it, thanks for sharing your knowledge. Please number the claim to facilitate the discussion.