Sean Carroll's latest episode is a discussion on the self with Brian Lowery. Brian asserts that the self is a purely social construct.

Here's the summary of his book from the Amazon listing:

Social psychologist and Stanford professor Brian Lowery presents a provocative, powerful theory of identity, arguing that there is no essential "self"—our selves are social creations of those with whom we interact —exploring what that means for who we can be and who we allow others to be.