Toward the end of his life, the Russian psychologist L.S. Vygotsky turned away from his earlier work that he has become famous for only to sow the seeds for a new theory. In this theory, affect was to play a central role, there was to be a primacy of social relations, and anything mental (mind, thought, self, other, knowledge) was an event rather than a thing. This is essentially a transactional perspective. In this book, the author articulates a...