In this episode of The Science of Dialogue, host Rod J. Naquin explores how seminal research reveals the social origins of thinking and communicating. We examine Lev Vygotsky's theory that reasoning skills develop first socially, then individually. We discuss Jerome Bruner's work showing how caregiver-child interaction fosters communication. We also explore Mikhail Bakhtin's view of thinking as socially-influenced inner dialogue. Together, these perspectives illuminate how key cognitive and linguistic processes emerge through interpersonal dialogue.