Beyond cognitivism

What is the appropriate relation between the fields of language and social interaction (LSI) research and cognitive psychology? I wish to speculate about one possible future where LSI hijacks much of the action that would have been considered the province of cognitive psychology, respecifying and reorienting it as it does so. In this future, LSI becomes a foundational discipline in the social sciences rather than existing merely to service one of a wide array of different topic areas. It is a future of ambition and creative argument. LSI might need a name change, though.