I'm a social psychologist, and my home base is in Conversation Analysis. That's the very close and painstaking study of interaction (of any sort: talking to the doctor, say, or arguing with your daughter, or 'just chatting'). Talk does things; Conversation Analysis uncovers what, and how.
My research interests are in social interaction and language. Among recent publications is the edited collection "Applied Conversation Analysis", and I am editor of the academic journal Research on Language and Social Interaction.