Science can enlarge the Umwelt, but there always remains a noumenal reality beyond, independent of us. In 1971 Harre and Secord founded The Journal for the Theory of Social Behaviour, with which Harre is still associated. JTSB has published important papers in the philosophy of the human sciences, including debates about realism and about the relationship between agency and structure. Against positivism in experimental social psychology, Harre and Secord argued a hermeneutic approach. Actors' own accounts of their behaviour constitute the main data for social science.
Conversation emerges from physiology, but is structured by rules rather than causal relations.
Works Cited Bhaskar, Roy, ed. Essays in Honour of Rom Harre with His Commentary on Them. Exploring the Human Umwelt. Varieties of Realism. Harre, Rom, and Grant Gillett.