1. Conditioning and Behavior;Hamlyn;op. cit.
2. The Explanation of Purposive Behavior;Taylor;op. cit.
3. Gellner Ernest
4. Jarvie I. C. and Winch Peter , ‘Understanding and Explanation in Sociology and Social Anthropology’, pp. 231–70
5. Harsanyi J. C. , pp. 371–3, in the same volume, also contain a good discussion of Homan's theory. But the weakness of Robson's paper is that it restricts itself to the general sociological theory and overlooks the much more real theorizing which takes place in the sub-fields of comparative sociology.