This paper provides a pragmatic example of a theory. It is the one provided by James on tough and tender thinking. The need for such a theory for complex social problems is discussed, two applications outlined and the theory summarized.
Mitroff, Ian I.
"William James and a Theory of Thinking,"
Journal of Information Technology Theory and Application (JITTA):
2, Article 9.
Available at: http://aisel.aisnet.org/jitta/vol6/iss2/9