Input-output questions

Your article "In research, small is just as beautiful" (26 November 2009) made some interesting points. However, it focused on outputs. One area that could be worthy of further investigation is to see whether there is any difference in the resource inputs between the Russell Group and the 1994 Group, which may provide additional insights into productivity and the underlying argument.

Bruce Lloyd, Emeritus professor of strategic management, London South Bank University.