In an earlier paper, Herman and Heimovics (1994), have raised the issue of the importance of defining the criteria used to evaluate the effectiveness of voluntary and non-profit organisations (VNPOs), in contrast to the apparent availability of such criteria in respect of for-profit organisations. They are right to raise this issue. VNPOs are both playing a greater part in the delivery of public services throughout the world, and are subject to greater scrutiny of their operations precisely because of this. This requires attention to be directed to their effectiveness by researchers, policy makers and practitioners alike. The lack of a commonly agreed framework for this was highlighted a decade ago by Knokke and Prensky (1984). It remains still to be resolved.
However, we will argue in this paper that the approach taken by Herman and Heimovics in their paper is itself a flawed one. We will commence by summarising our understanding of their argument and then highlight what we consider to be its flaws. Finally, we offer an alternative model which we believe has the potential to take the debate further.