Evaluative research has not kept pace with developments in the theory of social planning and the philosophy of science. If evaluation is to contribute to social planning, evaluators must recognize that planning is a political process. The method of systemic perspectivism may be able to provide a means of combining the virtues of general systems theory with a perspectivistic view of objectivity, allowing for a transactive planning which involves the public.
Ball, Richard A.
"Systemic Perspectivism: A New Basis for Evaluative Research,"
The Journal of Sociology & Social Welfare: Vol. 5
, Article 7.
Available at: http://scholarworks.wmich.edu/jssw/vol5/iss3/7