“…Social workers can realize this opportunity only by definitively turning away from the unsound and detrimental set of beliefs derived from logical positivism (or logical empiricism, see below) and embracing the beliefs currently espoused in the philosophy of science and the "hard" sciences, and imported into social work by Martha Heineman Pieper (1981Tyson, 1995) as the heuristic paradigm. Already, many social workers have chosen the heuristic paradigm for developing and evaluating social work research and knowledge: The heuristic paradigm is now taught in many masters and doctoral social work programs; research based on the heuristic paradigm has been published in several social work publications (D'Haene, 1995;Murdach, 1995;Heineman Pieper & Pieper, 1992;Tyson, 1999Tyson, , 2000Tyson & Carroll, 2001); there is increasing acceptance of methodological pluralism or "many ways of knowing" (Davidson, 1988;Dean & Fenby, 1989;Goldstein, 2000;Hartman, 1990;Laird, 1993;Saleebey, 1994;Weick, 1991;Witkin, 1995); and, in general, uncritical acceptance of the flawed logical empiricist paradigm has been replaced with a lively debate over which foundations we will choose for our field.…”