To Lasswell , any discipline or professional with relevance to government could be described as a policy science. Deleon (1988) refers to “policy science” as “an umbrella term describing a broad-gauge intellectual approach applied to the examination of societally critical problem.....the policy science, as we shall see, are problem-oriented and contextual in nature, multidisciplinary in approach, and explicitly normative in perspective, they represent a Variety of approaches to understanding and resolving issues of great public importance.