Daffodil International University
Faculties and Departments => Business Administration => Business & Entrepreneurship => BBA Discussion Forum => Topic started by: yahya on March 04, 2013, 01:37:22 PM
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The deductive-nomological model (DN model) is a formal view of scientific explanation. The DN model poses scientific explanation as a deductive argument with at least one natural law among its premises. DN model goes by several names, including covering laws model, Hempel's model, Hempel–Oppenheim model, Popper–Hempel model, and subsumption theory.
In the DN model, the statement of the phenomenon to be explained is the explanandum—which can be an event, law, or theory—whereas the premises stated to explain it are the explanans. The explanans must be true, contain at least one law, and entail the explanandum. Thus, given initial conditions C1, C2 . . . Cn plus general laws L1, L2 . . . Ln, event E is a deductive consequence, and has thereby been scientifically explained.
In the DN model, a law is a universal generalization that follows from a conditional proposition—If A, then B—and has empirical content testable.(A law differs from mere true regularity—for instance George always carries only $1 bills in his wallet—by a law's suggesting what must be true, and by being consequent of a scientific theory's axiomatic structure.) (From Wikipedia)