Deduction: process of reasoning in which a conclusion follows necessarily from the stated premises. An argument whose premise(s) are supposed to logically imply its conclusion. In ordinary language, another word for reasoning, as in, “When he saw the smoke, he deduced (made the deduction that) the engine overheated.” In the discipline of logic, deduction is used as a technical term… Read More

Deductive Logic: The branch of logic that studies the principles of entailment — the situation that occurs when one proposition follows necessarily from another, or others. This happens when it is impossible for the premises of the argument to be true and the conclusion false. This relationship is sometimes also called implication. Entailment (implication) instantiates the… Read More

Deductive nomological explanation: Type of covering law model which assumes the argument form required is a deductively valid one. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.