POS 3703 Lecture Notes - Lecture 2: Face Validity, Observational Error, Theoretical Definition

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4 Sep 2016
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Distinguish conceptual and concrete questions: conceptual questions- abstract and difficult to answer, concrete questions- expressed using tangible properties. Conceptual definitions- describes concepts measureable properties and specifies unit of analysis to which the concept applies. Operational definitions- describes instrument to be used in measuring the concept and putting the conceptual definition into operation. 1. identifies a measureable characteristic that varies in a population. 2. specifies subject or groups to which concept applies. The concept of economic liberalism is defined as the extent to which individuals exhibit the characteristic of supporting government spending for social programs. (essentials, p. 11) The concept of home field advantage (in american football) is defined as the extent to which home team exhibit the characteristic of winning. An operational definition describes explicitly how the concept is to be measured empirically. (essentials, p. 12) Measureable properties must be concrete and must vary. 2. valid- extent to which measurement records the true, intended value of a characteristic.

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