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PSYC 2520 (20)
Chapter 6

Ch. 6 - Reliability and Validity in Measurement and Research.docx

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PSYC 2520
Josee Rivest

PSYC 2520: Introduction to Experimental Psychology Beginning Behavioral Research: A Conceptual Primer (7th ed.) Rosnow & Rosenthal Chapter 6: Reliability and Validity in Measurement and Research ● Validity-- How well the measure or design does what it's supposed to do ○ Construct validity-- The degree to which the conceptualization of what is being measured or experimentally manipulated is what is claimed, such as the constructs that are measured by psychological tests or that serve as a link between independent and dependent variables ○ Content validity-- The adequate sampling of the relevant material or content that a test purports to measure ○ Convergent or discriminant validity-- The grounds established for a construct based on the convergence of related tests or behavior (convergent validity) and the distinctiveness of unrelated tests or behavior (discriminant validity) ○ Criterion validity-- The degree to which a test or questionnaire is correlated with outcome criteria in the present (its concurrent validity) or the future (its predictive validity) ○ External validity-- The degree of generalizability of a relationship over different people, settings, manipulations (or treatments), and research outcomes ○ Face validity-- The degree to which a test or other instrument "looks as if" it is measuring something relevant ○ Internal validity-- The soundness of statements about whether one variable is the cause of a particular outcome, especially the ability to rule out plausible rival hypotheses ■ Threats to internal validity: ● Between & Within Subject Variables ○ Researcher expectancy
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