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Exploratory and Confirmatory Factor Analysis

Exploratory and Confirmatory Factor AnalysisGeneral ConceptsExploratory Factor AnalysisConfirmatory Factor AnalysisNewsom, Spring 2017, Psy495 Psychological Measurement1 General ConceptsFactor Analysis provides information about reliability, item quality, and construct validityGeneral goal is to understand whether and to what extent items from a scale may reflect an underlying hypothetical construct or constructs, known as factorsAn analytic method with high sensitivity to identify problematic items and assess the number of factorsNewsom, Spring 2017, Psy495 Psychological Measurement2 General ConceptsIn general, Factor Analysis methods decompose (or break down) the covariation among items in a measure into meaningful componentsHigher inter-item correlations should reflect greater overlap in what the items measure, and, therefore, higher inter-item correlations reflect higher internal reliability Newsom, Spring 2017, Psy495 Psychological Measurement3 General ConceptsNewsom, Spring 2017, Psy495 Psychological Mea

Jul 29, 2016 · Exploratory Factor Analysis Two major types of factor analysis Exploratory factor analysis (EFA) Confirmatory factor analysis (CFA) Major difference is that EFA seeks to discover the number of factors and does not specify which items load on which factors. Newsom, Spring 2017, Psy 495 Psychological Measurement. 11

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