Quality & Quantity · 1990 · 417 citations · 11 references
EducationEducational AssessmentEducational MeasurementCategorical Data AnalysisPsychometricsStatisticsFactor Loading InvarianceMultivariate AnalysisOrdinal NumbersPolytomous Item ModelsStatistical AnalysisStructural Equation ModelingOrdinal Measurement InvarianceOrdinal Measurement ModelsOrdinal Regression ModelsWeighted Least Squares
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Maximum Likelihood Estimation of the Polychoric Correlation Coefficient
Ulf Olsson · Psychometrika · 1979 · 1.1K citations