What to Do About Zero Frequency Cells When Estimating Polychoric Correlations

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Examination of the Weighted Root Mean Square Residual: Evidence for Trustworthiness? (2018, methodology): “Prior research has shown that limited information estimation methods, such as WLSMV, exhibit estimation problems under settings that could lead to “empty” cells (e.g., DiStefano & Morgan, 2014; Savalei, 2011).”
Edinburgh Handedness Inventory – Short Form: A revised version based on confirmatory factor analysis (2014, methodology): “The latter estimates z score thresholds underlying ordinal variables, from which a polychoric correlation matrix is calculated and then subjected to confirmatory factor analysis (Savalei, 2011).”