Inferential Methods for the Tetrachoric Correlation Coefficient

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What to Do About Zero Frequency Cells When Estimating Polychoric Correlations (2011, background): “5 to all cells to preserve the marginals of the contingency table ( Agresti, 2002 ; Bonett & Price, 2005 , 2007 ; Long, Berry, & Mielke, 2009 ).”
Statistical power analyses using G*Power 3.1: Tests for correlation and regression analyses (2009, methodology): “Clicking on the “Options” button opens a window in which users may choose between the exact approach of Brown and Benedetti (1977) (default option) or an approximation suggested by Bonett and Price (2005). Input and output parameters.”
Dimensionality assessment of ordered polytomous items with parallel analysis. (2011, methodology): “, C 2), we estimated tetrachoric correlations using computationally simple method of Bonett and Price (2005), who showed that it yields acccurate approximations.”