Thanks to Richard Williams and Jean-Benoit Hardouin for
their explanations.
Nick
[email protected]
Richard Williams
> >I'm in ignorance here.
> >
> >Are tetrachoric and polychoric just different
> >names for the same kind of correlations?
>
> tetrachoric is a special case of polychoric. From "Lisrel 8:
> Structural
> equation modeling with the Simplis Command Language" by Karl
> Koreskog and
> Dag Sorbom, pp. 44-45:
...
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