How can I test discriminant validity for higher order confirmatory factor analysis?

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David L Morgan

What do you mean when you say the program "seems to need test discriminant validity"?

Jungwon Kim

I just mean that 'I think I need to test discriminant validity'

Actually, I found some articles using higher order cfa and some of them tested discriminant validity but some of them not.

So is it right to test discriminant validity for higher order cfa?