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Hi,

> I ran factor analysis using R and SAS. However, I had different outputs from
> R and SAS.
> Why they provide different outputs? Especially, the factor loadings are
> different.
> I did real dataset(n=264), however, I had an extremely different from R and
> SAS.
> Why this things happened? Which software is correct on?

factanal uses ML-method for estimating the loadings. SAS and SPSS use
the principal component method. Maybe you should better use princomp +
varimax. However, the rotated solutions are basically the same :)

Yours sincerely

Sigbert
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