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From |
Richard Williams <Richard.A.Williams.5@ND.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
RE: st: Differences between stata 9 and 8.2 - factor analysis |

Date |
Mon, 20 Jun 2005 13:09:59 -0500 |

At 10:39 AM 6/20/2005 -0700, you wrote:

If everything is the same except the factor loadings have all switched signs, doesn't that mean that the old and new factors are perfectly negatively correlated? If so, does it matter which one you "trust?"Richard, Thanks for the hint. Yes, you are right, as expected the results are the same as in the real 8.2 when I use -version-. My only problem now is that I have to figure out what exactly the difference between the two version is and which one I should trust (and how to justify that). The whatsnew just tells me that rotate has been expanded with new methods of rotations, but I don't see how that should affect my usage of VARIMAX. I guess something has been changed on how that rotation works, perhaps a starting value? Any clues?

Even if it doesn't, the change seems odd, and I agree that the reasons are not clear from the online help alone. Perhaps the new Multivariate Statistics Manual contains the details, but nothing stood out when I did a quick skim.

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Richard Williams, Notre Dame Dept of Sociology

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**References**:**Re: st: Differences between stata 9 and 8.2 - factor analysis***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

**RE: st: Differences between stata 9 and 8.2 - factor analysis***From:*"Daniel Schneider" <daniel.schneider@stanford.edu>

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