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Date:   Thu, 10 Feb 2011 15:57:12 -0800
Reply-To:   krisscot <>
Sender:   "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:   krisscot <>
Subject:   Principal Axis Factor and SPSS
Content-Type:   multipart/alternative;

I hope that someone can help clarify some interesting output I came across from a Factor Analysis that I just conducted. I have a 24-item instrument that I used Principal Axis Factoring for. By default, SPSS suggested that there were 5 factors based on the eigenvalue greater than 1 rule. I then tried to run the same procedure but altered the number of factors to be extracted to 3. The eigenvalues for the 3-factor solution were not the same values as the first 3 eigenvalues from the 5-factor solution (all values are based on prerotation). The values are close but shouldn't they be identical given that factors are extracted ortogonally? Thanks!



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