Date: Fri, 17 Nov 2006 17:32:09 -0500
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Art Kendall <Art@DRKENDALL.ORG>
Organization: Social Research Consultants
Subject: Re: Stats quest re Factor Loadings
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This is where the art (no pun intended) of factor analysis comes in.
Try using |.5| with no second loading gt |.35| and relax the criteria if
you don't end up with at least 5 or 4 variables on each factor.
At this stage interpretability carries a lot of weight, so subject
If you keep items that are not as clean, you could use the "alpha if
item deleted" as a decision aid for final item selection.
Eliminating splitters sometimes carries more weight in deciding about an
item than the absolute size of the loading.
Social Research Consultants.
KEVIN MANNING wrote:
> A statistical question: I have run a prinicapl components analysis of tests of executive functioning resulting in four factors. I am trying to determine a cut-off for the loading to determine which measures to include in each factor. I have received varying advice, with either a .4 or .5 as the cut-off. Not sure which to use (if either).
> I realize the definition of factors is guided by theory, but this is an exploratory procedure, and I want to include the the loadings for each factor that explain the most variance. Thank you.
> Kevin Manning