Re: Grid analysis

Rainer Riemann (upsyf077@HRZ.Uni-Bielefeld.DE)
Fri, 16 Feb 1996 14:35:20 MEZ

Dear Dr. Anderson,

in your recent posting you state:
> 3) the use of principal
> components, a common practice with gridders, is absurd (in my not so
> humble opinion) since the so-called sample size is necessarily too small
> for factor analysis.

Although stated frequently, the above statement is simply false. At
best it reflects a basic misunderstanding of the use of principal
components analysis for the analysis of grids.

Recently W. Chambers posted a 'mandala grid'. If you are not among the
happy few people, who can see the basic structure underlying this grid
without an technical tools, do a PCA and you may be surprised what PCA
can do for your understanding of relations among elements and constructs
and between elements and constructs.

Kind regards
Rainer Riemann

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PD Dr. Rainer Riemann Phone: <0>521 106 4529 Universitaet Bielefeld Fax: <0>521 106 5844 Fakultaet fuer Psychologie e-mail: upsyf077@hrz.uni-bielefeld.de und Sportwissenschaft Postfach 100131 D-33501 Bielefeld _______________________________________________________________________________

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