R help - Aug 2006 - standardized partial regression coefficients

Hi all,
I am relatively new to R, so let me know if I missed something trivial.
I want to perform path-analysis with at least three levels of explaining 
variables (i.e., A affects B that affects C). I perform multiple 
regression for each set of variables, and get estimates for the partial 
coefficients and their SE. How can I translate it to standardized 
partial regression coefficients ("beta" in SPSS)?
Thanks
Yuval

-- 
Yuval Sapir, PhD
Post-doctorate research associate
Dept of Genetics
University of Georgia
Athens, GA 30602, USA

Yuval Sapir wrote:
> Hi all,
> I am relatively new to R, so let me know if I missed something trivial.
> I want to perform path-analysis with at least three levels of explaining 
> variables (i.e., A affects B that affects C). I perform multiple 
> regression for each set of variables, and get estimates for the partial 
> coefficients and their SE. How can I translate it to standardized 
> partial regression coefficients ("beta" in SPSS)?
> Thanks
> Yuval
  RSiteSearch("standardized coefficients") is helpful.  For example:

http://finzi.psych.upenn.edu/R/Rhelp02a/archive/68367.html
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/6038.html

  You also might consider the sem package by John Fox with its
standardized.coefficients function.

http://cran.r-project.org/doc/packages/sem.pdf

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