[R] Structural Equation Model

[John Fox]

Dear Marcos,

I don't see why you can't specify a MIMIC model using sem(), though you
might have to supply your own start values. When I have a chance, but
possibly not today, I'll check.

Regards,
 John


--------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
--------------------------------
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Marcos Sanches
Sent: Thursday, February 26, 2004 6:33 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Structural Equation Model


	Hello all!

 I want to estimate parameters in a MIMIC model. I have one latent variable
(ksi), four reflexive indicators (y1, y2, y3 and y4) and four formative
indicators (x1, x2, x3, x4). Is there a way to do it in R? I know there is
the SEM library, but it seems not to be possible to specify formative
indicators, that is, observed exogenous variables which causes the latent
variable. 

 Thanks,

Marcos

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