Re: [R] Total (un)standardized effects in SEM?

2006-08-27 Thread Rense Nieuwenhuis
Dear John, thank you very much for your reply. The suggestions you make for calculating the direct and indirect effects are exactly what I was looking for. Although I'm very new to SEM and not at all very experienced in R, I tried to put them together in a function (called decomp) and

Re: [R] Total (un)standardized effects in SEM?

2006-08-27 Thread John Fox
Nieuwenhuis Sent: Sunday, August 27, 2006 2:13 PM To: r-help@stat.math.ethz.ch Cc: John Fox Subject: Re: [R] Total (un)standardized effects in SEM? Dear John, thank you very much for your reply. The suggestions you make for calculating the direct and indirect effects are exactly what I

Re: [R] Total (un)standardized effects in SEM?

2006-08-25 Thread John Fox
Dear Rense, (This question was posted a few days ago when I wasn't reading my email.) So-called effect decompositions are simple functions of the structural coefficients of the model, which in a model fit by sem() are contained in the $A component of the returned object. (See ?sem.) One

[R] Total (un)standardized effects in SEM?

2006-08-21 Thread Rense Nieuwenhuis
Hi there, as a student sociology, I'm starting to learn about SEM. The course I follow is based on LISREL, but I want to use the SEM-package on R parallel to it. Using LISREL, I found it to be very usable to be able to see the total direct and total indirect effects (standardized and