st: Bug in estat teffects?

[Dave Garson <garson@ncsu.edu>]

I am running a model with the sem command. One direct path in the model 
has a value of .73 unstandardized or .34 standardized.

When total effects are partitioned into direct and indirect paths, " 
Direct effects are the path coefficients in the model.", as per "help 
sem teffects", which also states the "standardized (option) reports 
effects in standardized form".

Whether I run the sem standardized or unstandardized, if in 
postestimation I ask for "estat teffects,standardized" the direct effect 
in question is always the unstandardized value (.73) and the partition 
is based on unstandardized values.

To me this appears to be a bug in Stata, causing the "standardized" 
option to be ignored. However, is any reader able to shed light on this? 
I wish to do a standardized partition as I can in SPSS or SAS, and get 
the same results. Before I tell my students that this is impossible in 
Stata (except manually), I would like to check with the knowledge in 
this group.

Thanks,
Dave


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