Carlos Rodriguez wrote:
> Hello list members,
>
> I have a couple of questins regarding ivregress 2sls:
>
> 1) is it wrong to include some regressors which might be endogenous as
> controls, in addition to the instrumented main endogenous explanatory
> variable?
>
>   
YES.

> 2)  can one use a LDV in an ivregress 2sls model? 
NO. If LDV means limited dependent variable.

> does it cause bias?
>   
Estimates with 2sls are not unbiased anyway, so this is not the correct 
question to ask.



> thanks! happy holidays
>
>   


-- 
Paul E. Johnson                       email: [log in to unmask]
Professor, Political Science          http://pj.freefaculty.org
1541 Lilac Lane, Rm 504                              
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66044-3177           FAX: (785) 864-5700

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