You are right, I mean two-parameter item response model. I have tried
gllamm, but it is very slow and not suitable for large datasets. I am
wondering if there is another ado file in Stata.
Thanks
-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of SR Millis
Sent: Wednesday, October 03, 2007 3:44 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: Rasch
There is no such thing as a 2-parameter Rasch model.
By definition, Rasch is a 1-parameter model.
SR Millis
--- Davood Souri wrote:
> Dear Statalisters,
>
>
>
> Can anybody help me to estimate a two-parameter
> Rasch model by Stata.
>
>
>
> Thanks
>