[Rasch] Constructing variables

Bayram Yilmaz bayramyilmaz at gmail.com
Wed Jan 28 13:45:37 EST 2009


if you request PFILE you can save the measures in an excel or spss file and
do further analyses.

Bayram Yilmaz

On Tue, Jan 27, 2009 at 1:21 PM, Andres Sandoval <A.Sandoval at bath.ac.uk>wrote:

> Hi!
>
> I'm a new user of Rasch Models and therefore have a basic question.
>
> I'm doing an analysis about school attainment and contextual factors. As
> the data set I'm using has got over 500 items, I was advised to use Rasch
> Models to construct "indices" with the items measuring the same
> "dimensions".
>
> I grouped the items based on theoretical criteria. Then, using Winsteps, I
> ran Rasch Models obtaining rasch measures, infit coefficients, reliability
> coefficients...
>
> Now, my question is: once I know what items fit in each "index", how can I
> assign a value for each individual in order to use it as an independent
> variable in my analysis?
>
> Any advice or reference to literature explaining this will be much
> appreciated.
>
> Thanks in Advance
>
> -------------------------
> Andrés Sandoval-Hernández
> PhD Student
> Department of Education
> University of Bath
> Eastwood 20-21
> +44 (0) 1225 38 4658
> A.Sandoval at bath.ac.uk
> http://people.bath.ac.uk/ash22/
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>



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