[Rasch] Rasch vc CFA

Brady Michael Jack bradyjack at gmail.com
Sat Sep 29 01:40:46 EST 2012


Hi Tom,

I too am interested in reading a paper with your results.

Thank you.
Brady

On Fri, Sep 28, 2012 at 11:16 PM, Agustin Tristan <ici_kalt at yahoo.com>wrote:

>  Hi Tom! do you have a paper or document available with your results? It
> could be of some help for me too.
> Regards
> Agustin
>
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>   *From:* Tom Conner <connert at msu.edu>
> *To:* rasch at acer.edu.au
> *Sent:* Friday, September 28, 2012 9:00 AM
>
> *Subject:* Re: [Rasch] Rasch vc CFA
>
> Lasonas,
>
> I have data from a survey of relatives of persons in long term care and
> a prediction model for extent of known abuse of the persons in care.  I
> did a regular SEM with the data using CFA and the model would not
> converge.  Using Rash as the measurement model the structural model fit
> very very well.  I give you this example to illustrate the point that
> you can get very different SEM results depending on which measurement
> model you use.  Thus it is more than satisfying an editor.  There are
> epistimological issues.
>
> Tom
>
> On 9/27/12 12:42 PM, Iasonas Lamprianou wrote:
> > Dear all,
> > I have spent many years using various Rasch models in order to
> investigate the unidimensionality of my scales, tests etc, and this list
> supported me reliably (thank you!). The Rasch model served me faithfully
> and produced a very descent number of publications over many years. I
> understand the strengths very well (and some limitations). However, the
> more I get to know CFA (confirmatory factor analysis), the more I am
> puzzled as to why and when one should prefer CFA over Rasch (and
> vice-versa). Please forgive my ignorance. I rest assured that somebody out
> there will bother to introduce me to some *definitive* (should I say,
> authoritarian) publications which compare the two and offer a comprehensive
> answer. Lets say that a reviewer asks me why I prefered one method over
> another to investigate the unidimensionality of my scale, what should I
> > say, what is the "correct" answer? (lets say that this may have happened
> already!)
> >
> > Thank you for your time
> >
> > Jason
> > Iasonas Lamprianou
> > Social and Political Science, University of Cyprus
> > _______________________________________________
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>
> --
> Tom Conner
> Professor Emeritus
> Department of Sociology
> Michigan State University
> "What if there were no hypothetical questions?"
>
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-- 
Brady Michael Jack
Postdoctoral Research Fellow
Center for General Education
National Sun Yat-sen University
70 Lien Hai Road,
Kaohsiung 804 Taiwan
Phone: +886-7-525-2000
Website: http://www.researchgate.net/profile/Brady_Jack/
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