[Rasch] Rasch Linking Software

Fischer, Felix Felix.Fischer at charite.de
Tue Dec 14 21:13:52 EST 2010

Hello David,

maybe the PLINK-package for R (http://cran.r-project.org/) is useful for you. 


Dipl. Psych. Felix Fischer

Medizinische Klinik mit Schwerpunkt Psychosomatik
Charité -- Universitätsmedizin Berlin
Luisenstr. 13a
10117 Berlin

Tel.: 030 - 450 553575
Email: felix.fischer at charite.de
Von: rasch-bounces at acer.edu.au [rasch-bounces at acer.edu.au] im Auftrag von rasch-request at acer.edu.au [rasch-request at acer.edu.au]
Gesendet: Dienstag, 14. Dezember 2010 02:00
An: rasch at acer.edu.au
Betreff: Rasch Digest, Vol 65, Issue 6

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Today's Topics:

   1. Rasch Linking Software (demott at aol.com)


Message: 1
Date: Mon, 13 Dec 2010 17:48:34 -0500
From: demott at aol.com
Subject: [Rasch] Rasch Linking Software
To: Rasch at acer.edu.au
Message-ID: <8CD692F01AA4078-1C88-269F at web-mmc-m08.sysops.aol.com>
Content-Type: text/plain; charset="us-ascii"

 Listers --

Years ago I used a program that would automatically link networks of Rasch calibrated forms that had common items with local calibrations. First it would attempt to link all forms that had overlapping items and then it would look at 2nd degree links, and so on. We used this for as many as 40 overlapping forms which shared varying numbers of overlapping items in various positions. I think Ben Write called this process triangulation.

You could designate any form as the base form. It would tell you the quality of each of the links and list outlier items. You could designate which items to remove from the links and rerun. It seems to me that we got the program from Fred Foster, but I may be mistaken. I recall that It was written in FORTRAN IV and ran on a mainframe.

Does any anyone have any information about it. (We called it LINK, in a burst of originality.) or know of another application that might serve the same purpose.

David Mott
Richmond, VA
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