[R] Item Similarity in Scale Analysis?

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From: Jens Oehlschlägel (joehl@gmx.de)
Date: Wed 05 May 2004 - 21:23:43 EST


Message-id: <16511.1083756223@www24.gmx.net>


Does anyone know about R code for the methods presented in "Item Similarity
in Scale Analysis" in Political Analysis, 2000, 8:3, 261-283 by Marco R.
Steenbergen? (seems to be a variant of Item Similarity Index from Hunter
1973 ("Methods for Reordering the Correltation Matrix to Facilitate Visual
Inspection and Preliminary Cluster Analysis", Journal of Educational
Measurement 10:51-61) which replaces guessing single item reliabilities by
assumption of equal item reliabilites. Does anyone has experience with this
method? SEM experts?

Thanks for any help.

Jens Oehlschlägel

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