[R] Item Similarity in Scale Analysis?

["Jens Oehlschlägel"]

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 Oehlschlägel

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