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??gel -- "Sie haben neue Mails!" - Die GMX Toolbar informiert Sie beim Surfen! Jetzt aktivieren unter http://www.gmx.net/info