Bob, SPSS does not have the capacity to analyze one-parameter IRT models, of which Rasch models are a special case. If you wanted to take the approach that a 1-parameter IRT model is a special case of multi-level logistic regression model (items within persons), then you might be able to crib something together using the relatively new GEE procedure -- I've never tried it, but at one time I experimented with running 1PL models using generalized linear models in HLM, and it worked ok. But specialty tools like BILOG are much easier to use, and if you're an academic user you can do short-term software rentals through e-academy.com. Dan R.

Bob Schacht wrote: > Does SPSS have tools for Rasch measurement? If so, where might I find > them? > > Thanks, > Bob > > Robert M. Schacht, Ph.D. <schacht@hawaii.edu> > Pacific Basin Rehabilitation Research & Training Center > 1268 Young Street, Suite #204 > Research Center, University of Hawaii > Honolulu, HI 96814 > > ===================== > To manage your subscription to SPSSX-L, send a message to > LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the > command. To leave the list, send the command > SIGNOFF SPSSX-L > For a list of commands to manage subscriptions, send the command > INFO REFCARD >

-- Daniel Robertson Senior Research and Planning Associate Institutional Research and Planning Cornell University, Ithaca NY 14853-2801 607.255.9642 / irp.cornell.edu

===================== To manage your subscription to SPSSX-L, send a message to LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD