In fact, there some common IRT models that ltm cannot currently handle, e.g., the three-parameter logistic model or the graded response model; however, I do plan to incorporate these models in the near future.
Best, Dimitris ----- Original Message ----- From: "Doran, Harold" <[EMAIL PROTECTED]> To: "Caio Lucidius Naberezny Azevedo" <[EMAIL PROTECTED]>; <[email protected]> Sent: Sunday, November 27, 2005 2:52 PM Subject: Re: [R] IRT Package >I do not believe another IRT package exists. However, I have recently >used the rasch() function in ltm for a study I am doing and have >found it very useful. I'm curious (as I'm sure the ltm developer is) >as to what are you doing that ltm cannot handle. > > Harold > > > -----Original Message----- > From: [EMAIL PROTECTED] on behalf of Caio Lucidius > Naberezny Azevedo > Sent: Sat 11/26/2005 4:50 PM > To: [email protected] > Cc: > Subject: [R] IRT Package > > Hi all, > > Could anyone tell me if there is some package that fits any Item > Response Model (further the ltm package)? > > Regards, > > Caio > > > --------------------------------- > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
