Re: [R] Ability Estimates for Repeated Measurements in the eRm Package

ght try looking at > the irt.ability() function in the MiscPscyho package for ability > estimates. > >> -Original Message- >> From: r-help-boun...@r-project.org >> [mailto:r-help-boun...@r-project.org] On Behalf Of Tessari >> Sent: Wednesday, September 02, 2009 1

[R] Ability Estimates for Repeated Measurements in the eRm Package

Dear R Users, I am using the LLTM and the LRSM functions in the eRm package to do repeated measurements where there are 2 measurement points for a list of 10 items. I am trying to get ability estimates but am having trouble. I don't think that it is appropriate to use the pmat function since t