Chett at ReformK12 just pointed me to a nifty online list of psychometric resources - The Statistics Resources for the Center for Research, Evaluation, and Program Development, Boston Graduate School of Psychoanalysis. I'd recommend the books on IRT, except that I haven't read them - I'm old school and rely on the classic Hambleton & Swaminathan IRT bible. I actually rely on a lot of "bibles" that aren't listed here, like Educational Measurement and Psychometric Theory. A tad ironic that I mainly read these old books, since I'm the book review editor for a measurement journal, but oh well.
I also would be remiss if I did not mention the IRT software packages BILOG and *cough*my-advisor-created-this*cough* MULTILOG. Even I can't claim they're easy to use - unless you're fluent in FORTRAN, and a frightening percentage of psychometricians are - but I see them get a lot of use in testing organizations.
Posted by kswygert at December 27, 2005 06:09 PM