刚刚找到项目反应理论的一个简易的软件。对于初学者做1PL、2PL、3PL。再合适不过了。软件名称为PARAM。具体介绍见下面：
         PARAM is a public domain, freeware tool for calibrating items and individuals using the 1 & 3 parameter logistic item response theory models. Parameterization uses Newton-Raphson maximum likelihood estimation as outlined in Lord (1980). It runs on Windows XP, Windows 7 and probably other Windows® operating systems. Earlier versions were called PARAM-3PL and PARAM-1PL.






本人亲测过，效果不错。