A General Program for Item-Response Analysis That Employs the Stabilized Newton-Raphson Algorithm

Author(s):
Haberman, Shelby J.
Publication Year:
2013
Report Number:
RR-13-32
Source:
ETS Research Report
Document Type:
Report
Page Count:
98
Subject/Key Words:
FORTRAN (Computer program language) Exponential Families (Statistics) Item Response Theory (IRT) Loglinear Models

Abstract

A general program for item-response analysis is described that uses the stabilized Newton-Raphson algorithm. This program is written to be compliant with Fortran 2003 standards and is sufficiently general to handle independent variables, multidimensional ability parameters, and matrix sampling. The ability variables may be either polytomous or multivariate normal. Items may be dichotomous or polytomous.

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