Hostname: page-component-74656f9884-2dmjx Total loading time: 0 Render date: 2026-11-07T22:28:44.978Z Has data issue: false hasContentIssue false

Maximum Marginal Likelihood Estimation for Semiparametric Item Analysis

Published online by Cambridge University Press:  01 January 2025

J. O. Ramsay*
Affiliation:
McGill University
S. Winsberg
Affiliation:
IRCAM
*
Requests for reprints should be sent to J. O. Ramsay, Department of Psychology, 1205 Dr. Penfield Ave., Montreal, Quebec, CANADA H3A 1B1.

Abstract

The item characteristic curve (ICC), defining the relation between ability and the probability of choosing a particular option for a test item, can be estimated by using polynomial regression splines. These provide a more flexible family of functions than is given by the three-parameter logistic family. The estimation of spline ICCs is described by maximizing the marginal likelihood formed by integrating ability over a beta prior distribution. Some simulation results compare this approach with the joint estimation of ability and item parameters.

Information

Type
Original Paper
Copyright
Copyright © 1991 The Psychometric Society

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable