Hostname: page-component-74656f9884-npj9w Total loading time: 0 Render date: 2026-11-09T04:47:31.473Z Has data issue: false hasContentIssue false

A Modified Beta Binomial Model with Applications to Multiple Choice and Taste Tests

Published online by Cambridge University Press:  01 January 2025

Donald G. Morrison*
Affiliation:
Columbia University
George Brockway
Affiliation:
Columbia University
*
Requests for reprints should be sent to Donald G. Morrison, Graduate School of Business, Columbia University, New York, NY 10027.

Abstract

A modified beta binomial model is presented for use in analyzing ramdom guessing multiple choice tests and certain forms of taste tests. Detection probabilities for each item are distributed beta across the population subjects. Properties for the observable distribution of correct responses are derived. Two concepts of true score estimates are presented. One, analogous to Duncan’s empirical Bayes posterior mean score, is appropriate for assessing the subject’s performance on that particular test. The second is more suitable for predicting outcomes on similar tests.

Information

Type
Original Paper
Copyright
Copyright © 1979 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