An upper asymptote for the three-parameter logistic item-response model
By: Marc A. Barton and Frederic M. Lord
Contributors: Lord, Frederic M., 1912-
Series: Research report / Educational Testing Service -- RR-81-20; Research report (Educational Testing Service) -- RR-81-20
Publisher: Educational Testing Service
Published: 1981
Place of publication: Princeton, N.J
Language: eng
Subjects: Item response theory; Parameter estimation
Notes: "This research was sponsored in part by the Personnel and Training Research Programs Psychological Sciences Division, Office of Naval Research, under Contract no. N00014-80-C-0402. Contract authority identification number NR no. 150-453."

Includes bibliographical references (p. 8).