Accession Number : ADA183811

Title :   Bias Function of the Maximum Likelihood Estimate of Ability for Discrete Item Responses.

Descriptive Note : Technical rept.,

Corporate Author : TENNESSEE UNIV KNOXVILLE DEPT OF PSYCHOLOGY

Personal Author(s) : Samejima,Fumiko

PDF Url : ADA183811

Report Date : 16 Jun 1987

Pagination or Media Count : 68

Abstract : The paper is concerned with the bias of the maximum likelihood estimate as a function of the latent trait, or ability, for the general case in which item responses are discrete. The rationale is presented, and observations are made with respect to the effects of the test information function, the item parameters, the number of items, the transformation of the latent variable, etc., on the amount of bias. Keywords: Mathematical models, Scale transformation. (Author)

Descriptors :   *BIAS, *MAXIMUM LIKELIHOOD ESTIMATION, RESPONSE, MATHEMATICAL MODELS, TRANSFORMATIONS(MATHEMATICS), CHARTS

Subject Categories : Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE