Estimation of the Operating Characteristics When the Test Information of the Old Test Is Not Constant. I: Rationale. Research Report 80-2.

Autor/in	Samejima, Fumiko
Institution	Tennessee Univ., Knoxville. Dept. of Psychology.
Titel	Estimation of the Operating Characteristics When the Test Information of the Old Test Is Not Constant. I: Rationale. Research Report 80-2.
Quelle	(1980), (106 Seiten)Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; Monographie
Schlagwörter	Difficulty Level; Item Analysis; Latent Trait Theory; Least Squares Statistics; Mathematical Models; Maximum Likelihood Statistics; Measurement Techniques; Test Items + Suchen Sie Ihr Suchwort? Schwierigkeitsgrad; Itemanalyse; Latent-Trait-Modell; Mathematical model; Mathematisches Modell; Messtechnik; Test content; Testaufgabe
Abstract	Many combinations of a method and an approach for estimating the operating characteristics of the graded item responses, without assuming any mathematical forms, have been produced. In these methods, a set of items whose characteristics are known, or Old Test, is used, which has a large, constant amount of test information throughout the interval of the latent trait of interest. The rationale is presented to generalize these methods so that they are made applicable when the test information of the Old Test is not constant. Both the transformation-free character of the maximum likelihood estimator and the method of moments for fitting a polynomial as the least squares solution play important roles in this rationale. Comparison of results using different types of test information functions are presented. The procedures presented in this paper will be applied in a simulation study, and published as separate papers, in order to investigate how the theory works in practice. (Author/RL)
Erfasst von	ERIC (Education Resources Information Center), Washington, DC