An Introduction to Rasch Measurement and Its Application to Test Equating in the Comprehensive Assessment Program.

Autor/in	Engelhard, George, Jr.
Titel	An Introduction to Rasch Measurement and Its Application to Test Equating in the Comprehensive Assessment Program.
Quelle	(1980), (27 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Monographie
Schlagwörter	Achievement Tests; Difficulty Level; Elementary Secondary Education; Equated Scores; Latent Trait Theory; Mathematical Models; Reading Tests; Student Evaluation; Test Items; Test Theory + Suchen Sie Ihr Suchwort? Achievement test; Achievement; Testing; Test; Tests; Leistungsbeurteilung; Leistungsüberprüfung; Leistung; Testdurchführung; Testen; Schwierigkeitsgrad; Latent-Trait-Modell; Mathematical model; Mathematisches Modell; Lesetest; Schulnote; Studentische Bewertung; Test content; Testaufgabe; Testtheorie
Abstract	The Rasch model is described as a latent trait model which meets the five criteria that characterize reasonable and objective measurements of an individual's ability independent of the test items used. The criteria are: (1) calibration of test items must be independent of particular norming groups; (2) measurement of individuals must be independent of particular items used for measuring; (3) test items must measure a single underlying trait or ability; (4) a more able individual must have a better chance of success with an item than a less able individual; and (5) an individual must have a better chance of success on an easy item than on a difficult item. To illustrate the use of the Rasch model for vertical equating, equal interval scales (EIS) were developed and applied to the Scott, Foresman Comprehensive Assessment Program (CAP), a coordinated series of tests and measures for evaluating students' educational growth. (Author/MH)
Erfasst von	ERIC (Education Resources Information Center), Washington, DC