An Application of Generalizability Theory to Evaluate the Technical Quality of an Alternate Assessment

Autor/inn/en	Taylor, Melinda Ann; Pastor, Dena A.
Titel	An Application of Generalizability Theory to Evaluate the Technical Quality of an Alternate Assessment
Quelle	In: Applied Measurement in Education, 26 (2013) 4, S.279-297 (19 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0895-7347
DOI	10.1080/08957347.2013.824450
Schlagwörter	Generalizability Theory; Alternative Assessment; Test Reliability; Scores; Error of Measurement; Disabilities; Grade 5; Grade 8; Grade 10; Reading Tests; Mathematics Tests; Statistical Analysis; Test Construction + Suchen Sie Ihr Suchwort? Testreliabilität; Messfehler; Handicap; Behinderung; School year 05; 5. Schuljahr; Schuljahr 05; School year 08; 8. Schuljahr; Schuljahr 08; Lesetest; Statistische Analyse; Testaufbau
Abstract	Although federal regulations require testing students with severe cognitive disabilities, there is little guidance regarding how technical quality should be established. It is known that challenges exist with documentation of the reliability of scores for alternate assessments. Typical measures of reliability do little in modeling multiple sources of error, which are characteristic of alternate assessments. Instead, Generalizability theory (G-theory) allows researchers to identify sources of error and analyze the relative contribution of each source. This study demonstrates an application of G-theory to examine reliability for an alternate assessment. A G-study with the facets rater type, assessment attempts, and tasks was examined to determine the relative contribution of each to observed score variance. Results were used to determine the reliability of scores. The assessment design was modified to examine how changes might impact reliability. As a final step, designs that were deemed satisfactory were evaluated regarding the feasibility of adapting them into a statewide standardized assessment and accountability program. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10