Rasch Investigation of the CogAT Form 8 Verbal, Quantitative, and Nonverbal Domains in Grades 3 through 5

Autor/inn/en	Debi K. Torres; Liesel A. Lutz; Jianwen Song; Fatih Ozkan; Tim Spitsberg; Tricia Filippini; Hiroki Matsuo; Grant B. Morgan
Titel	Rasch Investigation of the CogAT Form 8 Verbal, Quantitative, and Nonverbal Domains in Grades 3 through 5
Quelle	In: Journal of Psychoeducational Assessment, 44 (2026) 1, S. 20-35Infoseite zur Zeitschrift PDF als Volltext Link als defekt meldenVerfügbarkeit
Zusatzinformation	ORCID (Liesel A. Lutz) ORCID (Fatih Ozkan) ORCID (Tim Spitsberg) ORCID (Grant B. Morgan)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0734-2829
DOI	10.1177/07342829251381509
Schlagwörter	Forschungsbericht; Elementary School Students; Item Response Theory; Psychometrics; Cognitive Tests; Academically Gifted; Gifted Education; Test Items; Test Validity; Cognitive Ability; Test Reliability; Scores; Goodness of Fit; Verbal Ability; Nonverbal Ability; Texas; Cognitive Abilities Test + Suchen Sie Ihr Suchwort? Item-Response-Theorie; Psychometry; Psychometrie; Kognitiver Fähigkeitstest; Test content; Testaufgabe; Testvalidität; Denkfähigkeit; Testreliabilität; Mündliche Leistung
Abstract	This study investigates the CogAT Form 8, which is widely used to help determine student eligibility for gifted education programs in K-12 schools, using dichotomous Rasch modeling to determine the psychometric properties of the test items. Scores were collected from 1,689 students in grades 3-5 from a large urban public school district in Texas in the 2022-2023 school year. Results indicate strong but preliminary evidence supporting the validity and use for assessing cognitive abilities in this diverse student population. On average, item difficulties were slightly lower than the person measure distributions, which aligns with usage in gifted education programs. Item fit statistics were acceptable for most items, and the person and item reliability indices suggest the CogAT supports consistent inferences about student ability across domains and grade levels. Overall, the results of our Rasch analyses support the continued, but cautiouse of the CogAT with similar student populations. (As Provided).
Anmerkungen	SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: https://sagepub.com
Begutachtung	Peer reviewed
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2026/1/03