Reliability and interpretation of total scores from multidimensional cognitive measures - evaluating the GIK 4-6 using bifactor analysis.

Autor/inn/en	Debatin, Tobias; Aljughaiman, Abdullah; Alghawi, Miriam; Stöger, Heidrun
Titel	Reliability and interpretation of total scores from multidimensional cognitive measures - evaluating the GIK 4-6 using bifactor analysis.
Quelle	In: Psychological test and assessment modeling, 60 (2018) 4, S. 393-401 PDF als Volltext kostenfreie Datei Link als defekt meldenVerfügbarkeit
Beigaben	Literaturangaben
Sprache	englisch
Dokumenttyp	online; gedruckt; Zeitschriftenaufsatz
ISSN	2190-0493; 2190-0507
Schlagwörter	Testverfahren; Analyse; Interpretation
Abstract	It is often not trivial to interpret total scores from test batteries of cognitive ability, as the underlying set of items or subscales is typically not unidimensional. Additionally, in such cases, the reliability is not accurately estimated by coefficient alpha. The rarely addressed problem and possible solutions via bifactor analysis are presented without mathematical details. Applying this technique, factor structure and model-based reliability of the cognitive ability part of the Gifted Identification Kit 4-6 (GIK 4-6), a newly developed test battery to identify gifted students in the United Arab Emirates, were evaluated using confirmatory bifactor analyses. Results revealed that the total score is reliable (coefficient omega = .89) and primarily measures a general intelligence factor (g). The total score should best be interpreted as a blend of g, a reading factor, and a mathematics and science factor. (Orig.).
Erfasst von	Externer Selbsteintrag
Update	2020/1