Investigating Invariant Item Ordering in Intelligence Tests: Mokken Scale Analysis of KBIT-2

Authors : Eren Halil ÖZBERK, Elif Bengi ÜNSAL ÖZBERK, Sait ULUÇ, Ferhunde ÖKTEM

Pages : 714-728

Doi:10.21449/ijate.858183

View : 26 | Download : 9

Publication Date : 2021-09-05

Article Type : Research Paper

Abstract :The Kaufman Brief Intelligence Test – Second Edition insert ignore into journalissuearticles values(KBIT-2); is designed to measure verbal and nonverbal abilities in a wide range of individuals from 4 years 0 months to 90 years 11 months of age. This study examines both the advantages of using Mokken Scale Analysis insert ignore into journalissuearticles values(MSA); in intelligence tests and the hierarchical order of the items in the KBIT-2: Turkish form by estimating the parameters of each of the three subtests by testing the dimensionality of the KBIT-2 subtests by using the Invariant Item Ordering insert ignore into journalissuearticles values(IIO); assumptions. 2850 people participated in the study, including children, adolescents, and adults. Participants` ages varied from 48 months insert ignore into journalissuearticles values(4 years 0 months); to 539 months insert ignore into journalissuearticles values(44 years 11 months);. Automated Item Selection Procedure insert ignore into journalissuearticles values(AISP); was applied for the assessment of unidimensionality under three different lower bounds as 0.30, 0.40, and 0.55. The items of all three subtests formed a unidimensional scale. Backward Item Selection insert ignore into journalissuearticles values(BIS); procedure detected seven items in the Matrices and 17 items in the Verbal Knowledge, while six items in the Riddles subtest violated the IIO criteria. KBIT-2: Reliability values obtained using MSA analysis show that all three subtests have a high degree of internal consistency. However, care should be taken when IIO assumptions do not fit the intelligence scales in the original form.
Keywords : Mokken scale analysis, Intelligence tests, Invariant item ordering