Achievement testing with the Wechsler Quicktest: An examination of its psychometric properties and applied utility with a Greek-Cypriot sample
Kokkinos, Constantinos M.
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The study aimed to field-test a Greek version of the Wechsler Quicktest and to examine its psychometric properties. The Quicktest was individually administered to 208 students, aged 5-14 years, along with a reading test. Based on the Rasch analysis, data for the Quicktest subtests showed acceptable fit to the model. Also, correlations were found between the Quicktest subtests. Moreover, the Quicktest was significantly correlated to school grades, teachers' predictions, scores on the Learning Disability Evaluation Scale (LDES) and Trigka's Reading Test. A Spearman analysis indicated significant correlations between scores on the Quicktest subtests and the grade level of students. Also, a regression analysis indicated that scores on the Quicktest can predict the scores on the other measures. Results supported the Quicktest's criterion-related validity and construct validity and, also, its utility as part of a systematic diagnostic procedure for learning disabilities. © 2011 Taylor & Francis.