Reliability and Validity of the TONI-3 Intelligence Test in Gifted Children

In this study, it was aimed to test the TONI-3 intelligence test on the gifted children. The sample of the research was composed of totally 111 gifted students with superior intelligence, 45 of whom are female (40.5%) and 66 of whom are male (59.5%), who study at İzmir Sıdıka Akdemir Science and Art Center. In the reliability analyses, Kuder Richardson-20 (KR-20) reliability, two half-test and parallel form reliability were calculated. Besides, within the scope of item analysis, item difficulty levels were analyzed. In the validity analysis of the TONI-3 test, criterion-dependent validity was used. For this purpose, the relationship level between TONI-3 test and RSPM and BST tests was determined by Pearson Product-moment formula. According to the results of the research, it was revealed that when the items of the test was used as internal criterion, the internal consistency reliability coefficient of the test was extremely high (KR-20=.91) and the results showed that it could be reliably used on the gifted children in the sample group of the research. As a result of the analysis performed within the scope of uniformity validity, TONI-3 Form A scores showed moderate correlations with RSPM (.48) and BST test (.32).