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4.5.3 Using the Comprehensive Test of Nonverbal Intelligence-Second Edition (CTONI-2) in identifying gifted students in Oman
The purpose of this study was to use the Comprehensive Test of Nonverbal Intelligence (CTONI-2) in identifying giftedness. Participants of the study constituted a national representative sample of about 1000 students selected randomly from elementary, middle, and secondary schools in Oman. The exploratory factor analysis results showed that all subtests loaded on a single factor. Also, the results showed an evidence of reliability as Cronbach's alpha values ranged from .82 to .94 for the six subscales. The MANOVA results indicated that males outperformed females in the geometric scale while females showed more developmental progress in the pictorial scale.