The purpose of our study is to know and specify the intelligence closest to school success among the three indexes of the Wechsler Intelligence Scale for Children and Adolescents 5th Edition WISC-V. It’s a cognitive test administered for children between 6 years to 16 years 8 months. The Working Memory Index (WMI), the Processing Speed Index (PSI) and the Visuospatial Index (VSI) are the three indexes used for this study. The participants in this study are 87 students (39 girls and 48 boys) between the ages of 12 and 13. The all subtests of WISC-V are administering to urban and rural children. The results for the samples who are public school students show a very high average of the working memory index compared to the other two indexes. Also, the correlation of the Working Memory Index with the Continuous Assessment scores showed higher values compared to the other correlations.
Keywords: Intelligence, class notes, processing speed, visuospatial, working memory
