The Relationship among the Test of Nonverbal Intelligence,Ammons' Quick Test,and Wechsler Intelligence Scale for Children-Revised

Abstract

The relationship among IQs of the Wechsler Intelligence Scale for Children-Revised (WISC-R), Test of Nonverbal Intelligence (TONI), and Quick Test (QT) were investigated. The sample consisted of 51 subjects whose grade placements ranged from second to eighth grades and whose ages ranged from 7-2 to 15-5. Analysis of variance with repeated measures was used to analyze the data and the new Duncan Range Test was used to identify significant differences among pairs of scores. The results indicated that the subjects scored significantly higher on the TONI than on the WISC-R Verbal and Full Scales. No differences were found between the TONI and QT IQs nor between the QT IQs and the WISC-R IQs. Correlation coefficients ranged from a low of .57 between the WISC-R Verbal IQ and TONI to a high of .91 between the WISC-R Full Scale and Verbal Scale. Implications for the use of the TONI, QT, and WISC-R by clinicians were discussed.

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