Noting the lack of research comparing the Test of Nonverbal Intelligence (TONI) with other measures of intelligence, a study was conducted to ascertain concurrent validity. The TONI was compared to the Slosson Intelligence Test for Children and Adults (SIT) and the Wechsler Intelligence Scale for Children--Revised (WISC-R). Subjects, 43 males and…

Concern about the possible bias of using only verbal assessments for the identification of intellectually gifted students led to an examination of the effect of incorporating nonverbal assessments of intelligence into the identification process. Two nonverbal instruments (Progressive Matrices and Test of Nonverbal Intelligence) were used in…

The relationship of the Progressive Matrices Test (PM) to the Lorge-Thorndike Intelligence Test (LTIQ) and the Wechsler Intelligence Scale for Children (WISC) is examined. Predictive power of these measures with respect to a number of achievement measures was also investigated. The initial sample consisted of 242 first graders and 281 second…