Typically Children developing with ADHD children Variable M SD M SD t CA 90.8 9.1 87.8 7.7 .83 Nonverbal IQ 98.2 13.9 105.1 13.1 -1.2 ADHDT teacher rating 100.6 6.4 62.1 7.0 13.3(*) ADHDT parent rating 101.1 10.7 63.8 5.6 10.2(*) Note.
Measures used for selecting participants included the ADHDT, Stanford-Binet Intelligence Scale (Thorndike, Hage, & Sattler, 1986), and Wechsler Intelligence Scale for Children, Third Edition (WISC-III, Wechsler, 1991).
The ADHDT is a standardized, norm-referenced behavior checklist used to identify persons ages 3 to 23 who have ADHD.