WIAT3 Tech Manual.pdf - CAMPBELA

Reliability and Validity 45WAIS–IVA total of 59 students, ages 16–17, were administered the WIAT–III and the WAIS–IV. Correlationsbetween the WIAT–III subtests and composites and the WAIS–IV Full Scale IQ, General Ability Index(GAI), Verbal Comprehension Index (VCI), and Perceptual Reasoning Index (PRI) scores are shown inTable J.1. The correlation between the WIAT–III Total Achievement composite and the WAIS–IV FullScale IQ (FSIQ) is .82. The FSIQ has correlations between .59 and .80 with the WIAT–III composites.The correlations between the WIAT–III composite scores and the WAIS–IV GAI, VCI, and PRI scoresrange from .42 to .81.WNVA total of 116 students, ages 4–19, were administered the WIAT–III and the WNV. Correlations betweenthe WIAT–III subtests and composites and the WNV Full Scale score are shown in Table J.1. The correlationbetween the WIAT–III Total Achievement composite and the WNV Full Scale score is .60. The WNVFull Scale score has correlations between .34 and .55 with the WIAT–III composites.DAS–IIA total of 120 students, ages 4–17, were administered the WIAT–III and the DAS–II. Correlationsbetween the WIAT–III subtests and composites and the DAS–II General Conceptual Ability, Verbalcomposite, and Nonverbal Reasoning composite scores are shown in Table J.1. The correlation betweenthe WIAT–III Total Achievement composite and the DAS–II General Conceptual Ability (GCA) is .67.The DAS–II GCA has correlations between .50 and .71 with the WIAT–III composites. The correlationsbetween the WIAT–III composite scores and the DAS–II Verbal and Nonverbal Reasoning compositescores range from .33 to .68.707070606060Percentage5040305040305040302020201010100WhiteAfrican Hispanic Asian OtherAmerican0Midwest0Northeast South West