Psychometric Properties
The KABC-II was standardised between 2001-2003 on 3,025 3-18 year olds in 39 states and the District of Columbia. The KABC-II is co normed with the KTEA-II (Kaufman & Kaufman, 2004b). Correlation studies have been completed with: KABC, WISC, WISC-III, WPPSI-III, KAIT, WJ-III COG, PIAT-R, WJ-III ACH and WIAT-II. Special group studies (clinical validity studies) included: those with Emotional Disturbances, ADHD, Autistic Disorder, Mental Retardation, Learning Disability (Written expression, Mathematics and Reading) and those classed as Gifted.
The internal consistency reliability coefficient for core and supplementary subtests demonstrate the KABC-II has good reliability. The median reliability for the 3-6 age band is .85 (range .69-.92) and .87 (range .74-.93) for 7-18. Retest reliabilities of the global scales ranged from 0.72 to 0.94 where retest stability increasing with age.
Read more about this topic: Kaufman Assessment Battery For Children
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