 An important feature of the KABC is that it yielded smaller than average score differences than was typical between African American and European American ethnic groups, making it particularly useful when assessing children of difference ethnicities.The second edition (KABC-II) which was published in 2004, is an individually administered measure of the processing and cognitive abilities of children and adolescents aged 3–18.As with the original KABC, the KABC-II is a theory-based instrument.