Incremental validity and the Wechsler Intelligence Scales

Abstract

Throughout history, there have been several theories regarding the concept of human intelligence. Often, these theories play a major role in the development of assessment tools used to help identify children who are receive special education services. Currently, there are several new tests that are being developed that are used to make special education decisions. It is essential to examine how new tests or subtests of an assessment battery provide additional and useful information about special education decisions and services. A review of literature will be examined to determine what valuable information the new subtests and theoretical framework of the Wechsler Intelligence for Children-4th Edition (WISC-IV) provide. Additionally, attention will focus on determining if incremental validity is a validating approach.