The field of intelligence testing has been revolutionized by Alan S. Kaufman. He developed the Wechsler Intelligence Scale for Children–Revised (WISC-R) with David Wechsler, and his best-selling book, Intelligent Testing with the WISC-R, introduced the phrase 'intelligent testing'. Kaufman, with his wife, Nadeen, then created his own series of tests: the Kaufman Assessment Battery for Children (K-ABC), the Kaufman Test of Educational Achievement (K-TEA), the Kaufman Brief Intelligence Test (K-BIT), and many others. The K-ABC, the first major intelligence test to challenge the Wechsler, helped raise the bar for future tests. This is a celebration of his life's work, with contributions by a 'who's who' in IQ testing, including Bruce Bracken, Dawn Flanagan, Elaine Fletcher-Janzen, Randy Kamphaus, Nancy Mather, Steve McCallum, Jack Naglieri, Tom Oakland, Cecil Reynolds, and Robert Sternberg, is edited by his son James, and features essays expanding on his work and ideas from former colleagues.