1. Wechsler Bellevue I 1939
   1. WAIS 1955
      1. WAIS-R 1981
         1. WAIS-III 1997
            1. WAIS-IV 2008
2. Wechsler Bellevue II 1946
   1. WISC 1949
      1. WISC-R 1974
         1. WISC-III 1991
            1. WISC-IV 2003
      2. WPPSI 1967
         1. WPPSI-R 1989
            1. WPPSI-III 2002