Controls

^{Mild AD}

Moderate AD

^{Omnibus Tests}

^{Wechsler intelligence scale}

^{Full - scale IQ}

126 ± 10

117 ± 8

  92 ± 17**

^{Deviation quotients}

^{Verbal comprehension}

129 ± 10

123 ± 9

102 ± 17**

^{Memory and distractibility}

116 ± 13

113 ± 8

  90 ± 15**

^{Perceptual organization}

119 ± 13

109 ± 13

  84 ± 26**

^Memory

^{Wechsler memory scale}

^{Immediate story recall}

  22 ± 15

  11 ± 15**

    5 ± 3**

^{Immediate figure recall}

  10 ± 3

    7 ± 4*

    1 ± 2**

^{Delayed story recall}

  17 ± 5

    2 ± 4**

    1 ± 1**

^{Delayed figure recall}

    7 ± 3

    1 ± 1**

    0 ± 1**

^{Attention, planning and abstract reasoning}

^{Trailmaking (Trail A) (sec)}

  40 ± 17

  54 ± 30

153 ± 98**

^{Trailmaking (Trail B) (sec)}

  82 ± 40

192 ± 155*

428 ± 139**

^{Stroop color- word inference, no/45s}

  37 ± 8

  24 ± 8*

  12 ± 8**

^{Porteus mazes (age in years)}

 15.4 ± 1.6

12.8 ± 3.9

 7.7 ± 3.8**

^Language

^{Syntax comprehension}

 24 ± 2

  23 ±  2

  17 ± 5**

^{Controlled word association (FAS)}

 42 ± 2

  34 ± 13

  25 ± 12**

^{Boston naming}

 37 ± 4

  35 ± 7

  25 ± 8**

^{Visuospatial Function}

^{Extended range drawing}

 21 ± 2

  19 ± 4

 13 ± 5**

^{Hiskey - Nebraska block patterns}

 15 ± 4

  11 ± 5

   4 ± 3**

^{Benton facial recognition}

 44 ± 4

  42 ± 5

 39 ± 5*