Table 1 Characteristics of Patient and Control Samples

Age (years)

34.8

7.2

36.6

6.8

t(38) = 0.81, p > .1

WRAT-R IQ

102.7

10.6

105.4

8.9

t(38) = 0.85, p > .1

WAIS-R IQ

87.6

8.2

105.9

10.8

t(38) = 6.04, p < .001

Digit span: Total

13.2

3.4

18.3

4.3

t(38) = 3.81, p < .001

   Digit span: Forward

7.1

1.8

9.2

2.4

t(38) = 3.03, p < .01

   Digit span: Backward

6.1

2.3

9.1

2.5

t(38) = 4.02, p < .001

Neuroleptic medication

19

0

   clozapine/olanzapine

14

-

   risperidone

7

-

   high potency drug*

1

-

   anticholinergics

1

-

   adjunctives**

10

-