Table 1.

Demographic and Clinical Characteristics

Standard CFT	Controls (n=23)	Patients (n=18)
Age	36.5±11.5	38.9±7.2
Gender (M/F)	12/11	10/8
Parental Socioeconomic Status	50.1±10.3 (n=23)	43.3±19.7 (n=12)
Quick Test IQ	110.6 ± 10.3 (n=17)	98.7 ± 11.6* (n=15)
Schizophrenia/Schizoaffective Disorder		14/4
Chlorpromazine daily equivalent, mg		1192.4 ± 552.8
BPRS total score		34.5 ± 10.1 (n=15)
SANS total score (including global scores)		32.7 ± 17.2 (n=15)
Brief CFT	Controls (n=17)	Patients (n=21)
Age	34.6±9.9	34.9±8.4
Gender (M/F)	15/2	20/1
Parental Socioeconomic Status	41.8±12.6 n=17	39.6 ± 13.4 n=13
Quick Test IQ	109.1 ± 7.0 (n=16)	98.7 ± 8.1* (n=19)
Schizophrenia/Schizoaffective Disorder		18/3
Chlorpromazine daily equivalent, mg		1086.7 ± 522.4
BPRS total score		45.4 ± 12.5
SANS total score (including global scores)		44.7 ± 13.5

Values are mean±SD. Numbers of subjects per group are noted when there is missing data. Socioeconomic status was measured by the 4-factor Hollingshead Scale (Hollingshead, 1975). IQ was measured using the Quick Test (Ammons and Ammons, 1962). Abbreviations: CFT, Closure Flexibility Test; M, male; F, Female; BPRS, Brief Psychiatric Rating Scale (Overall and Gorham, 1962); SANS, Schedule for Assessment of Negative Symptoms (Andreasen, 1984).

^*p<0.05