Table 1.

Demographic information and symptom ratings.

	Patients (n = 76)		Normal controls (n = 66)
	Mean	SD	Mean	SD
Age*	46.3	10.1	37.7	9.8
Parental education	12.8	2.9	13.5	2.5
Percent female	20%		27%
BPRS
Total score	43.6	9.9
Factors (mean score per item)
Depression/anxiety	1.9	0.7
Positive symptoms	2.2	0.9
SANS global scores
Affective flattening	1.6	1.3
Alogia	0.7	1.0
Avolition	2.2	1.4
Anhedonia	2.7	1.8

*p < 0.01, for difference between controls and patients.