Table 1.

Sample characteristics.

Measure	CHR (n = 19)	HC (n = 20)	F	P
Sex (% male)	63.2%	50%	0.663	0.421
Age	20.629 (1.510)	20.987 (1.821)	0.442	0.510
Race (% white)	63.16%	60%	0.194	0.662
Medication	-	-	-	-
Current antipsychotic (% taking, #)	10.5% (2)	0%	2.232	0.144
Current antidepressant (% taking, #)	15.8% (3)	0%	3.558	0.067
Current stimulant (% taking, #)	15.8% (3)	0%	3.558	0.067
Current mood stabilizer (% taking, #)	26.3% (5)	0%	6.778	0.013*
Clinical Symptoms	-	-	-	-
Current SCID diagnosis (%, #)	52.63% (10)	0%	21.083	<0.001**
Lifetime SCID diagnosis (%, #)	78.95 (15)	7.5% (2)	34.567	<0.001**
Current depression (BDI)	17.526 (13.247)	2.500 (3.395)	24.099	< 0.001**
Current anxiety (BAI)	19.737 (13.584)	4.000 (4.304)	24.303	< 0.001**
Total positive symptoms (SIPS)	11.105 (5.227)	0.300 (0.657)	84.184	<0.001**
Total negative symptoms (SIPS)	12.105 (8.116)	0.300 (0.657)	42.080	<0.001**
Total social anhedonia (SAS-R)	16.316 (9.972)	5.200 (4.124)	21.078	<0.001**
Anticipatory anhedonia (TEPS)	3.547 (0.901)	4.500 (0.463)	10.240	0.004**
Consummatory anhedonia (TEPS)	4.687 (0.927)	4.776 (0.722)	0.070	0.794

Abbreviations: CHR – clinical high-risk; HC – healthy control. SCID – Structured Clinical Interview for DSM-IV; BDI – Beck Depression Inventory; BAI – Beck Anxiety Inventory; SIPS – Structured Interview for Psychosis-Risk Syndromes (positive symptom range 0–30, negative symptoms range 0–36, higher scores indicate greater severity); SAS-R – Social Anhedonia Scale – Revised (symptom range 0–40, higher scores indicate greater anhedonia); TEPS – Temporal Experience of Pleasure Scale (symptom range 1–6, higher scores indicate less anhedonia).

^*p < 0.05.

^**p < 0.01.