Table 5. Descriptive statistics and inter-rater agreement for K- CAINS items.

Items	Mean	SD	Skewness	Item-total correlation	ICC
1. Social: Family Relationships	1.66	1.15	0.28	0.72	0.90
2. Social: Friendships	2.09	1.29	-0.07	0.76	0.93
3. Social: Past Week Pleasure	2.75	1.25	-0.86	0.77	0.90
4. Social: Expected Pleasure	2.92	1.09	-1.12	0.72	0.90
5. Work & School: Motivation	2.66	1.17	-0.63	0.60	0.90
6. Work & School: Expected Pleasure	3.05	0.95	-0.69	0.61	0.84
7. Recreation: Motivation	2.31	1.26	-0.37	0.79	0.92
8. Recreation: Past Week Pleasure	2.27	1.17	-0.21	0.78	0.91
9. Recreation: Expected Pleasure	2.76	0.94	-1.07	0.78	0.90
10. Expression: Facial	2.01	1.25	0.01	0.78	0.93
11. Expression: Vocal Prosody	1.80	1.21	0.19	0.82	0.92
12. Expression: Gestures	1.90	1.27	0.19	0.78	0.92
13. Expression: Speech	1.14	1.03	0.68	0.72	0.94

CAINS, Clinical Assessment Interview for Negative Symptoms.