Table 1.

Descriptive Statistics, Item-Total Correlations, and Stability Estimates for BNSS Items, Subscales, and Total Score

	Time 1 (n = 100)				Item-total Score Correlation	Time 2 (n = 37)				Time 2-1 Difference (n = 37)		Stability Correlation
	M	SD	Skew	Kurtosis	r	M	SD	Skew	Kurtosis	M	SD	r
Anhedonia Subscale
1. Intensity of Pleasure	1.6	1.4	0.3	−1.1	0.64***	1.2	1.3	0.4	−1.4	−0.3	1.0	0.69***
2. Frequency of Pleasure	2.5	1.5	−0.1	−0.8	0.77***	2.0	1.5	0.3	−0.77	−0.7	1.1	0.72***
3. Intensity of Future Pleasure	0.7	1.2	1.7	1.8	0.31**	0.5	1.0	1.6	1.2	0.0	1.2	0.34*
Subscale Total	4.7	3.3	0.3	−0.7	--	3.7	3.3	0.8	−0.2	−1.0	2.1	0.78***
Distress Subscale
4. Lack of Normal Distress	1.0	1.8	1.7	1.7	0.57***	0.6	1.1	2.1	4.3	−0.2	1.2	0.74***
Asociality Subscale
5. Asociality Behavior	2.4	1.8	0.3	−0.8	0.83***	2.4	1.5	0.3	−0.6	−0.2	1.4	0.67***
6. Asociality Inner-Experience	1.8	1.8	0.8	−0.5	0.85***	1.7	1.8	0.8	−0.5	−0.2	1.0	0.84***
Subscale Total	4.3	3.4	0.6	−0.5	--	4.1	3.1	0.6	−0.5	−0.4	2.1	0.82***
Avolition Subscale
7. Avolition Behavior	2.6	1.8	0.0	−1.2	0.79***	2.2	1.7	0.2	−1.0	−0.1	0.9	0.86***
8. Avolition Inner-Experience	2.2	1.9	0.2	−1.4	0.80***	1.8	1.7	0.5	−1.0	−0.4	0.8	0.91***
Subscale Total	4.8	3.5	0.1	−1.3	--	4.0	3.2	0.4	−1.0	−0.5	1.6	0.91***
Blunted Affect Subscale
9. Facial Expression	2.5	1.8	0.0	−1.2	0.85***	2.2	1.7	0.1	−1.2	−0.2	1.2	0.75***
10. Vocal Expression	2.0	1.9	0.5	−1.1	0.87***	1.9	1.9	0.6	−0.6	0.1	1.3	0.78***
11. Expressive Gestures	2.3	1.9	0.2	−1.2	0.84***	1.8	1.8	0.6	−0.9	−0.2	1.2	0.82***
Subscale Total	6.7	5.3	0.2	−1.2	--	5.9	5.1	0.3	−1.4	−0.4	2.7	0.87***
Alogia Subscale
12. Quantity of Speech	1.2	1.7	1.3	0.5	0.84***	1.1	1.3	1.6	3.7	0.3	0.9	0.80***
13. Spontaneous Elaboration	1.4	1.8	1.1	−0.1	0.78***	1.0	1.4	1.5	2.5	0.2	1.2	0.68***
Subscale Total	2.6	3.5	1.2	0.3	--	2.1	2.7	1.6	3.5	0.5	1.9	0.91***
BNSS Total Score	24.1	17.0	0.5	−0.5	--	20.3	14.8	0.6	−0.4	−1.9	6.1	0.93***

Note.

^*p < 0.05;

^**p < 0.01;

^***p < 0.001