Table 4.

Clinical Descriptors and neuropsychological performance for patients with schizophrenia spectrum disorder with (≥ 6 mm) and without (≤ 2 mm) abnormally large CSP

Variable	With Large CSP			Without Large CSP			Analysis
	N	Mean	S.D.	N	Mean	S.D.	t	P<
Clinical Variables
SAPS, total	9	9.7	3.0	29	8.2	4.5	0.91	0.37
SANS, total	9	11.8	2.9	29	8.6	4.7	1.92	0.06
BPRS, total	9	50.3	9.9	29	45.6	10.4	1.19	0.24
Intellectual abilities
WAIS-III Digit Span	9	8.2	3.3	30	9.7	2.0	1.20	0.24
WAIS-III Digit Symbol	10	7.0	2.9	31	6.9	3.1	0.08	0.94
Executive functions
WCST, categories	10	3.4	2.3	30	4.6	1.9	1.69	0.10
WCST, perseverative errors	10	23.0	10.8	30	15.5	11.7	1.78	0.08
Verbal memory
CVLT-II, trials 1–5	10	32.7	10.0	30	45.9	11.7	3.20	0.003
CVLT-II, short delayed recall	10	6.6	3.1	30	9.4	3.3	2.32	0.03
CVLT-II, 20’ delayed recall	10	6.6	3.3	30	9.8	3.1	2.52	0.02
Psychomotor speed: Thumb
Finger Sequencing
Right hand	10	7.9	2.6	30	8.5	1.4	0.70	0.50
Left hand	10	7.8	2.5	30	8.3	1.7	0.66	0.51
Expressive language
Sentence Comprehension	10	10.1	1.2	30	10.7	1.8	1.01	0.32
Attention/Concentration: CPT
Simple Reaction Time, Accuracy	9	29.6	0.7	28	28.4	3.5	1.63	0.11
Simple Reaction Time, RT	9	315.2	46.9	28	339.2	90.5	0.76	0.45
Vigilance, Accuracy	9	23.1	6.8	28	27.3	5.0	2.00	0.06
Vigilance, RT	9	423.0	77.8	28	453.8	100.1	0.95	0.35
Distractibility, Accuracy	9	11.7	13.7	26	16.2	12.1	1.04	0.30
Distractibility, RT	9	476.3	128.7	26	472.4	73.6	0.09	0.93

Abbreviations: WAIS-III, Wechsler Adult Intelligence Scale, Third Edition; WCST, Wisconsin Card Sorting Test; CVLT-II, California Verbal Learning Test, Second edition; RT, Reaction Time (in milliseconds), CPT, Continuous Performance Test.