Table 3.

Luria-Nebraska Neuropsychological Battery-I scores of normal (n=30) control, positive schizophrenia (n=30) and negative schizophrenia (n=30) patients

LNNB scales	Mean±SD			F-test
	Normal	Positive schizophrenia	Negative schizophrenia
Motor functions (C1)	31.73±3.40	42.5±7.96	49.9±15.5	23.95*
Rhthym functions (C2)	34.40±7.77	44.03±9.52	52.33±17.98	15.26*
Tactile functions (C3)	34.63±5.58	43.76±6.64	48.23±9.58	26.08*
Visual functions (C4)	44.93±7.08	54.80±12.51	56.56±11.50	10.43*
Receptive speech (C5)	34.40±7.77	44.03±9.52	52.33±17.98	15.26*
Expressive speech (C6)	34.13±6.02	39.63±8.98	46.56±15.91	9.43*
Writing (C7)	38.20±9.92	43.70±9.05	47.96±14.46	5.53*
Reading (C8)	38.30±6.09	42.83±5.26	48.10±11.89	10.49*
Arithmetic (C9)	40.43±7.26	43.83±5.26	57.20±21.9	11.96*
Memory functions (C10)	34.80±8.06	49.83±12.20	55.96±18.46	19.23*
Intellectual functions (C11)	42.00±9.45	50.06±9.81	56.66±16.98	10.23*

*Significant at 005 levels. SD – Standard deviation, LNNB – Luria-Nebraska Neuropsychological Battery