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Table 3 Mean raw scores of the neuropsychological parameters for the schizophrenic group with a high SANS score (S1), the schizophrenic group with a low SANS score (S2), and the control group (C) as well as significance of results

From: Neuropsychological and cerebral morphometric aspects of negative symptoms in schizophrenia: negative symptomatology is associated with specific mnestic deficits in schizophrenic patients

Neuropsychological test Schizophrenics high SANS-score (S1) Schizophrenics low SANS-score (S2) Controls (C)   Post-hoc analyses
  Mean SD Mean SD Mean SD F-value 1 S1 vs. S2* S2 vs. C* S1 vs. C*
WMS-R, logical memory I 22,80 5,73 29,40 6,15 33,28 6,97 6,58** n.s. n.s. p ≤0,01
WMS-R, logical memory II 15,70 5,98 25,10 5,61 29,63 8,54 8,34** p ≤0,05 n.s. p ≤0,01
NAI, wordlist trial I 6,20 1,03 7,90 1,97 8,22 2,79 1,97 n.s. n.s. n.s.
NAI, wordlist trial II 8,80 1,93 10,40 2,07 11,84 2,48 4,97** n.s. n.s. p ≤0,01
NAI, wordlist trial III 11,00 1,76 12,80 1,55 13,22 1,75 4,22** n.s. n.s. p ≤0,01
NAI, wordlist delayed 7,90 3,76 11,40 2,41 11,91 3,38 3,7** n.s. n.s. p ≤0,01
HAWIE-R, information 14,80 4,42 16,50 3,17 18,94 3,63 5,5** n.s. n.s. p ≤0,01
WMS-R, visual reproduction I 37,90 2,96 37,60 2,01 39,47 1,68 3,27* n.s. p ≤0,05 n.s.
WMS-R, visual reproduction II 34,60 6,29 37,50 1,90 39,13 2,20 5,36** n.s. n.s. p ≤0,01
HAWIE-R, digit span 15,60 3,17 14,50 2,80 17,25 4,53 1,89 n.s. n.s. n.s.
HAWIE-R, digit span forward 8,20 2,04 8,20 1,69 8,78 2,09 1,27 n.s. n.s. n.s.
HAWIE-R, digit span backward 7,40 1,84 6,30 1,49 8,47 2,85 2,34 n.s. n.s. n.s.
Stroop interference 84,00 23,08 90,70 24,22 63,56 11,97 7,85** n.s. p ≤0,01 p ≤0,01
Verbal fluency 30,10 9,83 30,70 7,76 41,34 15,51 2,75 n.s. n.s. n.s.
WCST, ntcc1 19,60 11,65 12,13 6,36 12,26 3,82 7,07** n.s. n.s. p ≤0,01
WCST, perseverative reactions 14,40 10,16 25,88 23,01 12,39 12,60 2,46 n.s. n.s. n.s.
WCST, perseverative errors 13,10 8,50 22,63 18,94 10,88 10,17 2,77* n.s. p ≤0,05 n.s.
  1. 1based on the Z-scores of the different neuropsychological test parameters.
  2. n.s. = not significant.
  3. WCST, ntcc1 = WCST, no. of trials to complete category.
  4. (Spearman rank correlation, * p ≤0,05, ** p ≤0,01).