Table 3.
Working memory test data for right inferior parietal and focal superior parietal lesion groups
| No Lesion | Right InfPar Lesions | Focal SupPar Lesions | Kruskal-Wallis χ2 | p value | Significant between-group differences | |
|---|---|---|---|---|---|---|
| Digit Span Forward | 6.7 (1.2) | 7.0 (1.4) | 6.0 (1.1) | 2.3 | 0.32 | None |
| Digit Span Backward | 5.0 (1.4) | 5.5 (1.0) | 3.3 (0.8) | 8.9 | 0.01 | SupPar<No Lesion |
| SupPar<RightInfPar | ||||||
| Spatial Span Forward | 8.0 (1.5) | 9.3 (1.2) | 6.3 (2.9) | 5.9 | 0.05 | None |
| Spatial Span Backward | 7.7 (1.8) | 8.8 (0.8) | 6.7 (2.6) | 3.5 | 0.17 | None |
| Letter-Number Sequencing | 10.2 (2.4) | 11.0 (2.3) | 7.7 (1.0) | 8.8 | 0.01 | SupPar<No Lesion |
| SupPar<RightInfPar | ||||||
| Arithmetic | 15.0 (3.3) | 16.3 (1.5) | 10.5 (2.7) | 9.7 | 0.008 | SupPar<No Lesion |
| SupPar<RightInfPar | ||||||
| 0-Back errors | 1.7 (3.8) | 0.3 (0.8) | 2.3 (3.0) | 3.1 | 0.22 | None |
| 1-Back errors | 4.4 (5.4) | 3.8 (2.9) | 6.5 (5.0) | 1.7 | 0.44 | None |
| 2-Back errors | 7.9 (4.4) | 5.2 (3.8) | 11.3 (3.5) | 6.9 | 0.03 | SupPar>No Lesion |
| SupPar>RightInfPar | ||||||
| 3-Back errors | 9.6 (3.6) | 8.2 (3.0) | 12.0 (3.6) | 3.2 | 0.20 | None |
Means are presented with SDs in parentheses. Because of the small sample sizes, nonparametric tests were used to test for group effects and for the pairwise comparisons. Significant between-group differences were determined with the Mann–Whitney U test.