Wisconsin card sorting test results for both slums (total n=12, two participants had incomplete results)
| Population | Non-perseverance error | Perseverance error | Total error |
| Chetla | 5.5 (4.9) | 6.3 (3.1) | 11.8 (5.1) |
| RG Kar | 4.4 (2.8) | 9.8 (5.2) | 14.2 (4.3) |
| Total | 5.0 (4.0) | 8.0 (4.6) | 13.0 (4.8) |
Values presented as mean (SD).