Table 1.
Participant characteristics.
| Measure | Taxi drivers Mean (SD) | Control participants Mean (SD) |
|---|---|---|
| Age (years) | 42.1 (5.37) | 38.72 (5.85) |
| Education (age left school, years) | 16.45 (0.94) | 16.72 (1.22) |
| Estimated verbal IQ (WTAR) | 98.66 (3.91) | 100.3 (5.17) |
| Matrix reasoning scaled score (WASI) | 8.9 (1.88) | 8.38 (2.54) |
| Handedness – laterality indexa | 87.05 (40.46) | 83.83 (39.18) |
| Years experience taxi driving | 13.27 (7.86) | – |
WTAR = Wechsler Test of Adult Reading; WASI = Wechsler Abbreviated Scale of Intelligence.
a
Edinburgh Handedness Inventory.