Taxi Drivers + Hippocampus
London black-cab drivers- 16 MALE licensed drivers who had passed "the knowledge".All right handed and between the ages of 32-62 (mean 44).
Method: Quasi experiment!
No variables were manipulated and data was collected from analyzing MRI scans.
Voxel-based morphology (VBM) and pixel counting.
More grey matter in both hippocampi of the cab drivers but only in the posterior (back) hippocampi.
The longer they had been a cab-driver the greater the volume of their right posterior hippocampus. The hippocampus increases in size with use over time.