Useful for?
Localization, BST, and neuroplasticity.
Method
Quasi experiment with MRI (correlational study)
Aim
To investigate neuroplasticity in the brain of London taxi drivers, and further explore the functions of the hippocampus in spatial memory.
Participants
16 healthy, right handed male taxi drivers between the ages of 32-62, and between 1.5-42 years of experience.
50 healthy, right handed males (not taxi drivers)
Procedure
MRI scans were compared between the two groups
Researchers correlated the # of years of experience with the MRI scan results
Findings
Taxi drivers had an increased grey matters in the posterior hippocampus vs the control group
The control group had more grey matter in the anterior hippocampus
There was a positive correlation between the years of experience and grey matter in the posterior hippocampus
Strengths
Natural experiment: high ecological validity
Control group present
Clear variables allow for replicability
Limitations
Natural experiment: low control of confounding variables
Small sample size