Psychology (Physiological approach) core study - "Navigation-related structural changes in the hippocampi of taxi drivers."
Maguire et al. were attempting to demonstrate the plasticity of the brain. Plasticity refers to changes that occur in the organisation of the brain as a result of experience. The researchers studied the hippocampus of London taxi drivers because they were interested to see if the hippocampus would change because of the taxi drivers' high dependence on navigational skills.