In an investigation into neuroplasticity among licensed London taxi drivers, researchers analysed the association between the duration of time spent working as a taxi driver and the volume of grey matter in the posterior hippocampus. Explain the purpose of using a correlation in this investigation.
49 exam-style questions on OCR A Level Psychology Brain plasticity, covering Blakemore and Cooper (1970): Impact of early visual experience and Maguire et al. (2000): Taxi drivers. Each one has a worked solution and a mark scheme showing where the marks go.