Dr Clare Mackay, Associate Professor, Department of Psychiatry, gives a talk for the Oxford Conference on Psychiatry and Ageing. The MRC Dementia's platform is facilitating greater connections between dementia research cohorts to boost research. Clare Mackay describes the breadth and scope of this project, and the tremendous potential that linking data across large cohorts can have for research discoveries in dementia. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/