Cookies on this website

We use cookies to ensure that we give you the best experience on our website. If you click 'Accept all cookies' we'll assume that you are happy to receive all cookies and you won't see this message again. If you click 'Reject all non-essential cookies' only necessary cookies providing core functionality such as security, network management, and accessibility will be enabled. Click 'Find out more' for information on how to change your cookie settings.

What happens if I decide to join?

When you join you create an online account. After you have registered with your background information you'll be asked to complete regular tests of memory and mood. These are online tests and you won't need to visit a study centre.