Feasibility Study of Game Technology in the Early Diagnosis of Mild Cognitive Impairment and Alzheimer's Disease

This study will test G:DATA, a simple computer game designed to diagnose Alzheimer's Disease, in three different groups of people, some of whom have Alzheimer's Disease. It will look at whether the results of G:DATA match the results of tests that are used to diagnose people with Alzheimer's Disease now. The Investigators will also ask patients and healthcare staff for participant views on the G:DATA game.