What is the "Clock Drawing Test" (CDT)?

What is the "Clock Drawing Test" (CDT)?

Gus Alva (Medical Director, ATP Clinical Research) gives expert video advice on: What do I do if I think a loved one has Alzheimer's disease?; How is Alzheimer's disease diagnosed?; Who can diagnose Alzheimer's disease or dementia? and more...

Clock drawing is pretty simple. You basically ask the individual to draw a clock, to have it have all the numbers, and then subsequently to draw the clock hands specifically specifying a time that you want them to point at. Now in essences, it's a useful tool because regardless of the individual's education, or their language -- their native tongue -- most anybody would be able to draw a clock. Distortions on any portion of the clock drawing would be indicative of some type of a cognitive problem.