During a clock-drawing test for dementia, an examiner asks the person to draw a clock, add the numbers, and set the hands to a stated time—often 11:10. The examiner then checks whether the numbers and hands are complete and correctly placed. The task is a brief cognitive screen: a quick check for possible thinking problems that may require further evaluation. It cannot diagnose dementia or identify its cause by itself.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What will the examiner ask you to do?
- Why are three words sometimes included?
- How is the clock scored?
- What does an abnormal result mean?
- What should happen after the test?
What will the examiner ask you to do?
Instructions vary by screening method. In a common Mini-Cog version, the examiner may provide a blank sheet or a preprinted circle.
The person is asked to: The Mini-Cog instructions say the examiner stops the clock task after three minutes if it remains unfinished. The examiner then moves to the word-recall part of the screen.
- Draw a clock or use the circle provided.
- Put every clock number in the correct place.
- Draw the hands to show 11:10.
Why are three words sometimes included?
Clock drawing may appear within a broader screening tool rather than as an isolated task. The Mini-Cog combines the drawing with recall of three words spoken earlier, sampling short-term memory as well as clock-drawing performance. A person therefore may hear three words, complete the clock, and then be asked to repeat those words.
difficulty with either part can affect the overall screening result. Other procedures may differ. For example, the MoCA also asks the person to draw a clock, include all numbers, and show 11:10, while another primary-care screen separately emphasizes correctly spaced hour numbers. The exact wording, order, and scoring method can depend on the tool being used.
How is the clock scored?
Under Mini-Cog scoring, a normal clock receives two points. The numbers must be complete, appear in sequence, and sit in approximately correct positions. The hands must point to 11 and 2 to represent 11:10.
An abnormal, incomplete, refused, or unfinished clock receives zero points under this method, according to the Alzheimer's Association's Cognitive Impairment Care Planning Toolkit. That result applies to the clock portion; the examiner also scores recall of the three words. Because clock-drawing methods are not fully standardized, a score should be interpreted according to the particular screening tool. A result from one method may not translate directly to another.
What does an abnormal result mean?
An abnormal clock or low Mini-Cog result means possible cognitive impairment was present at the time of testing. It does not prove that the person has dementia.
The Mini-Cog FAQ notes that illness, medicines, and other conditions can temporarily affect cognition. The screen also cannot show what caused the difficulty. A person might struggle with the drawing, word recall, or both, but the result alone cannot establish mild cognitive impairment or dementia.
What should happen after the test?
An abnormal brief screen should lead to further evaluation or a specialist referral, according to the Alzheimer's Association guidance for clinicians. The next assessment looks beyond one drawing to determine whether a cognitive disorder is present.
A full dementia assessment combines medical history and examinations with cognitive and functional testing. Depending on the circumstances, it may also include brain imaging, cerebrospinal-fluid testing, or blood tests.
