The clock draw test can be a window into the mind of a patient with dementia. Certain types of dementia show classic patterns on a clock draw test, which is why this test has become an important part of any dementia assessment.
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The erratic layout of numbers on this clock draw demonstrates a significant spatial processing deficit. This patient is known to have Alzheimer disease, and is likely to have problems with other spatial tasks, like typing on a keyboard or finding their way around.
To see more cases like this, visit Figure 1.