Abstract: Clock drawing test is used widely to study and test the cognitive deficits and the cognitive decline in old population and proved to be a useful screening tool for dementia patient. There are some studies in normal children and ADHD children recently. The cognitive processes and factors involved in clock drawing test and the relationship between clock drawing test and executive functions are reviewed. The study of clock drawing test in ADHD children is important and practical for it’s simple and can be used to screen ADHD children quickly.

Key words: clock face drawing, ADHD children, executive functions