The clock drawing test
(CDT) is an easy-to-use, fast and reliable paper-and-pencil test that has been used for over 30 years for the evaluation of planning, ranking, and abstract thinking skills and visual-motor functions (3,4,5,6,7).
(2) Neurocognition evaluation: on the second day of enrollment, the Clock Drawing Test
, Trail Marking Test, Digit Span Test, Auditory Verbal Learning Test, Wisconsin Card Sorting Test, Verbal Fluency Test, Semantic Similarity Test and Stroop Color-Word Test were conducted, and the scores were calculated.
Mini mental state examination score was 28/30 (memory and copying parts), clock drawing test
score was 3/7, and Montreal cognitive assessment score was 17/30 (losses in all parts except orientation) (Table 2).
Assessment of Prefrontal Cortical Functioning: Clock Drawing Test
: Executive Function: Participants were presented with a pre-drawn circle and were instructed to place numbers so that it looks like a clock.
The following tests of this battery were used for this study; Clock Drawing Test
, Rey-Osterrieth Complex Figure Test (ROCF) copy task , Block Design Test , and verbal Digit Span forward .
The clock drawing test
has a score range of 0 to 5: 1 point for a circle, 1 point for all numbers, 1 point if all numbers are well distributed within the circle, and 2 points if both hands are well drawn and placed on the correct numbers (1 point if only one hand is placed on the correct number).
The cognitive test battery included the examination of visuospatial skills (clock drawing test
) and attentive functions and mental flexibility (trail making test parts A and B).
The executive dysfunction manifested in performing clock drawing test
(part I), verbal fluency test, and Luria's tests for kinetic apraxia.
Penney discuss automated methods for evaluating the results of the clock drawing test
, which is widely used to screen for a variety of cognitive disorders such as Alzheimer's disease or stroke.
'A Farmer from Transkei');  the token test (short version);  Rey complex figure (RCF);  trail making tests A and B (TMT-A and -B);  the clock drawing test
 (the free-drawing version with the '10 past 11' time setting instruction using Rouleau's 10-point scoring system);  the Luria hand sequence;  and the Maze test.
In contrast, the Clock Drawing Test
(CDT) is a quick screening tool for dementia in the primary care setting.