DCTclock transforms the familiar Clock Drawing Test into a sensitive measure of cognitive function.

The traditional Clock Drawing Test is a well-established and widely used pen and paper cognitive assessment in which individuals draw the face of a clock showing a specific time on a blank page, then copy a pre-drawn clock. The traditional test is administered only if impairment is suspected and is only useful if the participant is overtly impaired. Even then, only the final drawing is subjectively analyzed, and therefore unreliable in scoring and interpretation.

DCTclock analyzes behavior signals that have to date remained hidden to traditional testing methods.

DCTclock innovates on the traditional Clock Drawing Test

Can detect subtle cognitive impairment in normal appearing participants
Entire drawing process evaluated
Consistent scoring across administrators and sites
Perfect inter-rater reliability
Playback of drawing process with precise timing for deep insights
Healthy and pathological databases for relative analysis
Use of both command and copy conditions enabling ability to use the participants as their own control
Ability to rerun historical data for new hypotheses without retesting the participants
Cleverly designed to simply and efficiently capture features of cognitive performance
Detects problems that interview and verbal assessments miss
Easy to administer
how it works

How it Works

Before overt symptoms manifest, people may appear to function normally by subconsciously compensating for cognitive impairment in a variety of ways, including subtle delays while they take additional time to think. DCTclock measures time-stamped drawing data, which captures the entire drawing process. Analyzing both process and output in this patented manner provides the ability to see through compensatory strategies and detect cognitive indicators invisible to other testing methods.

DCT collects incredibly detailed information during this simple test and analyzes over 700 individual features of both the clock drawing and the process that produced it. We then compare those features with our proprietary database of over 4,500 healthy and pathological tests to objectively score areas of cognitive state including memory, language processing, spatial planning, and executive function.

Can you tell which clock below shows signs of cognitive impairment? If you can’t you’re not alone. Even trained professionals can’t reliably identify the impaired clock and differ in their subjective analysis of potential impairment.

DCT can tell you which clock has hidden signs of impairment. Contact us to find out.

clocks Contact Us
Patient & Administrator Experience

Participant and administrator experience is quick & easy

Total administration, processing, and reporting time is less than 5 minutes. The hardware footprint is smaller than a box of tissues, and there is zero local software. The report is ready to view, print, and hand to the investigator before the scheduled participant appointment.

results charts

Within seconds of completing the test, the encrypted time-stamped coordinate data is sent to our secure and HIPAA-compliant servers, where it is decrypted, analyzed, and a detailed report is prepared.

The report can be viewed using DCTreports, a HIPAA-compliant, secure web portal accessible from any computer with an internet connection. Reports can be viewed on screen or downloaded as a PDF or data file.