![]() ![]() The CDT is not a definitive diagnostic tool for any particular condition. Is the clock-drawing test accurate for diagnosing schizophrenia? Preservation: Repetitive drawings, like creating multiple clock hands, also links with executive function decline.Special/planning deficits: Errors in the clock drawing’s number layout may suggest impairment in the brain’s right parietal lobe.Conceptual deficits: Clock drawings that don’t look like clocks can indicate semantic memory impairment.Stimulus-bound response: Drawing an accurate hour hand with a minute hand positioned to a number rather than the requested time (Eg: Instead of positioning the minute hand at the “2” in the request of “10 after 11,” the person puts the minute hand to the “10.”) can indicate executive function decline.Graphical difficulties: An accurate clock drawing with imprecise lines can indicate a cognitive decline in areas of fine motor control and planning.“Cognitive functions are one’s abilities to learn through our senses, thoughts, and experiences.”Ĭommon deficits the CDT can reveal include: Joanna Gan, a board certified neurologist at the Veteran’s Health Administration from Sacramento, California. “The clock-drawing test is a way to test, primarily, a couple of cognitive functions,” explains Dr. The CDT doesn’t definitively diagnose cognitive decline conditions, but it can point out areas where you’re experiencing cognitive changes. The healthcare professional assesses the drawing for the number placement accuracy, the position of the clock hands, and the drawing’s overall organization. The CDT is a simple test that people can score in several ways, with no scoring system considered better than the rest.Ī healthcare professional usually asks you to draw a clockface that’s not digital, and they give you specific instructions about how it should look and what time it should indicate. ![]() ![]() It’s a decades-old test primarily used to detect dementia, a type of impairing memory loss and cognitive decline seen across many physical and mental health conditions. The CDT is not specific to schizophrenia. ![]()
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