Title

The Clock-Drawing Test: Time for a Change?

Document Type

Article

Publication Date

2008

DOI

10.1177/1533317508316680

Version

Citation

Publication Title

American Journal of Alzheimer’s Disease & Other Dementias

Keywords

Adult, Age Distribution, Aged, Aged, 80 and over, Algorithms*, Cohort Studies, Dementia/diagnosis, Dementia/physiopathology, Dementia/psychology, Humans, Middle Aged, Neuropsychological Tests/standards, Neuropsychological Tests/statistics & numerical data, Psychometrics/methods, Psychometrics/statistics & numerical data, Psychomotor Performance/physiology, Reproducibility of Results, Time Perception/physiology

Subject Categories

Nursing

Abstract

Clock-drawing tests are simple and rapid screening devices for dementia. It was observed that individuals (" . . .make the clock read 12:45") or an analog prompt (" . . .quarter to 1"), whereas individuals >70 years of age showed improved performance with an analog prompt. The digital prompt has routinely been used to force participants to recode the prompt via conceptualization. Differential scoring across a range of ages has likely derived from the advent and increase of digital clocks with the younger segment of the population. This implies the need for as-yet undetermined alteration in the nature of prompts to force recoding as the current younger population ages.

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