Clock Drawing Test.
CDT
Visuoconstruction, executive function, planning, semantic/numeric knowledge (rapid dementia screen)
- Provisionally grouped under
- Length and format
- 1 drawing task (free-draw or pre-drawn circle, set to 11:10). clock drawing (performance), various scoring systems (e.g., Shulman 0-5, Sunderland, Rouleau, Freund) (clinician-rated/interview)
- Language versions
- Language-/culture-robust (numbers/clock universal in most cultures); used worldwide
- Licence
- public-domain / open
Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.
- Reference
- Shulman KI, et al. Int J Geriatr Psychiatry. 1986;1:135-140. Royall DR (CLOX). J Neurol Neurosurg Psychiatry. 1998;64:588-594.
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