Clock drawing is sensitive to executive control: A comparison of six methods

Donald R. Royall, Amy R. Mulroy, Laura K. Chiodo, Marsha J. Polk

Research output: Contribution to journalArticlepeer-review

135 Scopus citations


We examined six clock-drawing task (CDT) scoring systems relative to the Executive Interview (EXIT25, a measure of Executive Control Function [ECF]) and the Mini-Mental State Exam (MMSE). Subjects included n = 33 National Institute of Neurological, Communicative Disorders, and Stroke 'probable' Alzheimer's disease (AD) eases and n = 52 independent living controls. AD cases and controls differed on the EXIT25, MMSE, and all CDTs. All CDTs were significantly correlated with the EXIT25 (ranging from r = .56 to r = .78). These associations generally persisted after adjusting for Age, Education, and MMSE scores. In backwards stepwise linear multivariate regression models, only CLOX: An Executive Clock-Drawing Task scores contribute significantly to EXIT25 scores (R2 = .68) and MMSE scores (R2 = .72). Clock drawing draws upon both executive and general cognitive resources. CLOX explains incrementally more variance in ECF than other CDTs.

Original languageEnglish (US)
Pages (from-to)P328-P333
JournalJournals of Gerontology - Series B Psychological Sciences and Social Sciences
Issue number5
StatePublished - Sep 1999

ASJC Scopus subject areas

  • Health(social science)
  • Sociology and Political Science
  • Life-span and Life-course Studies


Dive into the research topics of 'Clock drawing is sensitive to executive control: A comparison of six methods'. Together they form a unique fingerprint.

Cite this