D R Royall

Clock Drawing Test 1995

D R Royall, 2006 .

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

D R Royall, D. Royall, M. Polk, 1999, The journals of gerontology. Series B, Psychological sciences and social sciences.

Precis of executive dyscontrol as a cause of problem behavior in dementia.

D R Royall, D. Royall, 1994, Experimental aging research.