Journal article
Further analyses of clock drawings among demented and nondemented older subjects
Archives of clinical neuropsychology, v 11(3), pp 193-205
1996
PMID: 14588923
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In a previous article we described a 10-point scoring system (i.e., scale 1) to grade clock drawings to command and copy with hands set for “ten after 11” among demented patients. Alzheimer's subjects (AD) improved from the command to copy conditions, whereas subjects with ischaemic vascular dementia (IVD) did not. To investigate the underlying cognitive deficits responsible for this profile, an additional scale was developed (scale 2) that tallied errors in graphomotor functioning, hand/number placement, and executive control. On an independent sample of subjects, AD subjects, again, made significant improvement on scale 1 from the command to copy condition, whereas no such improvement occurred among the IVD subjects. On scale 2, IVD subjects made more graphomotor errors in the command condition, and more executive control and more total errors in the copy conditions than AD subjects. A number of positive correlations were noted between tests of language and memory on scale 1. By contrast, scores on tests of executive control declined as scale 2 errors increased. In addition, a principal component analysis indicated that scale 2 test performance loaded on a factor with other tests related to executive control. These results suggest that impairment in frontal systems functioning may explain why IVD subjects do not improve from the command to copy conditions on scale 1. Such a pattern of performance in clock drawing may also be helpful in making a differential diagnosis between AD and IVD.
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Details
- Title
- Further analyses of clock drawings among demented and nondemented older subjects
- Creators
- David J. Libon - Drexel UniversityBarbara L. Malamut - Department of Clinical Psychology Philadelphia Geriatric Center, USARodney Swenson - Department of Neurology Merit Care Neuroscience Center, USALaura Prouty Sands - Departments of Medicine and Psychiatry Medical College of Pennsylvania Eastern Pennsylvania Psychiatric Institute, USABlaine S. Cloud - Neuropsychology Program, Drexel University, USA
- Publication Details
- Archives of clinical neuropsychology, v 11(3), pp 193-205
- Publisher
- Elsevier
- Number of pages
- 13
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:A1996UB66200003
- Scopus ID
- 2-s2.0-0029886431
- Other Identifier
- 991021901315304721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Psychology
- Psychology, Clinical