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Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach

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Published on: February 14, 2014

Clock drawing performance in cognitively normal elderly.

Emily J Hubbard¹, Veronica Santini, Christiaan G Blankevoort

¹Alzheimer's Disease Clinical and Research Program, Department of Neurology, Boston University School of Medicine, Boston, MA, USA.

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists

|February 5, 2008

Summary

This summary is machine-generated.

The Clock Drawing Test (CDT) provides insights into cognitive function in older adults. This study establishes new normative data for the CDT, revealing a wider range of scores considered normal than previously thought.

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Area of Science:

Neuropsychology
Gerontology
Cognitive Assessment

Background:

The Clock Drawing Test (CDT) is a widely used neuropsychological tool for assessing cognitive changes and functional abilities in older adults.
Adequate normative data for interpreting CDT scores are currently lacking, hindering precise clinical application.

Purpose of the Study:

To establish normative data for the Clock Drawing Test (CDT) using three common scoring systems.
To investigate the influence of age and education on CDT performance in cognitively normal elderly individuals.

Main Methods:

The study analyzed CDT scores from 207 cognitively normal elderly participants.
Three established scoring systems were employed and evaluated for correlation and inter-rater reliability.
Statistical analyses examined differences based on age and WRAT-3 Reading scores.

Main Results:

The three scoring systems demonstrated good correlation, efficiency, and high inter-rater reliability.
Significant differences in CDT scores were observed related to age and WRAT-3 Reading scores (a proxy for education quality).
The study presents detailed means, standard deviations, and t- and z-scores for various subgroups.

Conclusions:

Normative data for the CDT indicate a broader range of scores considered within the normal performance spectrum than previously reported.
These findings provide valuable comparative data for clinicians evaluating the cognitive performance of elderly patients.
The study underscores the importance of considering age and educational background when interpreting CDT results.