Psychiatry Investig.
2014 Jan;11(1):39-43.
A Normative Study of the Digit Span in an Educationally Diverse Elderly Population
- Affiliations
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- 1Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea. selfpsy@snu.ac.kr
- 2Interdisciplinary Program for Cognitive Science, Seoul National University Hospital, Seoul, Republic of Korea.
- 3Department of Neuropsychiatry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea.
- 4Department of Neuropsychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea.
- 5Department of Neuropsychiatry, Gyeonggi Provincial Hospital for the Elderly, Yongin, Republic of Korea.
- 6Department of Psychiatry, Kangwon National University Hospital, Chuncheon, Republic of Korea.
- 7Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
Abstract
OBJECTIVE
The purpose of this study was to explore the effect of demographic variables on Digit Span test (DS) performance in an educationally diverse elderly population and to provide normative information.
METHODS
The DS was administered to 784 community-dwelling volunteers aged 60-90 years with an educational history of from zero to 25 years of full-time education. People with serious neurological, medical and psychiatric disorders (including dementia) were excluded.
RESULTS
Age, education and gender were found to be significantly associated with performance on the DS. Based on the results obtained, DS norms were stratified by age (2 strata), education (3 strata), and gender (2 strata).
CONCLUSION
Our results on DS performance suggest that both attention and working memory are influenced by age, education and gender. The present study provides reasonably comprehensive normative information on the DS for an educationally diverse elderly population.
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