Email updates

Keep up to date with the latest news and content from BMC Geriatrics and BioMed Central.

Open Access Research article

Social inhibition as a mediator of neuroticism and depression in the elderly

Nahathai Wongpakaran1*, Tinakon Wongpakaran1 and Robert van Reekum23

Author Affiliations

1 Department of Psychiatry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand

2 Department of Psychiatry, University of Toronto, Toronto, Canada

3 Institute of Medical Sciences, University of Toronto, Toronto, Canada

For all author emails, please log on.

BMC Geriatrics 2012, 12:41  doi:10.1186/1471-2318-12-41

Published: 2 August 2012

Abstract

Background

A number of factors, such as demographics, cognitive function, personality and interpersonal relationship) play a role in late-life depression. This study investigates the influence of social inhibition on the inverse emotional stability (neuroticism) and depressive symptoms found in elderly Thai people.

Methods

In total, 123 elderly Thais aged 60 years of age or older were tested using the 64-item Inventory of Interpersonal Problems, Symptom Checklist-90, and the 16 Personality Factors Questionnaire. Hierarchical regression and path analyses were performed in order to identify the relationships among these variables.

Results

The age of the participants ranged from 60 to 93 years old (mean = 71.7; SD = 6.2), and out of the group, 51.2% were male, 56.1% were married and 61.8% were on a low income. The average number of years spent in education among the participants was 7.6 (SD = 5.1). The variables found to be significantly associated with depression were age, intellect, social inhibition and possession of inverse emotional stability (neuroticism). Low levels of emotional stability were most strongly associated with depressive symptoms (standardized regression coefficients −0.29), but this effect was found to be reduced (mediated, to −0.26) by social inhibition. In total, 30% of the total variance could be explained by this model, and there was an excellent statistical fit.

Conclusions

The variables found to be significantly associated with depression were a younger age, as well as lower levels of intellectual skill, social inhibition and inversed emotional stability (neuroticism). It was found that a lack of emotional stability is, along with a younger age, the strongest predictor of depressive symptoms, but can be mediated by social inhibition.

Keywords:
Social inhibition; Mediator; Neuroticism; Elderly; Depression