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Construct validity of a global scale for Workplace Social Capital based on COPSOQ III

Journal article
Authors H. Berthelsen
H. Westerlund
J. H. Pejtersen
Emina Hadzibajramovic
Published in PLoS ONE
Volume 14
Issue 8
ISSN 1932-6203
Publication year 2019
Published at Institute of Medicine, Department of Public Health and Community Medicine, Health Metrics
Language en
Keywords rasch model, 2nd version, work, health, justice, trust, trustworthiness, questionnaire, risk
Subject categories Health Sciences


Background and aim Workplace Social Capital has been suggested as a useful concept when addressing organizational and social factors of the work environment. The overall aim of the present study is to establish and evaluate the construct validity of a measure of Workplace Social Capital based on the operationalization suggested in the third version of the Copenhagen Psychosocial questionnaire. The present study is based on data collected as part of a validation and development project for the use of the Swedish version of COPSOQ at workplaces and includes responses from 1316 human service workers answering a workplace survey. Six items from scales for organizational justice, vertical trust and horizontal trust in COPSOQ III were included in the analyses. Rasch Analysis was used for scale validation. The analyses showed that the psychometric properties of the suggested COPSOQ scale for Workplace Social Capital were satisfactory after accommodation for local dependency. Each individual item worked as intended, the scale was unidimensional and functioned invariantly for women and men, and for younger and older employees. The scale was furthermore found to be valid for use for distinguishing groups, not individuals. We have established that the scale for Workplace Social Capital measured by COPSOQ III is valid for distinguishing groups, e.g. work teams. The scale exhibits good construct validity as it satisfies the measurement criteria defined by the Rasch model.

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