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The Dutch Comparative Scale for Assessing Volunteer Motivations among Volunteers and Non-Volunteers: An Adaptation of the Volunteer Functions Inventory

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Department of Epidemiology, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB Groningen, The Netherlands
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Netherlands Interdisciplinary Demographic Institute, PO Box 11650, 2502 AR The Hague, The Netherlands
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Department of Sociology, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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Department of Sociology, University of Groningen, Grote Rozenstraat 31, 9712 TG Groningen, The Netherlands
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Department of Health Psychology, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, AV 9713 Groningen, The Netherlands
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Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(24), 5047; https://doi.org/10.3390/ijerph16245047
Received: 13 November 2019 / Revised: 5 December 2019 / Accepted: 8 December 2019 / Published: 11 December 2019
Currently, no valid scales exist to compare volunteer motivations between volunteers and non-volunteers. We aimed to adapt the Dutch version of the Volunteer Functions Inventory (VFI) in order to make it applicable for the comparison of volunteer motivations between Dutch older volunteers and non-volunteers. The Dutch version of the VFI was included in the Lifelines ‘Daily Activities and Leisure Activities add on Study’, which was distributed among participants aged 60 to 80. Confirmatory factor analysis (CFA) models were estimated for volunteers and non-volunteers separately, and subsequently a CFA model was created based on all observations irrespective of volunteer status. Finally, group-based CFA models were estimated to assess measurement invariance. The resulting measurement instrument (6 factors, 18 items), containing both a volunteer version and a non-volunteer version, indicated an acceptable model fit for the separate and the combined CFA models (root mean square error of approximation (RMSEA) = 0.06, comparative fit index (CFI) = 0.95). Group-based models demonstrated strong invariance between the samples. The current study provides support for the validity of the Dutch Comparative Scale for Assessing Volunteer Motivations among Volunteers and Non-Volunteers, among Dutch older adults. View Full-Text
Keywords: volunteer motivations; Volunteer Functions Inventory; comparative scale; psychometric properties; measurement invariance; measurement instrument; older adults volunteer motivations; Volunteer Functions Inventory; comparative scale; psychometric properties; measurement invariance; measurement instrument; older adults
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Niebuur, J.; Liefbroer, A.C.; Steverink, N.; Smidt, N. The Dutch Comparative Scale for Assessing Volunteer Motivations among Volunteers and Non-Volunteers: An Adaptation of the Volunteer Functions Inventory. Int. J. Environ. Res. Public Health 2019, 16, 5047.

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