Modification of the Volunteer Functions Inventory for application in youth sports

The purpose of this study was to modify the Volunteer Functions Inventory (VFI) to be specifically applicable to assess volunteer motivation in youth sport settings. Based on a comprehensive review of literature, the VFI items were first modified to reflect the context of youth sports. Testing of measurement properties was accomplished through two studies. In Study One, the modified VFI was administered to volunteers (N = 515) of a nationwide youth soccer organization. Data were randomly split into two-halves: one for exploratory factor analysis (EFA) with principal-axis extraction and oblique rotation, and the other for confirmatory factor analysis (CFA) with maximum likelihood estimation. In the EFA, six factors emerged which were consistent with the dimensions of the VFI; however, 12 items were eliminated due to double loading or misspecification, resulting in 18 items being retained. The CFA revealed that the data fit the 6-factor model well. In Study Two, the resolved scale was re-validated through a sample of 262 volunteers of local youth sport leagues. Overall, findings of these two studies suggest that the modified VFI for youth sports is a valid and reliable scale. This scale may be adopted to study various volunteer motivation issues associated with youth sport organizations and events.