Kane et al. [30] reported that perception of improvement
in social status and having a valuable social role can be factors
contributing to improved VHV performance. However,
performance and social capital are interactive because
VHV activities are a public role which can be interpreted
as citizenship activities. It was considered that VHV performance
also had effect on citizenship activities. In the
case of self-evaluation by the VHVs, “support from groups”
and “cognitive social capital” were found to be related to
performance. The question about “support from groups”
asks whether the VHV receives support from various formal
groups. In brief, the result that “support from groups”