Summary
This paper discusses the ability of local currencies (LCs) to exchange goods and/or services by introducing a method to analyze the reciprocity of communities based on fuzzy network analysis. LCs are expected to revitalize social communities that face difficulties due to the attenuation of human relations. Therefore, such currencies have drastically spread all over the world to resolve these difficulties. LCs circulate in particular areas or communities and enhance social capitals. The significance of reciprocity in a community is usually referred to in light of the non-additivity of evaluation measures that reflect the non-additivity of relationships among community members and/or their activities. To analyze such reciprocity, we employ a fuzzy measure based on fuzzy network analysis that provides certain guidelines for the emergence of interpersonal relationalities among community members.