大都市公共圏における社会関係資本の機能と階層性

──三大都市圏の「地縁」「職縁」と階級所属をめぐって──

抄録

　Drawing on the data obtained from a 2022 survey of residents in Japan’s three major metropolitan areas, this study aimed to examine the relationship between class affiliation and participation in social activities, especially in various collective actions, focusing on the mediating function of social capital. The results indicated that membership in a proprietary class does not directly increase the level of various activities but does so indirectly, mediated by the effects of increasing social capital, especially community-based and partly job-based social capital, through various channels. Suburban areas tend to have large amounts of community-based social capital, which increases the volume of conventional activities. Meanwhile, the high level of unconventional thematic-type activities in urban centers is offset by the low volume of community-based social capital, eliminating the differences caused by urbanity. Thus, in Japan’s megacities, the accumulation of community-based social capital has ambivalent effects that promote public and social activities while causing distortions due to class disparities.