Survey researches of networking processes by environmental volunteer-groups.

本研究的目的是为了弄清环保志愿者团体的网络化过程，并了解其功能。主要结果如下：为了调查居民对严格区分可回收物和不可回收物的新回收制度的评价变化，进行了首次调查研究。研究结果表明，居民通过信息暴露对新制度的社会效益做出了积极的评价，通过行为承诺对新制度的个人成本做出了积极的评价。第二个调查研究旨在阐明环境志愿者团体对居民回收态度和行为的信息和规范影响。主要结果如下。个人媒介，如与志愿者团体的人际接触，影响居民的回收行为。大众传媒只影响他们对回收和环境问题的看法。第三次调查以参与环保运动的志愿者为对象，阐明他们对环保运动的承诺的促进因素。结果表明，群体认同和主观规范对志愿者努力意愿有显著影响。对社交网络的分析表明，朋友之间对环境问题的关注增加了志愿者对运动的承诺。我们的调查澄清，环境志愿者团体的网络是居民回收行为和志愿者承诺的主要决定因素。

The purpose of this study was to clarify networking processes by environmental volunteer groups and to understand their functions.Main results were as follows.We conducted the first survey research for investigating how residents change their evaluation of a new collection system of strict separation between recylable and non-recyclable materials. Main results were that residents had evaluated the social benefits of the new system positively through informational exposure, and then evaluated the personal costs of the system positively through their behavioral commitment.The second survey researh was done for clarifying informational and normative influences of environmental volunteer groups on residents' recycling attitudes and behaviors. Main results were as follows. Personal media, such as interpersonal contacts with volunteer groups, influenced residents' recycling behaviors. Mass media only influenced their beliefs about recycling and environmental problems.The third survey focused on volunteer members who participated in the environmental movement and clarified promoting factors of their commitment to the movement. The results indicate that group identification and subjective norm had a significant effects on volunteers' willingness to exert efforts. An analysis of social network revealed that concern for environmental issues among friends increased volunteers' commitment to the movement.Our surveys clarified that networkings by environmental volunteer group are main determinants of both of residents' recycling behaviors and volunteers' commitment.