短语词组短语social loafing detail 社会性懈怠Social loafing effect 效应perceived social loafing 当员工知觉社会赋闲social loafing scale 所发展之社会赋闲量表social loafing theory 社会惰化formation model of social loafing 社会惰性形成过程 返回 social loafing