The Impact of Density Dependence, Sociopolitical Legitimation and Competitive Intensity on Self-Help/Mutual-Aid Formation
研究了1955-2000年间美国自助/互助健康运动组织的形成，发现社会政治合法性先促进后抑制组织成立，竞争强度也有影响，对理解组织生态和制度因素有参考价值。
Density-dependent and density-independent legitimation and competition are used to explain the evolution of self-help/mutual-aid (1955—2000), a long-lived population of health movement organizations. While previous research suggests the importance of both kinds of measures, this paper shows that better specification of density-independent sociopolitical legitimation and competitive intensity improves understanding of organizational and institutional factors affecting organizational formation. Sociopolitical legitimation, for instance, has a beneficial impact on self-help/mutual-aid formation, but later depresses founding rates because identity enclosure hinders new entries. Implications for further studies of identity, legitimation and competition are discussed.