Returns to Scale in the Property and Liability Insurance Industry
研究了财产与责任保险业是否存在规模报酬，采用覆盖行业90%以上保费的大样本、四种营销系统分类和公司集团关系识别，发现存在规模报酬，与以往研究结论不同。
Important public policy implications derive from the question of whether or not there are returns to scale in the property-liability insurance industry. This study employs methodological and data management techniques designed to explore the question more reliably. These are the use of a large sample capturing over 90 percent of industry premiums, the classification of insurers according to four marketing systems rather than two, and the acknowledgement of corporate relationship among insurers in the form of groups. Findings are at variance with those of prior studies in indicating the existence of returns to scale.