Nayyar P R
Leonard N. Stern School of Business, New York University.
Acad Manage J. 1993 Feb;36(1):28-57.
This study examined the performance effects of information asymmetry and economies of scope in diversified service firms. Tests using both accounting- and stock-market-based measures of performance revealed that information asymmetry improved performance more than economies of scope. As hypothesized, the benefits of information asymmetry were greater for firms offering services whose quality cannot be determined until after their purchase (experience services), and the benefits of economies of scope were greater for firms offering services whose quality can be determined prior to purchase (search services). However, without considering the interactive effects of service characteristics, economies of scope were negatively associated with performance for diversified service firms overall.
本研究考察了多元化服务公司中信息不对称和范围经济对绩效的影响。使用基于会计和股票市场的绩效衡量指标进行的测试表明，信息不对称对绩效的提升作用大于范围经济。正如所假设的那样，对于提供购买后才能确定质量的服务（体验服务）的公司，信息不对称的益处更大；而对于提供购买前就能确定质量的服务（搜索服务）的公司，范围经济的益处更大。然而，在不考虑服务特征的交互作用时，范围经济总体上与多元化服务公司的绩效呈负相关。
