世界银行：集团咨询在十年后继续为企业带来益处：来自哥伦比亚汽车零部件企业的实证证据（英文版）

A randomized experiment tested the effectiveness of individual and small group–based consulting services on firms in the Colombian auto parts industry, finding improvements in management and firm performance over three to four years. This paper uses administrative data to track these firms for up to a decade. Firms in the group consulting intervention are more likely to survive, have higher employment, and have increased sales and profits by approximately 50 percent. This longer-term growth a