Industry, corporate, and segment effects and business performance: a non‐parametric approach
用非参数方法重新分析企业绩效数据，发现公司因素对业务利润的预测能力比行业因素高一个数量级以上，且行业因素不显著，绩效关系随时间变化。
Abstract The literature investigating the degree to which firm performance is associated with industry or corporate factors has recently been subject to criticism on the grounds of both methodological shortcomings and incomplete interpretation of results. Our research goes beyond these critiques to raise more basic issues concerning the assumptions underlying variance decomposition, the methodology dominating the antecedent literature. Performance data and categorizations from a sample consistent with those employed in the recent literature are analyzed via a new non‐parametric methodology. Results here indicate that corporate factors were over an order of magnitude better predictors of business unit profit position than were industry factors—which were found not to have been significant predictors. Further, underlying performance relationships were seen to have shifted over time. A key implication of these results for researchers is that they provide additional evidence that managers can have a strategic influence on business performance. Copyright © 2003 John Wiley & Sons, Ltd.