Firm, strategic group, and industry influences on performance
使用分层线性模型，同时估计企业、战略群组和行业三个层次对短期和长期绩效的影响，发现企业效应最强，战略群组效应在某些指标上超过行业效应。
Abstract A long‐standing debate has focused on the extent to which different levels of analysis shape firm performance. The strategic group level has been largely excluded from this inquiry, despite evidence that group membership matters. In this study, we use hierarchical linear modeling to simultaneously estimate firm‐, strategic group‐, and industry‐level influences on short‐term and long‐term measures of performance. We assess the three levels' explanatory power using a sample of 1,165 firms in 12 industries with data from a 7‐year period. To enhance comparability to previous research, we also estimate the effects using the variance components and ANOVA methods relied on in past studies. To assess the robustness of strategic group effects, we examine both deductively and inductively defined groups. We found that all three levels are significantly associated with performance. The firm effect is the strongest, while the strategic group effect rivals and for some measures outweighs the industry effect. We also found that the levels have varying effects in relation to different performance measures, suggesting more complex relationships than depicted in previous studies. Copyright © 2007 John Wiley & Sons, Ltd.