While Six Sigma is increasingly implemented in industry, little academic research has been done on Six Sigma and its influence on quality management theory and application. There is a criticism that Six Sigma simply puts traditional quality management practices in a new package. To investigate this issue and the role of Six Sigma in quality management, this study reviewed both the traditional quality management and Six Sigma literatures and identified three new practices that are critical for implementing Six Sigma's concept and method in an organization. These practices are referred to as: Six Sigma role structure, Six Sigma structured improvement procedure, and Six Sigma focus on metrics. A research model and survey instrument were developed to investigate how these Six Sigma practices integrate with seven traditional quality management practices to affect quality performance and business performance. Test results based on a sample of 226 US manufacturing plants revealed that the three Six Sigma practices are distinct practices from traditional quality management practices, and that they complement the traditional quality management practices in improving performance. The implications of the findings for researchers and practitioners are discussed and further research directions are offered. #

This paper explores the ability of ®rms to integrate a critical strategic issue, the natural environment, into the strategic planning process within the natural resource-based perspective. Using survey data collected from a wide variety of ®rms and industries based in the United States, we empirically examined the antecedents and eects of integrating the natural environment into the formal planning process. These data were analysed using structural equation modelling with the LISREL technique.Overall, our data provided strong support for the hypothesized relationships. Speci®cally, we found that the level of integration of environmental management concerns in the strategic planning process was positively related to ®nancial and environmental performance. Furthermore, we found that the greater the functional coverage and the more resources provided to environmental issues, the greater the integration of environmental issues in the planning process. These results suggest that concern for environmental issues may yield competitive advantages in the marketplace as the natural resource-based perspective suggests.

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The authors studied panel data for corporate governance ratings in 50 countries between 1997 and 2005 to understand what the country-level predictors of corporate governance legitimacy might be. Using neo-institutional theory, they found that all three pillars of institutionalization influenced perceptions of corporate governance at the national level—specifically, (a) the greater the extent of law and order, (b) the more the culture emphasized global competitiveness, and (c) the less the prevalence of corruption, the higher the corporate governance legitimacy within a nation. This study refines and extends the comparative corporate governance literature, as well as the neo-institutional perspective.

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