7. Conclusions and future directions
This study shows that customer and cost drivers influence internal and external green practices and, ultimately, environmental performance. Cost drivers have proven to have a significantly lower impact on the internal and external green practices of small firms than on those of large firms. This difference is marginally significant, even though it seems that customer drivers have a stronger impact on the internal and external green practices of small firms than on those of large firms. These findings extend our understanding of the theories and practices discussed in the GSCM literature.
Although this study makes significant contributions to GSCM literature and has important practical implications for companies, it still has several limitations. First, the survey is an international survey that can be generalized. However, the nature of the study may also introduce confounding effects across countries. Future studies may test our model in single countries and identify the potential country-specific factors that may influence the results. Second, this study uses a cross-sectional design to investigate the relationship between drivers, GSCM, and environmental performance.