The effect of ISO 14001 on environmental performance: Resolving equivocal findings

- ISO 14001's effectiveness at reducing pollution varies across countries.
- ISO 14001's effectiveness at reducing pollution varies across environmental impact.
- Standard instrumentation approaches to address endogeneity may not be sufficient.
- ISO 14001 may be more effective when there are clear cost-saving opportunities.
- ISO 14001 may be more effective at reducing indirectly regulated impacts.