Ozekicioglu, HalilTopuz, HuseyinKazak, HasanKilic, CuneytAkcan, Ahmet Tayfur2025-05-292025-05-2920252071-1050https://doi.org/10.3390/su17020606https://hdl.handle.net/20.500.12428/30027This study examines whether OECD countries have converged over time in terms of export diversification. Focusing on the period 1995-2023, the study employs a new Fourier function-enhanced panel unit root test that takes into account gradual changes instead of sudden breaks. The findings show that more than half of OECD countries have not converged in terms of export diversification. Export diversification plays an important role in achieving economic growth and development as well as long-term sustainability goals. In this context, the study provides critical data for policymakers in support of sustainable development goals. The results point to the need to reassess the economic and environmental impacts of export diversification policies in OECD countries.eninfo:eu-repo/semantics/openAccessexport diversificationconvergencePANIC unit root testPANIC-Fourier unit root testOECDsustainable developmenttrade policyArticle17210.3390/su17020606Q2WOS:0014053477000012-s2.0-85215787545Q1