“…However, studies focused on countries grouped by institutional structure, income classification, and geographic region lend greater support for convergence in per capita carbon dioxide emissions (see Strazicich and List, 2003;Barassi et al 2008Barassi et al , 2011Barassi et al , 2018Chang, 2008, 2009;Romero-Avila, 2008;Jobert et al 2010;Herrerias, 2012; 3 While we focus our attention on per capita carbon dioxide emissions, a number of studies have investigated other types of emissions. In the case of sulfur dioxide and/or nitrogen oxide emissions, see List (1999), Lee and List (2004), Bulte et al (2007), Payne et al (2014, , Liu et al (2018), and Solarin and Tiwari (2020); greenhouse gas emissions, see El-Montasser et al (2015) and de Oliveira and Bourscheidt (2017); ecological footprint see Biligili and Ulucak (2018), Ulucak and Apergis (2018), Solarin (2019), Ulucak et al (2020), and Yilanci and Pata (2020); and for protected areas in the measurement of environmental quality, see Bimonte (2009). Yavuz and Yilanci, 2013;Solarin, 2014;Robalino-Lopez et al 2016;Presno et al, 2018;Erdogen and Acaravci, 2019;and Karakaya et al 2019).…”