“…First, we controlled for contract utilization because it is believed to constrain opportunism by increasing the marginal cost of guilty behavior (Crosno et al, 2021;Pang et al, 2023;Samaha et al, 2011). Second, we controlled for exporter age, size and ownership (1 ¼ state-owned and 0 ¼ otherwise), which may determine firms' decision-making (Boyd and Solarino, 2016;Gao et al, 2022;Wang et al, 2022;Yang et al, 2012). Third, as exchange characteristics may influence the efficacy of governance (Liu et al, 2009;Liu et al, 2023), we controlled for relational length, asset specificity, transaction frequency and relational norms (Heide, 1994;Liu et al, 2009;Poppo and Zenger, 2002;Williamson, 1985;Yang et al, 2012).…”