“…First, the "learning by exporting" theory claims that exporting to the international market boosts learning effects for firms, which results in increased productivity and competitiveness (Bernard & Wagner, 1997;Fernandes & Isgut, 2005;Kraay, 1999;Yousefi, Madanizadeh, & Sobhani, 2019). Some relevant studies that examine this hypothesis are Jensen (1999, 2004), who studied firms in the United States; Girma et al (2004), who researched firms in the United Kingdom; Wagner (2002), who studied German companies; Clerides et al (1998), who studied companies in Colombia, Morocco, and Mexico;and Aw, Chung, and Roberts (2000), who researched companies in Taiwan, and Wang, Xu, and Dai (2021), who examined the case of Chinese firms.…”