“…As Chen and Chiou-Wei [13] state, the causal relationship between tourism and economic growth is not stable, and there might not be a unique relationship type among GCC countries. In this sense, Eugenio-Martin, Morales, and Scarpa [40], Chang, Khamkaev, and McAleer [41], Leitão [26], Tavares and Leitão [27], Chou [37], and Tugcu [39] in their empirical investigation argued that, depending on different dynamics, such as economic and political structures, trade openness, initial tourism conditions, investment rate, sectorial linkages, and historical background of the countries, this relationship may vary. Therefore, different studies could show different results in these countries in the context of tourism-led growth, even for the same sample.…”