Exploring Diverse Sources of Linguistic Influence on International Tourism Flows
基于引力模型，构建包含母语、官方语言和语言接近度的综合语言指数，发现语言联系（包括非官方语言和少数群体语言）显著促进国际旅游流，且该指数优于传统官方语言虚拟变量。
This study uses a gravity framework to explore the impact of diverse sources of linguistic influence on international tourism flows. The diverse sources of linguistic influence are captured using a common language index derived from a common native language, a common official language, and linguistic proximity. Our results reveal that linguistic factors as captured by common language index promote international tourism flows. The positive impact of linguistic ties on tourism flows is not only observed in the country-pairs that share an official language, it is also found in pairs that share unofficial native languages, that contain minority groups united by a common language, or that use closely related languages—all features captured by the language index. The analysis demonstrates that an index of common language is methodologically superior to other measures of linguistic similarity, including the dummy variable for a common official language that currently dominates the international tourism literature.