This study examines the factors that influence the behavior of international tourists in Thailand from an economic perspective. The focus is on the tourists from 6 regions, covering 25 countries of origin as the highest number of international tourist arrivals to Thailand. A number of important economic factors, income, price, and exchange rate, are studied regarding international tourism demand in the short-run and long-run by using the panel data model of the Generalized Method of Moment (GMM) method. The results of tourism demand in the short-run ...