“…Also, Hong Kong government has issued a regulation (took effect on 23 July 2020) to impose compulsory mask wearing requirement in public places, and the maximum penalty for breaching requirements is a fine at level 3 (HK$10,000 or about US$1,400). Apart from penalties, the positive values of WTP for mask wearing can be perceived as a kind of social responsibility, for the protection of others ( Lee, 2021 ), which can also be related to collectivist culture. In future studies, as the experience with COVID-19 pandemic could in principle change the attitudes of the U.S. residents in the near future ( Xu and Cheng, 2021 ), it will be worthwhile repeating the survey in the U.S. several years down the road.…”