Peter Chai is a Research Associate in the Faculty of Political Science and Economics at Waseda University. His research areas are political sociology, comparative politics, and public opinion. His research methodology is survey analysis, and his regional focus is East Asia. His research uses transnational survey databases such as the World Values Survey and Asian Barometer to investigate how citizen values and attitudes such as attitude to gender equality, concern for environmental protection, and sentiment toward immigrants change over time and relate to socio-demographic indicators such as age, education, income, and urbanization.