Nathanael Gratias SumaktoyoFormer Kellogg Doctoral Student Affiliate and Kellogg graduate research grant recipient Nathanael Gratias Sumaktoyo (PhD '18, poloitical science) is an assistant professor of political science at the National University of Singapore. He is working on a book project on social networks and religious tolerance in Muslim societies, as well as article-long projects on the effects of worship houses in a community on intergroup attitudes and psychological well-being.