Professor Quah is also Editor of the Singapore Economic Review and President of the Economic Society of Singapore. He has published widely in the fields of Cost-Benefit Analysis, Environmental Economics, and in Law and Economics . Contributing to more than a hundred publications inclusive of academic journals and lead opinion pieces in media, Professor Quah had also served as external reviewer for some economics schools in various universities in Asia and some of his works have been selected for inclusion by the International Library of Critical Writngs in Economics in UK as well as favourable reviews in such leading journals as Economic Journal, Journal of Economic Literature and the Journal of Labour Economics. His textbook with E.J Mishan, now in its 6th edition (Routledge UK 2020) is regarded as a classic text in this subject and used by many universities and governments. Formerly Vice Dean of the Faculty of Arts and Social Sciences at the National University of Singapore, and headed the economics departments at both Nanyang Technological University and the National University of Singapore, Professor Quah has been and continues to be advisor to many government ministries in Singapore. He is a recipient of the Public Administration Medal (Silver) in 2020