1. Department of Economics North Carolina State University Box 8110 Raleigh, NC 27695 robert_clark@ncsu.edu
2. University of Tokyo University of Malaya Asian Development Bank Institute Kasumigaseki Bldg. 8F, 3-2-5 Kasumigaseki Chiyoda-ku, Tokyo 100-6008 Japan nogawa1@adbi.org
3. Social Wellbeing Research Centre University of Malaya 50603 Kuala Lumpur Malaysia norma@um.edu.my
4. Center for Southeast Asian Studies Kyoto University 46 Shimoadachi-cho, Yoshida Sakyo-ku, Kyoto, 606-8501 Japan shigeyukiabe@cseas.kyoto-u.ac.jp
5. Department of Statistics 62514 Putrajaya Malaysia uzir@stats.gov.my