Associate Editor, Review of Development Economics, 1999-present

Member of the Editorial Council, Journal of Environmental Economics and Management, 1996-1999, 2007-present

Member of the Editorial Council, Journal of Agricultural and Resource Economics, 2003-2007 Research Fellow, Rural Development

Research Consortium (RDRC), UC Berkeley, 2003-present

Fellow, Association of Pacific Rim Universities (APRV) 2000

Member of the European Union Research Network, Center for Economic Research (CentER), Tilburg University, Netherlands, 1995 - 2001

Member of American Economic Association (AEA)

Member of Royal Economic Society (RES)

Member of Association of Environmental and Resource Economics (AERE)

Member of European Association of Environmental and Resource Economics (EAERE)

Member of Association of Public Economic Theory (APET)

Member of Society for Economic Dynamics (SED)

Member of Society for Promotion of Economic Theory

Science Gold Medal, Tehran University, Iran, 1972