DARON ACEMOGLU Massachusetts Institute of Technology, USAPHILIPPE AGHION Harvard University, USAGADI BARLEVY Federal Reserve Bank of Chicago, USAPAUL BEAUDRY The University of British Columbia, CanadaW.A.BROCK University of Wisconsin, Madison, USA GAVIN CAMERON Deceased. Oxford University, UKFRANCESCO CASELLI London School of Economics, UKGREGORY CLARK University of California Davis, USADIEGO COMIN Harvard Business School, USAW.D.DECHERT University of Houston, USAMATTHIAS DOEPKE Northwestern University, USASTEVE DOWRICK Australian National University, AustraliaSTEVEN N. DURLAUF University of Wisconsin Madison, USARICHARD A. EASTERLIN University of California, Los Angeles, USAWILLIAM EASTERLY New York University, USAODED GALOR Brown University, USAF HAHN Retired, University of Cambridge, UKARNOLD HEERTJE University of Amsterdam, The NetherlandsPETER HOWITT Brown University, USAYANNIS M IOANNIDES Tufts University, USASRIYA IYER University of Cambridge, UKPAUL A. JOHNSON Vassar College, USADIANE J. MACUNOVICH University of Redlands, USARODLOFO E. MANUELLI University of Wisconsin Madison, USAKIMINORI MATSUYAMA Northwestern University, USAS METCALFE University of Cambridge, UKJOEL MOKYR Northwestern University, USAVINCENZO QUADRINI University of Southern California, USAJAMES RAUCH University of California San Diego, USAPETER L. ROUSSEAU Vanderbilt University, USAJONATHAN TEMPLE University of Bristol, UKANTHONY J. VENABLES University of Oxford, UKDAVID N. WEIL Brown University, USA