One widely cited study was conducted in the late 1980 's by three economists -- David M. Cutler and Lawrence H. Summers of Harvard -LRB- Mr. Summers is now Harvard 's president -RRB- and James M. Poterba of the Massachusetts Institute of Technology .
James M. Poterba /business/person/company Massachusetts Institute of Technology
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James M. Poterba
PERSON
Massachusetts Institute of Technology
ORGANIZATION
/business/person/company