The American Economic Association's registry for randomized controlled trials
First published corresponds to when the trial was first made public on the Registry after being reviewed.
Last updated is the most recent time when changes to the trial's registration were published.
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MD5: bcc3c60703c8a1f8aa16cd9e139033d1
SHA1: 57e20c9da41d21bf89c174f74673a7a84e2fa33e
Uploaded At: February 18, 2014
MD5: 591e45bf3c8daa0762ecaffdbb91f2b6
SHA1: 1515c2191c99b9149f4a31a42739e593609e6bf2