{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T14:13:17Z","timestamp":1791814397303,"version":"4.3.4"},"reference-count":0,"publisher":"JSTOR","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Econometrica"],"published-print":{"date-parts":[[1979,1]]},"DOI":"10.2307\/1912352","type":"journal-article","created":{"date-parts":[[2006,7,5]],"date-time":"2006-07-05T17:09:10Z","timestamp":1152119350000},"page":"153","source":"Crossref","is-referenced-by-count":20639,"title":["Sample Selection Bias as a Specification Error"],"prefix":"10.2307","volume":"47","author":[{"given":"James J.","family":"Heckman","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1121","container-title":["Econometrica"],"original-title":[],"deposited":{"date-parts":[[2018,5,8]],"date-time":"2018-05-08T16:00:12Z","timestamp":1525795212000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.jstor.org\/stable\/1912352?origin=crossref"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1979,1]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1979,1]]}},"URL":"https:\/\/doi.org\/10.2307\/1912352","relation":{},"ISSN":["0012-9682"],"issn-type":[{"value":"0012-9682","type":"print"}],"subject":[],"published":{"date-parts":[[1979,1]]}}}