Giné, Xavier; Karlan, Dean; Zinman, Jonathan - In: American Economic Journal: Applied Economics 2 (2010) 4, pp. 213-35
We designed and tested a voluntary commitment product to help smokers quit smoking. The product (CARES) offered smokers a savings account in which they deposit funds for six months, after which they take a urine test for nicotine and cotinine. If they pass, their money is returned; otherwise,...