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Article de Guido Schwerdta, Dolores Messerb, Ludger Woessmannc et Stefan C. Wolter. Journal of Public Economics, vol. 96, n° 7-8, août 2012, pp. 569-583.Lifelong learning is often promoted in aging societies, but little is known about its returns or governments' ability to advance it. This paper evaluates the effects of a large-scale randomized field experiment issuing vouchers for adult education in Switzerland. We find no significant average effects of the voucher program on earnings, employment, and subsequent education 1 year after treatment. But effects are heterogeneous: low-educated individuals are most likely to profit from adult education, but least likely to use the voucher. In addition, the public voucher program appears to crowd out firm-financed training. The findings cast doubt on the effectiveness of untargeted voucher programs in promoting labor market outcomes through adult education.Accéder à l'article en ligne : http://dx.doi.org/10.1016/j.jpubeco.2012.03.001&#160;