TY - JOUR AU - Heckman,James J. TI - Lessons from the Technology of Skill Formation JF - National Bureau of Economic Research Working Paper Series VL - No. 11142 PY - 2005 Y2 - February 2005 UR - http://www.nber.org/papers/w11142 L1 - http://www.nber.org/papers/w11142.pdf N1 - Author contact info: James J. Heckman Department of Economics The University of Chicago 1126 E. 59th Street Chicago, IL 60637 Tel: 773/702-0634 Fax: 773/702-8490 E-Mail: jjh@uchicago.edu AB - This paper discusses recent advances in our understanding of differences in human abilities and skills, their sources, and their evolution over the lifecycle. ER -