← Search Journal of Political Economy Vol. 84 No. 4 1976 A Life-Cycle Model of Earnings, Learning, and Consumption James J. Heckman Volume84 Issue4 PagesS9-S44 Sources bibtex:phds-export.bib Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓