Details Author(s): John J. Donohue IIIJames Heckman Publish Date: 1993 Publication Title: Journal of Economic Literature Format: Journal Article Volume 29 Page(s) 1603 Citation(s): John J. Donohue III and James Heckman, Continuous Versus Episodic Change: The Impact of Civil Rights Policy on the Economic Status of Blacks, 29 Journal of Economic Literature 1603 (1993).