Prof. John Wilkerson published article in the American Journal of Political Science, "Tracing the Flow of Policy Ideas in Legislatures: A Text Reuse Approach"

Tracing the Flow of Policy Ideas in Legislatures: A Text Reuse Approach
John Wilkerson (University of Washington), David Smith (Northeastern University), and Nicholas Stramp (University of Washington)

 This article proposes a new approach to investigating the substance of lawmaking. Only a very small proportion of bills become law in the U.S. Congress. However, the bills that do become law often serve as vehicles for language originating in other bills. We investigate “text reuse” methods as a means for tracing the progress of policy ideas in legislation. We then show how a focus on policy ideas leads to new insights into the lawmaking process. Although our focus is on relating content found within bills, the same methods can be used to study policy substance across many research domains.

Wilkerson, J., Smith, D. and Stramp, N. (2015), Tracing the Flow of Policy Ideas in Legislatures: A Text Reuse Approach. American Journal of Political Science, 59: 943–956. doi: 10.1111/ajps.12175