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Comparing membership interest group networks across space and time, size, issue and industry*

Published online by Cambridge University Press:  12 February 2015

JANET M. BOX-STEFFENSMEIER
Affiliation:
Department of Political Science, The Ohio State University, 2140 Derby Hall, 154 N. Oval Mall, Columbus, OH 43210-1373, USA (e-mail: steffensmeier.2@osu.edu)
DINO P. CHRISTENSON
Affiliation:
Department of Political Science, Hariri Institute for Computing and Computational Science & Engineering, Boston University, 232 Bay State Road, Boston, MA 02215, USA (e-mail: dinopc@bu.edu)
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Abstract

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We compare and contrast the network formation of interest groups across industry and issue area. We focus on membership interest groups, which by virtue of representing the interests of voluntary members face particular organizational and maintenance constraints. To reveal their cooperative behavior we build a network dataset based on cosigner status to United States Supreme Court amicus curiae briefs and analyze it with exponential random graph models and multidimensional scaling. Our methodological approach culminates in a clear and compact spatial representation of network similarities and differences. We find that while many of the same factors shape membership networks, religious, labor, and political organizations do not share the same structure as each other or as the business, civic and professional groups.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2015