See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/252476309 A Defense of Propensity Interpretations of Fitness1 Article · January 1992 DOI: 10.2307/192767 CITATIONS 12 READS 48 2 authors: Robert Richardson University of Cincinnati 50 PUBLICATIONS 1,125 CITATIONS SEE PROFILE Richard Burian Virginia Polytechnic Institute and State Univ… 114 PUBLICATIONS 1,838 CITATIONS SEE PROFILE All content following this page was uploaded by Richard Burian on 24 December 2016. The user has requested enhancement of the downloaded file.