@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20171130-140418477, title = "Laboratory Research in Political Economy", chapter = "Testing game-theoretic models of free riding: New evidence on probability bias and learning", year = "1991", url = "https://resolver.caltech.edu/CaltechAUTHORS:20171130-140418477", id = "record", isbn = "0472102036" } @inbook{https://resolver.caltech.edu/CaltechAUTHORS:20140320-161654696, title = "Laboratory Research in Political Economy", chapter = "A Comparative Analysis of Direct Democracy, Two-Candidate Elections, and Three-Candidate Elections in an Experimental Environment", year = "1991", url = "https://resolver.caltech.edu/CaltechAUTHORS:20140320-161654696", id = "record", isbn = "9780472102037" }