The Homepage of John Duggan

	Bio		Teaching		Research		Contact Information		Links

Recent Updates

August 20, 2009:   "The Case for Responsible Parties,"with Dan Bernhardt and Francesco Squintani, American Political Science Review, forthcoming.
August 18, 2009:   "A Newton Collocation Method for Solving Dynamic Bargaining Games," with Tasos Kalandrakis, Social Choice and Welfare, forthcoming.
July 22, 2009:   "Voting Equilibria in Multicandidate Elections," with Yoji Sekiya, Journal of Public Economic Theory, forthcoming.
July 1, 2009:   "A Spatial Theory of Media Slant and Voter Choice," with Cesar Martinelli
July 1, 2009:   "Biography of Jeffrey S. Banks"
June 11, 2009:   "Private Polling in Elections and Voter Welfare," with Dan Bernhardt and Francesco Squintani, Journal of Economic Theory, 144: 2021--2056, available online.
May 22, 2009:   Lecture slides from Formal Models in Political Science, Spring 2009
May 12, 2009:   "Dynamic Legislative Policy Making" (2009) with Tasos Kalandrakis

• Mathematical Modelling in Political Science
  This course is the first half of the first-year formal theory sequence required of Ph.D. students in political science at Rochester. Here is an early syllabus, when the class was primarily a math class. Here is a later syllabus after adding more modeling. This course is now split between mathematics and modeling, as a recent syllabus attests. Check Mark Fey's syllabus for the second course in the sequence.
• Introduction to Positive Political Theory
  This course is the second half of the first-year formal theory sequence required of Ph.D. students in political science at Rochester. Here is a syllabus from one of the times I taught this course. Check Mark Fey's syllabus for this course in its current form.
• Political Economy 1
  This course is offered to advanced Ph.D. students in political science and economics and is the first half of the political economy sequence offered through the Wallis Institute. Here is an early syllabus, a more recent syllabus, and the current syllabus.
• Dynamic and Computational Modeling
  Tasos Kalandrakis and I co-taught this course. Here is the syllabus.
• Topics in Positive Political Theory
  Here is the syllabus for the first time I taught this course, and here is the syllabus for the second time.

Caltech

• Political Theory
  This course is the first quarter in the political theory sequence required of Ph.D. students at Caltech, where I visited in 2002--03. Here is the syllabus.
• Foundations of Political Economy
  This course is offered to advanced Ph.D. students at Caltech, where I visited in 2002-03. Here is the syllabus from the first time I taught this course, and here is the syllabus from the second time.

Queen's

• Topics in Mathematical Economics
  Here is the syllabus from the first time I taught this course, when I covered social choice theory, and here is the syllabus from the second time, when I covered implementation theory.

Undergraduate

Rochester

• Introduction to Game Theory
  Here is the syllabus from the first time I taught undergraduate game theory, and here is a later syllabus.
• Formal Models in Political Science (formerly Intro to Positive Political Theory)
  Here is the syllabus from the first time I taught undergraduate formal theory, and here is the most recent syllabus.
• Intermediate Microeconomics

Queen's

• Intermediate Microeconomics
• Topics in Microeconomic Theory
  Here is the syllabus from the first time I taught this course, when I covered social choice theory, and here is the syllabus from the second time, when I covered general equilibrium theory.

Lecture Notes

• Formal Models in Political Science
  Here are lecture slides from the course I taught in Spring, 2009. Lots of pictures.

Publications in Refereed Journals

• "The Case for Responsible Parties" (2009) with Dan Bernhardt and Francesco Squintani, American Political Science Review, forthcoming.
• "A Newton Collocation Method for Solving Dynamic Bargaining Games" (2009) with Tasos Kalandrakis, Social Choice and Welfare, forthcoming.
• "Voting Equilibria in Multicandidate Elections" (2009) with Yoji Sekiya, Journal of Public Economic Theory, forthcoming.
• "Private Polling in Elections and Voter Welfare" (2009) with Dan Bernhardt and Francesco Squintani, Journal of Economic Theory, 144: 2021--2056.
• "Bargaining Foundations of the Median Voter Theorem" (2009) with Seok-ju Cho, Journal of Economic Theory, 144: 851--868.
  Slides from a short seminar. Slides from a longer presentation at the Wallis conference. Detailed slides.
• "A Dynamic Model of Democratic Elections in Multidimensional Policy Spaces" (2008) with Jeff Banks, Quarterly Journal of Political Science, 3: 269--299.
• "Dynamics of the Presidential Veto: A Computational Analysis" (2008) with Tasos Kalandrakis and Vikram Manjunath, Mathematical and Computer Modelling, 48: 1570--1589.
• "Equilibrium Existence for Zero-sum Games and Spatial Models of Elections" (2007) Games and Economic Behavior, 60: 52--74.
• "Electoral Competition with Privately Informed Candidates" (2007) with Dan Bernhardt and Francesco Squintani, Games and Economic Behavior, 58: 1--29.
  For a more general, somewhat less readable version of the paper, click here. Here are some slides from a talk.
• "A Systematic Procedure for the Construction of Non-empty Choice Sets" (2007) Social Choice and Welfare, 28: 491--506.
• "Endogenous Voting Agendas" (2006) Social Choice and Welfare, 27: 495--530.
• "Repeated Downsian Electoral Competition" (2006) with Mark Fey, International Journal of Game Theory, 35: 39--69.
• "A Social Choice Lemma on Voting Over Lotteries" (2006) with Jeff Banks, Social Choice and Welfare, 26: 285--304.
• "A Note on Uniqueness of Electoral Equilibrium When the Median Voter Is Unobserved" (2006) Economics Letters, 92: 240--244.
• "A General Bargaining Model of Legislative Policy-making" (2006) with Jeff Banks, Quarterly Journal of Political Science, 1: 49--85.
• "Social Choice and Electoral Competition in the General Spatial Model" (2006) with Jeff Banks and Michel Le Breton, Journal of Economic Theory, 126: 194--234.
• "Electoral Competition with Policy-Motivated Candidates" (2005) with Mark Fey, Games and Economic Behavior, 51: 490--522.
  Here are some slides from a talk.
• "Uniqueness of Stationary Equilibria in a One-dimensional Model of Bargaining" (2003) with Seok-ju Cho, Journal of Economic Theory, 113: 118--130.
• "Nash Implementation with a Private Good" (2002) Economic Theory, 21: 117--131.
• "Implementing the Efficient Allocation of Pollution" (2002) with Joanne Roberts, American Economic Review, 92: 1070--1078.
• "Bounds for Mixed Strategy Equilibria and the Spatial Model of Elections" (2002) with Jeff Banks and Michel Le Breton, Journal of Economic Theory, 103: 88--105.
• "A Bayesian Model of Voting in Juries" (2001) with Cesar Martinelli, Games and Economic Behavior, 37: 259--294.
• "Mixed Refinements of Shapley's Saddles and Weak Tournaments" (2001) with Michel Le Breton, Social Choice and Welfare, 8: 65--78.
• "Repeated Elections with Asymmetric Information" (2000) Economics and Politics, 12: 109--136.
  Here are some slides from a talk.
• "A Bargaining Model of Collective Choice" (2000) with Jeff Banks, American Political Science Review, 94: 73--88.
• "Strategic Manipulability without Resoluteness or Shared Beliefs: Gibbard-Satterthwaite Generalized" (2000) with Tom Schwartz, Social Choice and Welfare, 17: 85--93.
• "A General Extension Theorem for Binary Relations" (1999) Journal of Economic Theory, 86: 1--16.
• "An Implementation-theoretic Approach to Non-cooperative Foundations" (1999) with Jim Bergin, Journal of Economic Theory, 86: 50--76.
• "An Extensive Form Solution to the Adverse Selection Problem in Principal/ Multi-agent Environments" (1998) Review of Economic Design, 3: 167--191.
• "Virtual Bayesian Implementation" (1997) Econometrica, 65: 1175--1199.
  Here are some slides from a talk.
• "Hansson's Theorem for Generalized Social Welfare Functions: An Extension" (1997) Social Choice and Welfare, 14: 471--478.
• "Dutta's Minimal Covering Set and Shapley's Saddles" (1996) with Michel Le Breton, Journal of Economic Theory, 70: 257--265.
• "Arrow's Theorem in Public Good Environments with Convex Production Technologies" (1996) Journal of Economic Theory, 68: 303--318.
• "A Geometric Proof of Gibbard's Random Dictatorship Theorem" (1996) Economic Theory, 7: 365--369.
• "Functional Voting Operators: The Non-monotonic Case" (1993) with Fuad Aleskerov, Mathematical Social Sciences, 26: 175--201.

*Much of this material is based upon work supported by the National Science Foundation under Grant No. 9975173 and Grant No. 0213738. See individual papers for specific acknowledgements.

Book Chapter

• "Probabilistic Voting in the Spatial Model of Elections: The Theory of Office-Motivated Candidates" (2006) in Social Choice and Strategic Decisions: Essays in Honor of Jeffrey S. Banks, David Austen-Smith and John Duggan, eds., New York: Springer-Verlag.
  Here is Maggie Penn's review of the edited volume.

Unpublished Papers

• "A Bargaining Model of Collective Choice" (1999) with Jeff Banks.
  This paper has been published (American Political Science Review, 2000, 94:73-88), but the unpublished version contains an appendix showing that our assumption of "limited shared weak preference" is satisfied in a variety of economic environments.
• "Coalitional Bargaining Equilibria" (2008) (not available yet) .
  Here are some slides from a talk.
• "Collective Choice in Linear Environments and Applications to Bargaining and Social Choice" (2006).
• "Dominance-based Solutions for Strategic Form Games" (1998) with Michel Le Breton.
  Here are some slides from a talk.
• "Dynamic Legislative Policy Making" (2009) with Tasos Kalandrakis.
  Here are slides from a talk that mainly focussed on existence and properties of equilibrium, and here are some slides from a talk specifically on our core convergence result.
• "Dynamic Political Agency" (2009) with Marcus Berliant (not available yet).
  Here are some slides from a talk by Marcus.
• "Electoral and Policy Dynamics in US Politics" (2009) with Tasos Kalandrakis (not available yet).
  Here are some slides from a talk.
• "Equilibrium Equivalence Under Expected Plurality and Probability of Winning Maximization" (2000).
  Incomplete: one section missing.
• "Equilibrium Non-existence in a Model of Representative Democracy" (2001) with Arantxa Jarque-Llamazares.
• "Existence of Equilibria on Convex Sets" (2004) with Jeff Banks.
• "Generic Expansiveness of the Majority Top Cycle" (2008) (not available yet).
  Here are some slides from a talk.
• "Implementing the Efficient Allocation of Pollution" (1999) with Joanne Roberts.
  This paper has been published (American Economic Review, 2002, 92:1070-1078), but the unpublished version contains a section on implementation under incomplete information.
• "Mixed Refinements of Shapley's Saddles and Weak Tournaments" (1999) with Michel Le Breton.
  This paper has been published (Social Choice and Welfare, 2001, 8:65-78), but the unpublished version contains a more comprehensive analysis of solutions of weak tournaments and an appendix with several additional examples.
• "Mixed Strategy Equilibrium and Deep Covering in Multidimensional Electoral Competition" (2006) with Matt Jackson.
  Here are slides from a talk.
• "Non-cooperative Games Among Groups" (2001).
• "Robust Implementation" (2001) with Joanne Roberts.
• "A Spatial Theory of Media Slant and Voter Choice" (2009) with Cesar Martinelli.
• "A Survey of Equilibrium Analysis in Spatial Models of Elections" (2005).
• "Uncovered Sets" (2006) (not available yet).

Miscellany

• "Acceptance Speech for 2006 Social Choice and Welfare Prize"
  I thought it would be appropriate to post these comments for posterity. My wife and two-year old daughter were present for the ceremony; my daughter lost her patience and started crying right at the end of the speech. Perfect timing.
• "Biography of Jeffrey S. Banks" (2009)
  This is a short biography of Jeff Banks with proper citations of his work.
• "Dynamic Social Choice" (2006)
  Slides from a plenary lecture at the 2006 Meetings of the Society for Social Choice and Welfare. This talk is based on joint work with Tasos Kalandrakis.
• "Formal Political Theory" (2006)
  Slides from a graduate recruiting seminar.
• "How to Maximize Probability of Success in Political Science: Some Tips'' (2005)
  A seminar for graduate students.
• "Lemmas on Minimal (Positively) Dependent Sets" (2008)
• "A Note on Backward Induction, Iterative Elimination of Weakly Dominated Strategies, and Voting in Binary Agendas" (2003)
• "A Note on Harsanyi's Social Aggregation Theorem" (2006)
• "A Note on Lebesgue's Dominated Convergence Theorem for Multi-Indexed Sequences of Functions" (2007)
• "A Note on Sensitivity Analysis for Local Solutions of Non-Linear Programs" (2007) with Tasos Kalandrakis
• "A Note on Strict Lower Hemi-Continuity of Mixed Constraint Correspondences" (2007) with Tasos Kalandrakis
  We realized after the fact that there is a much easier way to get this result, but the argument might be of some interest.
• "Pseudo-rationalizability and Tournament Solutions" (1997)
• "A Slight Twist on Glicksberg's Theorem" (2002)

Theoretical Foundations of Political Economy

• Front matter
• Chapter 1: Relations, Preference, and Choice
• Chapter 2: Social Choice Theory
• Chapter 3: Implementation Theory (not available yet)

• U of R homepage
• Wallis Institute of Political Economy
• U of R Political Science
• U of R Economics
• my department web page