עברית

Prof. Ruth Ben-Yashar

Telephone
972-3-5318569
Fax
972-3-7384034
Email
Ruth.Ben-Yashar@biu.ac.il
Office
308; Building : 504
Reception Hours
In advance by email
PO Box
40
Research Categories
Decision Making
CV

Education

B.A., Summa Cum Laude,  Bar-Ilan University,  Economics and Computer Science

Ph.D., Bar-Ilan University, Economics :  Organizational Quality and Optimality of the Decision Making Structure

Post-Doctoral,  Tel Aviv University, Department of Business Administration

Academic Affiliations

2000-2007:  Lecturer, Department of Economics, Bar-Ilan University,Israel

2007-        :  Senior Lecturer, Department of Economics, Bar-Ilan University,Israel

Visiting positions

2001-2002:  Interdisciplinary  Institute of Management, London School of Economics(LSE)

Editorial Activities

Reviewer for:

  •  Journal of Economic Theory.
  •  Public Choice.
  •  American Political Science Review.
  • Group Decision and Negotiation.
  • Journal of Politics.
  • Games and Economic Behavior.
  • Mathematical Social Sciences
  • Journal of Economic Behavior and Organization .
  • Southern Economic Journal .
  • International Journal of Manpower .
  • Social Choice and Welfare .
  • Economics of Governance .
  • European Journal of Political Economy .
  • Economic Theory .
  • Management Science .

Courses Taught

  • Undergraduate: B.A.

    • statistics I / II
    • Game Theory
    • Mathematics
    • Introduction to Micro-Economics
    • Introduction to Macro-Economics

  • Graduate: M.A. Ph.D.

    • Decision-Making
    • Social Choice

Awards /Honors

1987                :  B.A. studies distinction by Knesset Committee.                                

1994                :  Post-Doctoral   Fellowship, Council for  Higher Education,  Planning and Grants Committee

GRANT
2014             :  Financial support from the Research Institute for Econometrics, Bar-Ilan University. 

Presentations          

  • "Sovereign Debt Assistance and Democratic Decision Making"(online presented), 31st EBES Conference – Warsaw,2020. Best paper award.
  • "The Effect of Democratic Decision Making on Investment in Reputation"(poster presented), Economic and Business  ,2018.
  •  "Conditioning Sovereign Debt Relief on Democratization"(presented by S. Nitzan), Hitotsubashi Institute of Advanced Study, Hitotsubashi University, Tokyo, November 2018.
  •  "Conditioning Sovereign Debt Relief on Democratization"(presented by S. Nitzan), Institute of Social and Economic Research, Osaka University, Osaka, November 2018.
  •  "Conditioning Sovereign Debt Relief on Democratization"(presented by S. Nitzan),Department of Economics, Nanzan University, Nagoya, November 2018,.
  • "Conditioning Sovereign Debt Relief on Democratization"(presented by S. Nitzan),Department of Economics, Kobe University, Kobe, November 2018, .
  •  "Conditioning Sovereign Debt Relief on Democratization"(presented by S. Nitzan),Department of Economics, Niigata University, Niigata, November 2018,.
  • "Do Consistent Majority Judgments Guarantee the Truth?" (presented by S. Nitzan), Research Workshop of the Israel Science Foundation and the Research Institute for Econometrics at Bar-Ilan University, 2014.
  • "Optimal Preference Aggregation under Naive Probabilities" (presented by E. Baharad), The 29th  Israeli Economic Association  Conference, 2013.  
  • "On the Optimal Allocation of Committee Members", The 26th  Israeli Economic Association  Conference, 2010.
  • "The Condorcet Jury Theorem and Extension of the Franchise with Rationally Ignorant Voters"(presented by M. Zehavi), European Public Choice Society ,2009 .
  • "The Robustness of the Optimal Weighted Majority Rule to Probabilities Distortion", The 22th Israeli Economic Association  Conference, 2006.
  • "First and Second Best Voting Rules in Committees" , The Hebrew University of Jerusalem, the Faculty of Agricultural, Food & Environmental Quality Sciences, 2006.
  • "First and Second Best Voting Rules in Committees" , The 21th  Israeli Economic Association Conference, 2005.
  • "First and Second Best Voting Rules in Committees"(presented by I. Milchtaich), The 2004 Israeli Game Theory Conference at Tel Aviv, 2004.    
  • "Optimal Collective Dichotomous Choice Under Quota Constraints" , The 15th  Israeli Economic Association Conference, 1999.
  • "The Validity of the Nonasymptotic Part of Condorcet’s Jury Theorem", INFORMS Israel Meeting, Tel-Aviv University, 1998.
  • "The Validity of the Nonasympotic Part of Condorcet’s Jury Theorem" , European Public Choice Society, Goteborg University, Sweden, 1998. 
  • "Pre-Contractual Reliance"(Discussant), Intermediation and Contracts, Tel-Aviv University, 1997 .
  • "Investment Criteria in Single and Multi-Member Economic Organizations" , Tel-Aviv University, 1996.
  • "Investment in Human Capital Policy Within a Team of Decision Makers"(presented by J. Paroush), Forty-Second International Atlantic Economic Conference, Washington DC, USA, 1996. 
  • "Investment Criteria in Single- and Multi-Member Economic Organizations"(presented by S. Nitzan), European Economic Association, Turkey, 1996. 
  • "The Optimal Decision Rule for Fixed Size Committees in Dichotomous Choice Situations - The General Result" , The Fourth Israeli Conference on Judgement and Decision-Making, Ben-Gurion University, 1990.

   
 

 

Publications
  • " Should Defense Lawyers and Prosecutors be Appointed as Judges? ", Law Probability and Risk, forthcoming   (with M. Krausz). 
  • "Variable Competence and Collective Performance: Unanimity vs. Simple Majority Rule ", Group Decision and Negotiation, 2020, 29, 157-167  (with E. Baharad and S. Nitzan).
  • " On the Merit of Non-Specialization  in the Context of Majority Voting ", Journal of Mathematical Economics, 2020, 87, 128-133  (with E. Baharad and T. Patal).
  • " Skill, Value and Remuneration in Committees ", Economics Letters, 2019, 174, 93-95  (with   S. Nitzan).
  • " The Effect of Democratic Decision Making on Investment in Reputation ", Public Choice, 2018, 177(1), 155-164  (with M. Krausz and S. Nitzan).
  • " Government Loan Guarantees and the Credit Decision-Making Structure ", Canadian Journal of Economics, 2018, 51(2), 607-625  (with M. Krausz and S. Nitzan).
  • " Are Two Better than One? ", Public Choice, 2017, 171(3), 323-329  (with   S. Nitzan).
  • " Is Diversity in Capabilities Desirable when Adding Decision Makers? ", Theory and Decision, 2017, 82(3), 395-402  (with S. Nitzan).
  •  " The Unanimity Rule and Extremely Asymmetric Committees ", Journal of Mathematical Economics, 2016,  64, 107-112  (with L. Danziger).
  • " When is Voting Optimal? ", Economic  Theory Bulletin, 2015,  3, 341-356  (with L. Danziger).
  • " On the Optimal Composition of Committees ", Social Choice and Welfare, 2014,  43, 973-980  (with L. Danziger).
  • " The Generalized Homogeneity Assumption and the Condorcet Jury Theorem ", Theory and Decision, 2014, 77(2), 237-241.   
  • " On the Significance of the Prior of a Correct Decision in Committees ", Theory and Decision, 2014, 76(3), 317-327  (with S. Nitzan).
  • " Is Specialization Desirable in Committee Decision Making?", Theory and Decision, 2012, 72(3), 341-357  (with W. Koh and S. Nitzan).
  • " Symmetric and Asymmetric Committees ", Journal of Mathematical Economics, 2011,  47, 440-447  (with L. Danziger).
  • " The Condorcet Jury Theorem and Extension of the Franchise with Rationally     Ignorant Voters ", Public Choice, 2011, 148, 435-443  (with M. Zahavi).
  • " The Robustness of the Optimal Weighted Majority Rule to Probabilities    Distortion ", Public Choice, 2009, 139, 53-59  (with E. Baharad).
  • " First and Second Best Voting Rules in Committees ", Social Choice and   Welfare , 2007, 29(3), 453-486  (with I. Milchtaich).
  • " Comparison of Optimal Cutoff Points for Single and Multiple Tests in Personnel Selection ", Psicothema, 2006, 18, 652-660  (with S. Nitzan and H. Vos).
  • " Information is Important to Condorcet Jurors ", Public Choice, 2006, 127, 313-327.   
  • " Investment in Human Capital in Team Members who are Involved in Collective Decision Making  ", Journal of Public Economic Theory,  2003, 5(3), 527-539  (with J. Paroush).
  • " Optimal Collective Dichotomous Choice under Quota Constraints ", Economic Theory ,  2002, 19, 839-852  (with S. Kraus).
  • " Are Referees Sufficiently Informed about the Editor’s Practice?", Theory and    Decision, 2001, 51(1), 1-11  (with S. Nitzan).
  • " Optimal Collective Dichotomous Choice under Partial Order Constraints ", Mathematical Social Science ,  2001, 41, 349-364  (with S. Khuller and S. Kraus).
  • " Optimal Decision Rules for Fixed-Size Committees in Polychotomous Choice     Situations ", Social Choice and Welfare,  2001, 18, 737-746  (with J. Paroush).
  • " Investment Criteria in Single- and Multi-Member Economic Organizations ", Public Choice, 2001, 109, 1-13  (with S. Nitzan).
  • " The Invalidity of the Condorcet Jury Theorem under Endogenous Decisional Skills ", Economics of Governance, 2001, 2, 243-249  (with S. Nitzan).
  • " The Robustness of Optimal Organizational Architectures: A Note on Hierarchies and Polyarchies ", Social Choice and Welfare, 2001, 18(1), 155-163 (with S. Nitzan).
  • " A Nonasymptotic Condorcet Jury Theory ", Social Choice and Welfare, 2000, 17, 189-199 (with J. Paroush).
  • " Quality and Structure of Organizational Decision-Making ", Journal of Economic Behavior and Organization, 1998, 36, 521-534  (with S. Nitzan).
  • " The Admittance Criteria in Centralized and Decentralized Classification Systems ", The Economic Quarterly, 1997, 44 (3), 337-350  (with S. Nitzan).
  • "The Optimal Decision Rule for Fixed Size Committees in Dichotomous Choice Situations - The General Result ", International Economic Review, 1997, 38(1), 175-186  (with S. Nitzan).

 

 

Research

Collective Decision-Making.

Main Research Interests:

  • Collective Decision-Making.
  • Voting Rules.
  • Decisions by Juries.

Last Updated Date : 23/11/2022