Dr. Ruth Ben-Yashar

Dr.
Dr. Ruth Ben-Yashar
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Research interests: 
Decision Making

CV

 

Education

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

PH. D. Dissertation

Thesis:

Organizational Quality and Optimality of the Decision Making Structure.

 

Academic Affiliations

2000- : Lecturer, Department of Economics, Bar-Ilan University.

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

 

Editorial Activities

Reviewer for:

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 .

 

Honors

1987 : Honary mention for distinction in B.A. studies by Knesset Committee.
1994 : Post-Doctoral Fellowship, Council for Higher Education, Planning and Grants Committee.
2001 : Invited to publishing program of Nova Science Publishers Inc., New York, USA .
2003 : Invited to publishing program of Nova Science Publishers Inc., New York, USA .
 

 

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.
 
 

 

 
 
 

 

Publications

 

1. "The Optimal Decision Rule for Fixed Size Committees in Dichotomous Choice Situations - The General Result," International Economic Review, 38(1), 1997, 175-186 (12 ) (with S. Nitzan).
2. "The Decision Criterion: A Decentralized System vs. a Centralized System," The Economic Quarterly, 44(3), 1997, 337-350 (14) (with S. Nitzan) (in Hebrew).
3. "Quality and Structure of Organizational Decision-Making," Journal of Economic Behavior and Organization, 36, 1998, 521-534 (14) (with S. Nitzan).
4. "A Nonasymptotic Condorcet Jury Theory", Social Choice and Welfare, 17, 2000, 189-199 (11) (with J. Paroush).
5. "The Robustness of Optimal Organizational Architectures: A Note on Hierarchies and Polyarchies" Social Choice and Welfare, 18, 2001, 155-163 (9) (with S. Nitzan).
6. "The Invalidity of the Condorcet Jury Theorem under Endogenous Decisional Skills", Economics of Governance, 2, 2001, 243-249 (7) (with S. Nitzan).
7. "Investment Criteria in Single- and Multi-Member Economic Organizations", Public Choice, 109, 2001, 1-13 (13) (with S. Nitzan).
8. "Optimal Decision Rules for Fixed-Size Committees in Polychotomous Choice Situations", Social Choice and Welfare, 18, 2001, 737-746 (10) (with J. Paroush).
9. "Optimal Collective Dichotomous Choice under Partial Order Constraints", Mathematical Social Science, 41, 2001, 349-364 (16) (with S. Kraus and S. Khuller).
10. "Are Referees Sufficiently Informed About the Editor's Practice?", Theory and Decision, 51(1), 2001, 1-11 (11) (with S. Nitzan).
11. "Optimal Collective Dichotomous Choice Under Quota Constraints", Economic Theory, 19, 2002, 839-852 (14) (with S. Kraus).
12. "Investment in Human Capital In Team Members Who Are Involved in Collective Decision Making" Journal of Public Economic Theory, 5(3), 2003, 527-539 (13) (with J. Paroush).
13. "Information is Important to Condorcet Jurors", Public Choice, 127, 2006, 305-319 (15).
14. "Comparison of Optimal Cutoff Points for Single and Multiple Tests in Personnel Selection", Psicothema, 18, 2006, 652-660 (9) (with S. Nitzan and H. Vos).
15. "First and Second Best Voting Rules in Committees", Social Choice and Welfare, 29,2007,453-486 (34) (with I. Milchtaich).
 

16. "The Robustness of the Optimal Weighted Majority Rule to Probabilities Distortion", Public Choice , 139, 2009, 53-59 (7) (with E. Baharad).

 

Papers under Revision
 

1. "Is Specialization Desirable in Committee Decision Making?", (with W. Koh and S. Nitzan) (under revision in Public Choice).

 

Papers Submitted for Publication
1. "Is Specialization Desirable in Committee Decision Making?" (with W. Koh and S. Nitzan) .
2. "On the Optimal Allocation of Committee Members" (with Leif Danziger).
 

3. "The Condorcet Jury Theorem and Extension of the Franchise with Rationally Ignorant Voters" (with Mor Zahavi).

 

Papers in Progress
1. Government Intervention in Credit Allocation: a Collective Decision Making Model (with Miriam Krausz).
2. The Optimal Decision Rule for Fixed Size Committees under Subjective Decision Probabilities (with Eyal Baharad).
3. A Note on the Optimal Qualified Weighted Majority Rules.
 

4. The Optimal Assignment of Decision Makers to Decision Groups (with Leif Danziger).

 

Presentations in Seminars and Scientific Conferences
1. "The Condorcet Jury Theorem and Extension of the Franchise with Rationally Ignorant Voters", European Public Choice Society ,2009 (presented by M. Zehavi).
2. "The Robustness of the Optimal Weighted Majority Rule to Probabilities Distortion" (with E. Baharad), The Israel Economic Association 22th Conference, 2006.
3. "First and Second Best Voting Rules in Committees" (with I. Milchtaich), The Hebrew University of Jerusalem, the Faculty of Agricultural, Food & Environmental Quality Sciences, 2006.
4. "First and Second Best Voting Rules in Committees" (with I. Milchtaich), The Israel Economic Association 21th Conference, 2005.
5. "First and Second Best Voting Rules in Committees", The 2004 Israeli Game Theory Conference at Tel Aviv, 2004 (presented by I. Milchtaich).
6. "Optimal Collective Dichotomous Choice Under Quota Constraints" (with S. Kraus), The Israel Economic Association 15th Conference, 1999.
7. "The Validity of the Nonasymptotic Part of Condorcet's Jury Theorem" (with J. Paroush), INFORMS Israel Meeting, Tel-Aviv University, 1998.
8. "The Validity of the Nonasympotic Part of Condorcet's Jury Theorem" (with J. Paroush), European Public Choice Society, Goteborg University, Sweden, 1998.
9. "Pre-Contractual Reliance", (Discussant). Intermediation and Contracts, Tel-Aviv University, 1997.
10. "Investment Criteria in Single and Multi-Member Economic Organizations" (with S. Nitzan), Tel-Aviv University, 1996.
11. "Investment in Human Capital Policy Within a Team of Decision Makers", Forty-Second International Atlantic Economic Conference, Washington DC, USA, 1996 (presented by J. Paroush).
12. "Investment Criteria in Single- and Multi-Member Economic Organizations," European Economic Association, Turkey, 1996 (presented by S. Nitzan).
13. "The Optimal Decision Rule for Fixed Size Committees in Dichotomous Choice Situations - The General Result" (with S. Nitzan), The Fourth Israeli Conference on Judgement and Decision-Making, Beer-Sheva University, 1990.

 

Research

Main Research Interests:

 

Collective Decision-Making.

Voting Rules.

Decisions by Juries.