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		| Carmelo  Rodríguez-Álvarez | 
	
	
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		| ''On single-peakedness and strategy-proofness: ties between adjacent alternatives'' | 
	
	
		| ( 2017, Vol. 37 No.3 ) | 
	
	
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		| We  extend the classical characterizations of social choice rules that satisfy strategy-proofness  in the 
single-peaked domain of preferences by   Moulin (Public Choice, 1980)  and Barberà, Gul, and Stacchetti (Journal of Economic Theory, 1993)   to multivalued social choice rules that admit either the selection of  single alternatives or the selection  of  pairs of  adjacent alternatives. | 
	
	
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		| Keywords: Strategy-Proofness,  Single-Peaked Preferences,  Preferences over Sets of Alternatives,  Minimally Extended  Social Choice Functions | 
	
	
		JEL: D7 - Analysis of Collective Decision-Making: General
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		| Manuscript Received : Mar 13 2017 |   | Manuscript Accepted : Aug 31 2017 |  
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