Article history: Received 19 May 2009 Available online 2 February 2011 JEL classification: C78

Article history: Accepted 14 January 2011 JEL classification: D43 J29 J69 L60

Article history: Received 17 July 2008 Available online 27 January 2009 JEL classification: C71

This note provides a behavioral characterization of mutually absolutely continuous multiple priors. JEL classification: D81

Article history: Received 12 December 2007 Available online 24 December 2008 JEL classification: J33 M52 C93

Article history: Received 19 February 2007 Available online 30 October 2009 JEL classification: C78 D70 D78

Article history: Received 14 September 2010 Available online 22 August 2013 JEL classification: D86

96 words Text (including References, Tables and Appendices): 13,216 words JEL classifications: I12, I31, I20, I18

We analyze a substitutes ins respective sub expected leve attainments in confirms both JEL Classific

Article history: Received 26 May 2009 Available online 29 July 2010 JEL classification: C72