Theory and Decision

, Volume 79, Issue 4, pp 601–613 | Cite as

Sub-models for interactive unawareness

  • Simon Grant
  • J. Jude Kline
  • Patrick O’Callaghan
  • John Quiggin


We propose a notion of a sub-model for each agent at each state in the Heifetz et al. (2006) model of interactive unawareness. Presuming that each agent is fully cognizant of his sub-model causes no difficulty and fully describes his knowledge and his beliefs about the knowledge and awareness of others. We use sub-models to motivate the HMS conditions on possibility correspondences.


Interactive unawareness Sub-models Events 



We thank Spyros Galanis, Aviad Heifetz, Sander Heinsalu, and Burkhard Schipper for very constructive comments.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Simon Grant
    • 1
    • 2
  • J. Jude Kline
    • 2
  • Patrick O’Callaghan
    • 2
  • John Quiggin
    • 2
  1. 1.Research School of EconomicsAustralian National UniversityCanberraAustralia
  2. 2.School of EconomicsUniversity of QueenslandBrisbaneAustralia

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