, Volume 190, Issue 14, pp 2595–2621 | Cite as

Knowing whether A or B

  • Maria Aloni
  • Paul Égré
  • Tikitu de Jager
Open Access


The paper examines the logic and semantics of knowledge attributions of the form “s knows whether A or B”. We analyze these constructions in an epistemic logic with alternative questions, and propose an account of the context-sensitivity of the corresponding sentences and of their presuppositions.


Knowledge Alternative questions Contextualism Awareness Relevant alternatives Attention Presupposition Accommodation 



We thank E. Chemla, H. van Ditmarsch, F. Roelofsen, B. Spector, and P. Schlenker for critical comments and helpful suggestions, as well as two anonymous reviewers. We also thank W. van der Hoek for his editorial assistance. Part of the research reported here was financially supported by the Dutch Organization for Scientific Research (NWO).

Open Access

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.


  1. Aloni, M., Beaver, D., Clark, M., & van Rooij, R. (2007). The dynamics of topic and focus. In M. Aloni, A. Butler, & P. Dekker (Eds.), Questions in dynamic semantics, Vol. 17 of CRiSPI (pp. 123–145). Amsterdam: Elsevier.Google Scholar
  2. Aloni, M., & Égré, P. (2008). Alternative questions and knowledge attributions. The Philosophical Quarterly (forthcoming).Google Scholar
  3. Beaver D. (1997) Presupposition. In: van Benthem J., ter Meulen A.(eds) Handbook of logic and language. North Holland, AmsterdamGoogle Scholar
  4. Chemla, E. (2008). Similarity: Towards a unified account of scalar implicatures, free choice permission and presupposition projection. Semantics and Pragmatics (to appear).Google Scholar
  5. de Cornulier B. (1982) Sur le sens des questions totales et alternatives. Langages, 16(67): 55–109CrossRefGoogle Scholar
  6. Dretske F. I. (1970) Epistemic operators. The Journal of Philosophy 67(24): 1007–1023CrossRefGoogle Scholar
  7. Fagin R., Halpern J. Y. (1988) Belief, awareness and limited reasoning. Artificial Intelligence 34: 39–76CrossRefGoogle Scholar
  8. Groenendijk J., Stokhof M. (1982) Semantic analysis of Wh-complements. Linguistics and Philosophy 5(2): 175–233Google Scholar
  9. Groenendijk, J., & Stokhof, M. (1984). Studies in the semantics of questions and the pragmatics of answers. Ph.D. thesis, Universiteit van Amsterdam.Google Scholar
  10. Heim I. (1994) Interrogative semantics and Karttunen’s semantics for know. In: Buchalla R., Mittwoch A.(eds) Proceedings of IATL 1. Akademon, Jerusalem, pp 128–144Google Scholar
  11. Higginbotham, J. (1991). Either/or. In T. Sherer (Ed.), Proceedings of NELS 21 (pp. 143–155). Amherst, Ma: GLSA.Google Scholar
  12. Karttunen L. (1977) Syntax and semantics of questions. Linguistics and Philosophy 1: 3–44CrossRefGoogle Scholar
  13. Larson R. K. (1985) On the syntax of disjunction scope. Natural Language and Linguistic Theory 3: 217–264CrossRefGoogle Scholar
  14. Lewis D. K. (1979) Scorekeeping in a language game. Journal of Philosophical Logic 8: 339–359CrossRefGoogle Scholar
  15. Lewis, D. K. (1982). ‘Whether’ report. In T. Pauli (Ed.), Philosophical essays dedicated to Lennart Åqvist on his fiftieth birthday. Filosofiska Studier.Google Scholar
  16. Lewis D. K. (1996) Elusive knowledge. Australasian Journal of Philosophy 74(4): 549–567CrossRefGoogle Scholar
  17. Schaffer J. (2007) Knowing the answer. Philosophy and Phenomenological Research LXXV(2): 383–403CrossRefGoogle Scholar
  18. Stalnaker R. (1978) Assertion. In: Stalnaker R.(eds) Context and content. Oxford University Press, Oxford, pp 78–95Google Scholar
  19. Stanley J. (2005) Knowledge and practical interests. Oxford University Press, OxfordCrossRefGoogle Scholar
  20. von Fintel K. (1999) NPI-licensing, Strawson-entailment, and context-dependency. Journal of Semantics 16(2): 97–148CrossRefGoogle Scholar
  21. von Stechow A. (1991) Focusing and background operators. In: Abraham W.(eds) Discourse particles, Vol. 12 of Pragmatics and beyond. John Benjamins Publishing Company, Amsterdam, pp 37–84Google Scholar
  22. Zimmermann T. E. (2000) Free choice disjunction and epistemic possibility. Natural Language Semantics 8: 225–290CrossRefGoogle Scholar

Copyright information

© The Author(s) 2009

Authors and Affiliations

  1. 1.ILLCAmsterdamThe Netherlands
  2. 2.Institut Jean-Nicod (ENS/EHESS/CNRS), Départment d’Etudes Cognitives de l’ENSParisFrance

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