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  1. The Description–Experience Gap in Risky and Ambiguous Gambles.Varun Dutt, Horacio Arlo-Costa, Jeffrey Helzner & Cleotilde Gonzalez - 2014 - Journal of Behavioral Decision Making 27 (4):316-327.
  2. Ambiguity Aversion: The Explanatory Power of Indeterminate Probabilities.Horacio Arló-Costa & Jeffrey Helzner - 2010 - Synthese 172 (1):37-55.
    Daniel Ellsberg presented in Ellsberg (The Quarterly Journal of Economics 75:643–669, 1961) various examples questioning the thesis that decision making under uncertainty can be reduced to decision making under risk. These examples constitute one of the main challenges to the received view on the foundations of decision theory offered by Leonard Savage in Savage (1972). Craig Fox and Amos Tversky have, nevertheless, offered an indirect defense of Savage. They provided in Fox and Tversky (1995) an explanation of Ellsberg’s two-color problem (...)
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  3. Uncertainty in the Context of Pragmatist Philosophy and Rational Choice Theory.Jeffrey Helzner - manuscript
  4.  93
    Transfer Principles in Nonstandard Intuitionistic Arithmetic.Jeremy Avigad & Jeffrey Helzner - 2002 - Archive for Mathematical Logic 41 (6):581-602.
    Using a slight generalization, due to Palmgren, of sheaf semantics, we present a term-model construction that assigns a model to any first-order intuitionistic theory. A modification of this construction then assigns a nonstandard model to any theory of arithmetic, enabling us to reproduce conservation results of Moerdijk and Palmgren for nonstandard Heyting arithmetic. Internalizing the construction allows us to strengthen these results with additional transfer rules; we then show that even trivial transfer axioms or minor strengthenings of these rules destroy (...)
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  5. Admissibility in a Logical Framework.Jeffrey Helzner - manuscript
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  6. On the Application of Multiattribute Utility Theory to Models of Choice.Jeffrey Helzner - 2009 - Theory and Decision 66 (4):301-315.
    Ellsberg (The Quarterly Journal of Economics 75, 643–669 (1961); Risk, Ambiguity and Decision, Garland Publishing (2001)) argued that uncertainty is not reducible to risk. At the center of Ellsberg’s argument lies a thought experiment that has come to be known as the three-color example. It has been observed that a significant number of sophisticated decision makers violate the requirements of subjective expected utility theory when they are confronted with Ellsberg’s three-color example. More generally, such decision makers are in conflict with (...)
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  7.  94
    Rationalizing Two-Tiered Choice Functions Through Conditional Choice.Jeffrey Helzner - 2013 - Synthese 190 (6):929-951.
    Set-valued choice functions provide a framework that is general enough to encompass a wide variety of theories that are significant to the study of rationality but, at the same time, offer enough structure to articulate consistency conditions that can be used to characterize some of the theories within this encompassed variety. Nonetheless, two-tiered choice functions, such as those advocated by Isaac Levi, are not easily characterized within the framework of set-valued choice functions. The present work proposes conditional choice functions as (...)
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  8.  18
    On the Explanatory Power of Indeterminate Probabilities.Jeffrey Helzner & Horacio Arlo-Costa - unknown
    Building on work that we reported at ISIPTA 2005 we revisit claims made by Fox and Tversky concerning their "comparative ignorance" hypothesis for decision making under uncertainty.
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  9. Agency and Interaction What We Are and What We Do in Formal Epistemology.Jeffrey Helzner & Vincent Hendricks - 2010 - Journal of the Indian Council of Philosophical Research 27 (2).
    Formal epistemology is the study of crucial concepts in general or main- stream epistemology including knowledge, belief , certainty, ra- tionality, reasoning, decision, justi cation, learning, agent interaction and information processing using a spread of di¤erent formal tools. These formal tools may be drawn from elds such as logic, probability theory, game theory, decision theory, formal learning theory, and distributed com- puting –such variety is typical in formal epistemology, a eld in which interaction with topics outside of philosophy proper is (...)
     
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  10. Iterated Random Selection as Intermediate Between Risk and Uncertainty.Horacio Arlo Costa & Jeffrey Helzner - 2009 - ISIPTA'09 ELECTRONIC PROCEEDINGS.
  11.  32
    Iterated Random Selection as Intermediate Between Risk and Uncertainty.Horacio Arlo-Costa & Jeffrey Helzner - unknown
    In (Hertwig et al. , 2003) Hertwig et al. draw a distinction between decisions from experience and decisions from description. In a decision from experience an agent does not have a summary description of the possible outcomes or their likelihoods. A career choice, deciding whether to back up a computer hard drive, cross a busy street, etc., are typical examples of decisions from experience. In such decisions agents can rely only of their encounters with the corresponding prospects. By contrast, an (...)
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  12.  87
    On the Representation of Error.Jeffrey Helzner - 2012 - Synthese 186 (2):601-613.
    Though he maintained a significant interest in theoretical aspects of measurement, Henry E. Kyburg, Jr. was critical of the representational theory that in many ways has come to dominate discussions concerning the foundations of measurement. In particular, Kyburg (in Savage and Ehrlich (eds) Philosophical and foundational issues in measurement theory, 1992 ) asserts that the representational theory of measurement, as introduced in (Scott and Suppes, Journal of Symbolic Logic, 23:113–128, 1958 ) and developed in (Krantz et al., Foundations of measurment: (...)
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  13.  74
    Epistemology and Economics.Jeffrey Helzner - 2013 - Synthese 190 (5):781-786.
  14.  64
    More Foundations of the Decision Sciences: Introduction.Horacio Arló Costa & Jeffrey Helzner - 2012 - Synthese 187 (1):1-10.
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  15.  19
    Obituary: Horacio Arló-Costa.Rohit Parikh & Jeffrey Helzner - 2012 - Episteme 9 (2):89-89.
    Editorial Rohit Parikh, Jeffrey Helzner, Episteme, FirstView Article.
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  16.  62
    Expected Content.Jeffrey Helzner - 2008 - Review of Symbolic Logic 1 (4):424-432.
    We propose an approach to assigning propositional content to deliberate acts of arbitrary type, as opposed to just speech acts. This approach, which is based on the idea that the content of an act is the decision maker's expectation concerning the change that would take place if the act were to be performed, is shown to be related to the concept of expected utility that has played a central role in various accounts of rationality.
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  17.  54
    Introduction.Horacio Arló-Costa & Jeffrey Helzner - 2010 - Synthese 172 (1):1-6.
    Daniel Ellsberg presented in Ellsberg various examples questioning the thesis that decision making under uncertainty can be reduced to decision making under risk. These examples constitute one of the main challenges to the received view on the foundations of decision theory offered by Leonard Savage in Savage. Craig Fox and Amos Tversky have, nevertheless, offered an indirect defense of Savage. They provided in Fox and Tversky an explanation of Ellsberg’s two-color problem in terms of a psychological effect: ambiguity aversion. The (...)
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  18.  48
    Vincent F. Hendricks and Pelle G. Hansen, Game Theory: 5 Questions.Jeffrey Helzner - 2008 - Studia Logica 89 (1):149-150.
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  19.  29
    Comparative Ignorance and the Ellsberg Phenomenon.Horacio Arlo-Costa & Jeffrey Helzner - unknown
    The "Ellsberg phenomenon" has played a significant role in research on imprecise probabilities. Fox and Tversky [5] have attempted to explain this phenomenon in terms of their "comparative ignorance" hypothesis. We challenge that explanation and present empirical work suggesting an explanation that is much closer to Ellsberg's own diagnosis.
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  20.  8
    Combining Probability and Logic: Papers From Progic 2011.Jeffrey Helzner - 2013 - Journal of Applied Logic 11 (4):363.
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  21. Consider the System.Jeffrey Helzner - 2008 - In Vincent Hendricks (ed.), New Waves in Epistemology. Palgrave-Macmillan. pp. 251.
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