Research

0000-0001-7129-5991

• Editorial board
  • Frontiers in Psychology: Theoretical and Philosophical Psychology (Associate Editor)
  • Journal of Applied Logic (Area Scientific Editor: Human Reasoning)
  • Semantics and Pragmatics (Editorial Board)
  • The Reasoner (Editorial Board)
  
  
  
• Publications
  • Journals
    
  • Full Papers in Books / Conference Proceedings
    
  • Edited Books / Journal Issues
    
  • Reviews / Reports / Handbook Entries / Abstracts
    
  • Technical Reports (unpublished)
    
  • Habilitation, PhDs, and Master's Theses
    
    
• Presentations
  • Talks
    
  • Posters
  • Videos
  • Interviews
    
    
    
    
    

Written work

to appear

• Gilio, A., Over, D. E., Pfeifer, N. & Sanfilippo, G. (to appear). On trivalent logics, probabilistic weak deduction theorems, and a general import-export principle. Artificial Intelligence 337.   Online First:
  
  
• Pfeifer, N. & Sanfilippo, G. (to appear). Probability propagation rules for Aristotelian syllogisms. Annals of Pure and Applied Logic 175(9).   Online First:
  
  

Journals (Peer-reviewed)

1. Pfeifer, N. & Schmid, R. (2025). Störring and Lindworsky: two pioneers in the psychology of deductive reasoning. History of Psychology 28(2), 143-169.   Preprint:
   
   
2. Pfeifer, N. & Sanfilippo (2024). Connexive logic, probabilistic default reasoning, and compound conditionals. Studia Logica 112, 167-206.  
   
   
3. Pfeifer, N. (2023). Towards a conceptual framework for conspiracy theory theories. Social Epistemology 37(4), 510-521.   Preprint:
   
   
4. Pfeifer, N. & Fermüller, C. G. (2023). Probabilistic interpretations of argumentative attacks: logical and experimental results. Argument & Computation (14)1, 75-107.
   
   
5. Pfeifer, N. & Neger, T. (2022). Steigerung der Vortragskompetenzen von Studierenden durch systematisches Peer-Feedback: Konzept, Umsetzung und Evaluation. (Increasing presentation competencies of students through systematic Peer feedback: concept, implementation, and evaluation.) Die Hochschullehre. Interdisziplinäre Zeitschrift für Studium und Lehre, Jahrgang 8/2022.  
   
   
6. Sanfilippo, G., Gilio, A., Over, D. E., & Pfeifer, N. (2020). Probabilities of conditionals and previsions of iterated conditionals. International Journal of Approximate Reasoning, 121, 150-173.  
   
   
7. Kleiter, G. D., Fugard, A. J. B., & Pfeifer, N. (2018). A process model of the understanding of uncertain conditionals. Thinking & Reasoning, 24(3), 386-422.  
   
   
8. Sanfilippo, G., Pfeifer, N., Over, D. E., & Gilio, A. (2018). Probabilistic inferences from conjoined to iterated conditionals. International Journal of Approximate Reasoning, 93, 103-118.    
   
   
9. Pfeifer, N. & Sanfilippo, G. (2017). Probabilistic squares and hexagons of opposition under coherence. International Journal of Approximate Reasoning, 88, 282-294.    
   
   
10. Pfeifer, N. & Tulkki, L. (2017). Conditionals, counterfactuals, and rational reasoning. An experimental study on basic principles. Minds and Machines, 27(1), 119-165.    
    
    
11. Gilio, A., Pfeifer, N. & Sanfilippo, G. (2016). Transitivity in coherence-based probability logic. Journal of Applied Logic, 14, 46-64.       View author presentation video.
    
    This paper was listed among the most cited articles published in the Journal of Applied Logic since 2013 (retrieved on April 19, 2018).
    
    
12. Pfeifer, N. (2016). Experimental probabilistic pragmatics beyond Bayes' theorem. Zeitschrift für Sprachwissenschaft, 35(1), 89-96.    
    
    
13. Pfeifer, N. (2014). Reasoning about uncertain conditionals. Studia Logica, 102(4), 849-866.    
    
    
14. Pfeifer, N. (2014). Editor's note: Special issue on combining probability and logic to solve philosophical problems. Journal of Applied Logic, 12(3), 233-234.  
    
    
15. Pfeifer, N. & Douven, I. (2014). Formal epistemology and the new paradigm psychology of reasoning. The Review of Philosophy and Psychology, 5(2), 199-221.    
    
    
16. Pfeifer, N. (2013). The new psychology of reasoning: A mental probability logical perspective. Thinking & Reasoning, 19(3-4), 329-345.    
    
    
17. Pfeifer, N. (2012). Experiments on Aristotle's Thesis: Towards an experimental philosophy of conditionals. The Monist, 95(2), 223-240.    
    The abstract is published in The Review of Metaphysics, 2012, 65(4), p. 938.
    
    
18. Fugard, A. J. B., Pfeifer, N. & Mayerhofer, B. (2011). Probabilistic theories of reasoning need pragmatics too: Modulating relevance in uncertain conditionals. Journal of Pragmatics, 43, 2034-2042.    
    
    
19. Fugard, A. J. B., Pfeifer, N., Mayerhofer, B. & Kleiter, G. D. (2011). How people interpret conditionals: Shifts towards the conditional event. Journal of Experimental Psychology: Learning, Memory, and Cognition, 37(3), 635-648.    
    
    
20. Hauer, K. & Pfeifer, N. (2011). Reporting on historical severe storms: Two examples of Utrecht (1674) and Abtenau (1796). Atmospheric Research, 100(4), 580-585.    
    
    
21. Pfeifer, N. (2011). Systematic rationality norms provide research roadmaps and clarity. Commentary on Elqayam & Evans: Subtracting "ought" from "is": Descriptivism versus normativism in the study of human thinking. Behavioral and Brain Sciences, 34(5), 263-264.    
    
    
22. Pfeifer, N. & Kleiter, G. D. (2009). Framing human inference by coherence based probability logic. Journal of Applied Logic, 7(2), 206-217.      
    
    This paper was listed among the most cited articles published in the Journal of Applied Logic since 2009 (retrieved on November 3, 2014).
    
    
23. Pfeifer, N. & Kleiter, G. D. (2009). Mental probability logic. Commentary on Oaksford & Chater: Bayesian Rationality. The Probabilistic Approach to human reasoning. Oxford University Press. Behavioral and Brain Sciences, 32(1), 98-99.      
    
    
24. Pfeifer, N. & Kleiter, G. D. (2006). Inference in conditional probability logic. Kybernetika, 42, 391-404.      
    
    
25. Pfeifer, N. & Kleiter, G. D. (2005). Towards a mental probability logic. Psychologica Belgica, 45(1), 71-99.     (updated version)  
    
    
26. Pfeifer, N. & Kleiter, G. D. (2005). Coherence and nonmonotonicity in human reasoning, Synthese, 146(1-2), 93-109.      
    
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    Full Papers in Books / Conference Proceedings

27. Pfeifer, N. & Schöppl, K. (2025). Experimental philosophy of connexivity. In Wansing H. & Omori, H. (Eds.). 60 Years of Connexive Logic (p. 201-223). Cham: Springer (Trends in Logic).   Preprint:
    
    
28. Gilio, A. Over, D. E., Pfeifer, N., & Sanfilippo, G. (2024). On independence, compound, and iterated conditionals. 2nd International conference Human and Artificial Rationalities (HAR 2023), Lecture Notes in Computer Science (p. 159-177). Cham: Springer.
    
    
29. Pfeifer, N. (2023). The logic and pragmatics of conditionals under uncertainty: a mental probability logic perspective. In Kaufmann, S., Over, D. E., & Sharma, G. (Eds.). Conditionals. Logic, Linguistics and Psychology (p. 73-102). London: Palgrave Macmillan (Palgrave Studies in Pragmatics, Language and Cognition). doi:10.1007/978-3-031-05682-6_4
    
    
30. Pfeifer, N. (2022). Die Zähmung des Zufalls: Ein Streifzug durch die Geschichte der Philosophie. In Papathanasiou, K. (Ed.). Zufall. Rechtliche, philosophische und theologische Aspekte (p. 60-76). Berlin: Duncker & Humbolt. doi.  
    
    
31. Pfeifer, N. (2021). Probability logic. In Knauff, M. & Spohn, W. (Eds.), Handbook of Rationality (p. 277-284). Cambridge: MIT Press.   Open access link   .
    
    
32. Pfeifer, N. & Sanfilippo, G. (2021). Interpreting connexive principles in coherence-based probability logic. In Vejnarová, J. & Wilson, J. (Eds.). Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2021) (p. 672-687). Cham: Springer (ECSQARU 2021, LNAI 12897). doi.  
    
    
33. Gilio, A., Pfeifer, N., & Sanfilippo, G. (2020). Probabilistic entailment and iterated conditionals. In Elqayam, S., Douven, I., Evans, J. St. B. T., & Cruz, N. (Eds.). Logic and uncertainty in the human mind: a tribute to David E. Over (p. 71-101). London: Routledge.  
    
    
34. Pfeifer, N., & Capotorti, A. (2020). What society can and cannot learn from coherence: theoretical and practical considerations. In Yama, H. & Salvano-Pardieu, V. (Eds.). Adapting Human Thinking and Moral Reasoning in Contemporary Society (p. 176-198). Hershey, PA: IGI Global.   Preview.
    
    
35. Pfeifer, N., & Sanfilippo, G. (2019). Probability propagation in selected Aristotelian syllogisms. In Kern-Isberner, G. & Ognajović, Z. (Eds.). Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2019) (p. 419-431). Cham: Springer (Lecture Notes in Computer Science, vol. 11726).  
    
    
36. Pfeifer, N. (2018). Building bridges between the world and claims about it: Commentary on Lumer's paper "Strength of justification. The rational degree of certainty approach". In Oswald, S. & Maillat, D. (Eds.). Argumentation and inference: Proceedings of the 2nd European Conference on Argumentation, Fribourg 2017 (p. 335-340). Studies in Logic and Argumentation. London: College Publications.  
    
    
37. Pfeifer, N. & Fermüller, C. G. (2018). Probabilistic interpretations of argumentative attacks: logical and experimental foundations. In Kratochvíl, V. & Vejnarová, J. (Eds.). 11th Workshop on Uncertainty Processing (WUPES'18) (p. 141-152). Prague: MatfyzPress Publishing House  
    
    
38. Pfeifer, N. & Sanfilippo, G. (2018). Probabilistic semantics for categorical syllogisms of Figure II. In Ciucci, D., Pasi, G., & Vantaggi, B. (Eds.). Scalable Uncertainty Management (p. 196-211). Cham: Springer (Lecture Notes in Artificial Intelligence)  
    
    
39. Pfeifer, N. & Tulkki, L. (2017). Abductive, causal, and counterfactual conditionals under incomplete probabilistic knowledge. In Gunzelmann, G., Howes, A., Tenbrink, T., &, Davelaar, E. (Eds.). Proceedings of the 39th Cognitive Science Society Meeting (p. 2888-2893).  
    
    
40. Pfeifer, N. & Pankka, H. (2017). Modeling the Ellsberg paradox by argument strength. In Gunzelmann, G., Howes, A., Tenbrink, T., &, Davelaar, E. (Eds.). Proceedings of the 39th Cognitive Science Society Meeting (p. 925-930).  
    
    
41. Pfeifer, N. & Yama, H. (2017). Counterfactuals, indicative conditionals, and negation under uncertainty: Are there cross-cultural differences? In Gunzelmann, G., Howes, A., Tenbrink, T., &, Davelaar, E. (Eds.). Proceedings of the 39th Cognitive Science Society Meeting (p. 2882-2887).  
    
    
42. Sanfilippo, G., Pfeifer, N., & Gilio, A. (2017). Generalized probabilistic modus ponens. In Antonucci, A., Cholvy L., & Papini, O. (Eds.). Symbolic and Quantitative Approaches to Reasoning with Uncertainty (p. 480-490). Cham: Springer (Lecture Notes in Artificial Intelligence, vol. 10369).  
    
    
43. Pfeifer, N. (2017). Cognition and natural disasters: Stimulating an environmental historical debate. In Vaz, E., Joanaz de Melo, C., & Costa Pinto, L. M. (Eds.). Environmental History in the Making (p. 3-15). Dordrecht: Springer.  
    
    
44. Gilio, A., Over, D. E., Pfeifer, N., & Sanfilippo, G. (2017). Centering and compound conditionals under coherence. In Ferraro, M. B., Giordani, P., Vantaggi, B., Gagolewski, M., Gil, M. Á., Grzegorzewski, P. & Hryniewicz, O. (Eds.). Soft Methods for Data Science (p. 253-260). Dordrecht: Springer (Advances in Intelligent Systems and Computing).  
    
    
45. Pfeifer, N. & Sanfilippo, G. (2017). Square of opposition under coherence. In Ferraro, M. B., Giordani, P., Vantaggi, B., Gagolewski, M., Gil, M. Á., Grzegorzewski, P. & Hryniewicz, O. (Eds.). Soft Methods for Data Science (p. 407-414). Dordrecht: Springer (Advances in Intelligent Systems and Computing).  
    
    
46. Pfeifer, N. (2016). The new psychology of reasoning: A mental probability logical perspective. In Elqayam, S., Bonnefon J.-F. & Over, D. E. (Eds.). New Paradigm Psychology of Reasoning. Basic and applied perspectives (p. 84-101). London: Routledge. (This is a reprint of Pfeifer, N. (2013). Thinking & Reasoning, 19(3-4), 329-345.)    
    
    
47. Gilio, A., Pfeifer, N., & Sanfilippo, G. (2015). Transitive reasoning with imprecise probabilities. In Destercke, S. & Denoeux, T. (Eds.), Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2015) (p. 95-105). Dordrecht: Springer LNAI 9161 (Lecture Notes in Artificial Intelligence).
    
    
48. Pfeifer, N. & Stöckle-Schobel, R. (2015). Uncertain conditionals and counterfactuals in (non-)causal settings. In Airenti, G., Bara, B. G. & Sandini G. (Eds.), Proceedings of the EuroAsianPacific Joint Conference on Cognitive Science (4th European Conference on Cognitive Science; 10th International Conference on Cognitive Science) (p. 651-656). CEUR Workshop Proceedings, Vol. 1419.  
    
    
49. Pfeifer, N. (2013). On argument strength. In F. Zenker (Ed.), Bayesian argumentation. The practical side of probability (p. 185-193). Dordrecht: Synthese Library Vol. 362 (Springer).  
    
    
50. Pfeifer, N. & Pfeifer, K. (2013). Forces of nature and cultural responses: An introduction. In K. Pfeifer & N. Pfeifer (Eds.), Forces of nature and cultural responses (p. 1-4). Dordrecht: Springer.
    
    
51. Pfeifer, N. & Kleiter, G. D. (2011). Uncertain deductive reasoning. In K. Manktelow, Over, D. E., and S. Elqayam (Eds.), The science of reason: A Festschrift for Jonathan St B.T. Evans (p. 145-166). Hove, UK: Psychology Press.    
    
    
52. Pfeifer, N. & Kleiter, G. D. (2010). The conditional in mental probability logic. In M. Oaksford & N. Chater (Eds.), Cognition and conditionals: Probability and logic in human thought (p. 153-173). Oxford: Oxford University Press.    
    
    
53. Fugard, A. J. B., Pfeifer, N., Mayerhofer, B. & Kleiter, G. D. (2009). How people interpret an uncertain If. In T. Kroupa & J. Vejnarová (Eds.). Proceedings of the 8th Workshop on Uncertainty Processing (p. 80-91), Liblice, CZ.    
    
    
54. Pfeifer, N. (2008). A probability logical interpretation of fallacies. In G. Kreuzbauer, N. Gratzl, & E. Hiebl (Eds.), Rhetorische Wissenschaft: Rede und Argumentation in Theorie und Praxis (p. 225-244). Wien: LIT.    
    
    
55. Pfeifer, N. (2007). Rational argumentation under uncertainty. In G. Kreuzbauer, N. Gratzl & E. Hiebl (Eds.). Persuasion und Wissenschaft: Aktuelle Fragestellungen von Rhetorik und Argumentationstheorie (p. 181-191). Wien: LIT.    
    
    
56. Pfeifer, N. & Kleiter, G. D. (2007). Human reasoning with imprecise probabilities: Modus ponens and Denying the antecedent. In DeCooman, G. Vejnarová, J. Zaffalon, M. (Eds.). Proceedings of the 5th International Symposium on Imprecise Probability: Theories and Applications (p. 347-356). Prague, CZ.    
    
    
57. Pfeifer, N. (2006). Contemporary syllogistics: Comparative and quantitative syllogisms. In G. Kreuzbauer & G. Dorn (Eds.). Argumentation in Theorie und Praxis: Philosophie und Didaktik des Argumentierens (p. 57-71). Wien: LIT.    
    
    
58. Pfeifer, N. & Kleiter, G. D. (2006). Is human reasoning about nonmonotonic conditionals probabilistically coherent? Proceedings of the 7th Workshop on Uncertainty Processing (p. 138-150). Mikulov, CZ.    
    
    
59. Pfeifer, N. & Kleiter G. D. (2006). Towards a probability logic based on statistical reasoning. In Proceedings of the 11th IPMU Conference (Information Processing and Management of Uncertainty in Knowledge-Based Systems) (p. 2308-2315). Paris, France.    
    
    
60. Pfeifer, N. & Kleiter, G. D. (2005). Inference in conditional probability logic. In Kroupa, T. & Vejnarová, J. (Eds.). Proceedings of the 8th Czech-Japan Seminar on Data Analysis and Decision Making under Uncertainty (p. 101-108). Trest, CZ. Revised version published 2006 in Kybernetika, 42(4), 391-404.  
    
    
61. Pfeifer, N. & Kleiter, G. D. (2003). Nonmonotonicity and human probabilistic reasoning. Proceedings of the 6th Workshop on Uncertainty Processing (p. 221-234). Hejnice, CZ.    
    
    
62. Pfeifer, N. & Kleiter, G. D. (2002). Experiments on nonmonotonic reasoning. The coherence of human probability judgments. In H. Leitgeb. & G. Schurz (Eds.), Proceedings of the 1st Salzburg Workshop on Paradigms of Cognition. Universität Salzburg, Institut für Philosophie.     A shortened version was published 2005 in Synthese, 146(1-2).  
    
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    Edited Books / Journal Issues

63. Pfeifer, N. & Sanfilippo, G. (Eds.) (2022). Editorial and interview with Angelo Gilio. The Reasoner, 16(5), 37-40.  
    
    
64. Pfeifer, N. (Ed.) (2014). Special issue on combining probability and logic to solve philosophical problems. Journal of Applied Logic, 12(3), 233-234.
    Papers by: Alan Hájek; Peter Milne; Igor Douven; Tommaso Flaminio, Lluís Godo, & Hykel Hosni; Teddy Groves; Sean Walsh; Glauber De Bona, Fabio Gagliardi Cozman, & Marcelo Finger; Dana Scott.
    
    
65. Pfeifer, N. (2014). Editorial and interview with Teddy Seidenfeld. The Reasoner, 8(3), 22-24.  
    
    
66. Pfeifer, K. & Pfeifer, N. (Eds.) (2013). Forces of nature and cultural responses. Dordrecht: Springer.   (frontmatter)
    
    
    
    This book was reviewed by:
    • Saptarishi Bandopadhyay in: Natural Hazards Observer (Volume XXXIV, Number 3, p. 30, 2015)
    • Cristina García Hernández in: Investigaciones Geográficas (Boletín 90, p. 186-188, 2016)
    
    
    
67. Pfeifer, N. (2011). Editorial and interview with Wilfrid Hodges. The Reasoner, 5(11), 178-183.  
    
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    Reviews / Reports / Handbook Entries / Abstracts

68. Michel, C., Pfeifer, N., & Rott, H. (2020). "If ifs and ands were pots and pans...": Qualitative and Quantitative Approaches to Reasoning and Conditionals, 27-28 August (Workshop Report). The Reasoner, 14(5), 40-41.  
    
    
69. Pfeifer, N., Sanfilippo, G., & Gilio, A. (2016). Coherence under uncertainty: Philosophical and psychological applications (Abstract). Dagstuhl Reports, 5(5), 102.
    
    
70. Pfeifer, N. (2014). Psychological factors in disaster responses: Stimulating an environmental historical debate (Abstract). In Proceedings of the Second World Congress of Environmental History (p. 36). Guimarães.
    
    
71. Pfeifer, N., Sanfilippo, G. & Gilio, A. (2014). Probabilistic interpretations of the square of opposition (Abstract). In Béziau, J. Y. & Gan-Krzywoszyńska (Eds.), Handbook of the World Congress on the Square of Opposition IV (p. 88-89). Poznań: Kontekst.
    
    
72. Grundmann, T., Beierle, C., Kern-Isberner, G. & Pfeifer, N. (2013). Wissen. In Stephan, A. & Walter, S. (Hrsg.), Handbuch Kognitionswissenschaft (p. 488-500). Stuttgart: J. B. Metzler.
    
    
73. Pfeifer, K. & Pfeifer, N. (2013). Severe storm reports of the 17th century: Examples from the UK and France. Proceedings of the 7th European Conference on Severe Storms (ECSS 2013), extended abstract #100. Helsinki (Finland).
    
    
74. Pfeifer, N. (2013). Combining probability and logic (Workshop Report). The Reasoner, 7(12), 141.  
    
    
75. Pfeifer, N. (2013). Normative and descriptive perspectives on natural risks (Abstract). In Proceedings of the Seventh Conference of the European Society for Environmental History (p. 6). Munich.
    
    
76. Pfeifer, N. (2012). Experiments on Aristotle's Thesis: Towards an experimental philosophy of conditionals (Abstract). The Review of Metaphysics, 2012, 65(4), 938.
    
    
77. Pfeifer, N. (2012). Rationality frameworks for conditionals (Workshop Report). The Reasoner, 6(10), 158-159.  
    
    
78. Pfeifer, K. & Pfeifer, N. (2011). Investigating historical severe storms in Austria (1604, 1807) and England (1638). Proceedings of the 6th European Conference on Severe Storms (ECSS 2011), extended abstract #38 (1-3). Palma de Mallorca, Balearic Islands (Spain).
    
    
79. Pfeifer, N. (2009). [Review of the book Numerical term logic]. Cogency: Journal of Reasoning and Argumentation, 1(2), 133-136.  
    
    
80. Pfeifer, N., Fugard, A. J. B. & Kleiter, G. D. (2009). ProbNet09: The Logic of Causal and Probabilistic Reasoning in Uncertain Environments, 19-23 February. The Reasoner, 3(4), 5-6.  
    
    
81. Pfeifer, N. (2008). On mental probability logic (Abstract). The Knowledge Engineering Review, 2008, 23, 217-226.
    
    
82. Anglberger, A., Brossel, P., Furlan, N., Greinecker, F., Karlegger, M., Pfeifer, N., Stefan, M. & Ungar, A. (2003). Rezension: Was wir Karl R. Popper und seiner Philosophie verdanken. Kriterion, 17, 23-27.
    
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    Technical Reports (unpublished)

83. Pfeifer, N. & Kleiter, G. D. (2007). Nonmonotonicity and human probabilistic reasoning (Technical report). University of Salzburg, Department of Psychology.  
    
    
84. Pfeifer, N. & Kleiter, G. D. (2005). Syllogistic reasoning with intermediate quantifiers (Technical report). University of Salzburg, Department of Psychology.    
    
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    Habilitation, PhDs, and Master's Theses

85. Pfeifer, N. (2023). Reasoning and argumentation under uncertainty. Habilitation thesis (cumulative; awarded with the habilitation prize 2025 by the University Foundation Pro Habilitatione), Department of Philosophy, University of Regensburg.
    
      Summary in German:
    
    
86. Pfeifer, N. (2012). Naturalized formal epistemology of uncertain reasoning. Second doctoral dissertation (cumulative), The Tilburg Center for Logic and Philosophy of Science, Tilburg University.
    
    
87. Pfeifer, N. (2006). On mental probability logic. First doctoral dissertation (cumulative), Department of Psychology, University of Salzburg.    
    
    The abstract is published in The Knowledge Engineering Review, 2008, 23, 217-226.
    
    
88. Pfeifer, N. (2002). Psychological investigations of human nonmonotonic reasoning with a focus on System P and the conjunction fallacy. Master's thesis, Department of Psychology, University of Salzburg.    
    
    

Presentations

Talks

1. Pfeifer, N. Artificial and human cognition under uncertainty (invited tutorial) at the 16th International Conference on Scalable Uncertainty Management (SUM 2024), Palermo (Italy), 27.-29.11.2024.
   
   
2. Fermüller, C. G. & Pfeifer, N. Probabilistic interpretations of argumentative attacks: logical and experimental results. 21st International Conference on Principles of Knowledge Representation and Reasoning (KR 2024), Hanoi (Vietnam), 2.-8.11.2024.
   
   
3. Pfeifer, N. Experimental formal philosophy of conditionals. Conditionals 2024. Barcelona (Spain), 7.-9.10.2024.
   
   
4. Pfeifer, N., & Sanfilippo, G. On Trivalent Logics, Probabilistic Weak Deduction Theorems, and a General Import-Export Principle (Part 2) Reasoning under Uncertainty: Subjective Probability and Logic. Regensburg (Germany), 26-28.8.2024.
   
   
5. Sanfilippo, G. & Pfeifer, N. G. On Trivalent Logics, Probabilistic Weak Deduction Theorems, and a General Import-Export Principle (Part 1) Reasoning under Uncertainty: Subjective Probability and Logic. Regensburg (Germany), 26-28.8.2024.
   
   
6. Pfeifer, N. Bedingte Wahrscheinlichkeiten: Paradoxien, Denken und logische Beziehungen. Universität Regensburg, Fakultät für Mathematik, Lehrstuhl Didaktik der Mathematik, Regensburg (Germany), 2.5.2024.
   
   
7. Gilio, A. Over, D. E., Pfeifer, N., & Sanfilippo, G. On independence, compound, and iterated conditionals. 2nd International conference Human and Artificial Rationalities (HAR 2023), Paris (France), 19.-22.9.2023.
   
   
8. Pfeifer, N. Suspension: perspectives from probability logic and experimental philosophy. Trivalent Suspension, Uncertainty and Reasoning with Conditionals, University of Regensburg (Germany), 30.8.-1.9.2023.
   
   
9. Pfeifer, N. What is a good argument?. The 11th European Congress of Analytic Philosophy (ECAP11), Vienna (Austria), 21.8.-25.8.2023.
   
   
10. Pfeifer, N. & Schmid, R. Early experimental research on deductive reasoning. European Society for the History of the Human Sciences (ESHHS 2023), Rome (Italy), 4.-7.7.2023.
    
    
11. Pfeifer, N. Probability logic as a rationality framework. Department of Philosophy, Westfälische Wilhelms-Universität Münster (Germany), 7.2.2023.
    
    
12. Pfeifer, N. Probability logic as a rationality framework for experimental philosophy. Online UK Experimental Philosophy Workshop, University of East Anglia (UK), 11.1.2023.
    
    
13. Pfeifer, N. Vernünftiges Denken unter Unsicherheit. Institutskolloquium, Department of Philosophy, University of Regensburg (Germany), 21.12.2022.
    
    
14. Pfeifer, N. Mental probability logic. Institute of Philosophy, Jagiellonian University, Krakow (Poland), 10.10.2022.
    
    
15. Pfeifer, N. Probabilistic semantics and empirical validation of connexive logic. Seminari del Dipartimento di Matematica e Informatica. University of Palermo (Italy), 15.9.2022.
    
    
16. Pfeifer, N. & Schmid, R. Early experimental research on deductive reasoning. Reasoning and uncertainty: probabilistic, logical, and psychological perspectives. Department of Philosophy, University of Regensburg (Germany), 9.-10.8. 2022.
    
    
17. Pfeifer, N. & Schöppl, L. Connexive logic: X-Phi results and coherence-based probability semantics. Reasoning and uncertainty: probabilistic, logical, and psychological perspectives. Department of Philosophy, University of Regensburg (Germany), 9.-10.8. 2022.
    
    
18. Pfeifer, N. & Schmid, R. Early experimental research on deductive reasoning. 13th London Reasoning Workshop. Birkbeck College, London (UK), 25.-26.8. 2022.
    
    
19. Pfeifer, N. & Schöppl, L. Reasoning about connexive principles: an experimental study. 13th London Reasoning Workshop. Birkbeck College, London (UK), 25.-26.8. 2022.
    
    
20. Pfeifer, N. The probabilistic turn in the psychology of reasoning: a necessary paradigm shift? The Fourth International Conference of the German Society for Philosophy of Science (GWP.2022). TU Berlin (Germany), 15.-17.8.2022
    
    
21. Pfeifer, N. Do's and don'ts in the experimental philosophy of logic. Department of Philosophy I, Ruhr University Bochum (Germany), 15.7.2022.
    
    
22. Pfeifer, N. Probability logic as a rationality framework. Workshop on non-classical logics and probabilistic reasoning. Workshop on non-classical logics and probabilistic reasoning. Laboratoire d'Informatique Fondamentale d'Orléans (France), 17.-18.2.2022.
    
    
23. Pfeifer, N. Towards a conceptual framework for conspiracy theory theories. The 1st International Conference on the Philosophy of Conspiracy Theory. Pitzer College, Claremont (USA), 3.-6.2.2022.   Video:
    
    
24. Pfeifer, N. & Sanfilippo, G. Two approaches to validate connexive principles: conditional events and conditional probability. 21st Trends in Logic XXI—Studia Logica International Conference "Frontiers of Connexive Logic". Ruhr-University Bochum (Germany), 6.-8.12.2021.
    
    
25. Pfeifer, N. & Fermüller, C. G. Argument strength via probabilistic interpretations of logical support and attack principles. 3rd Workshop on Argument Strength (ARGSTRENGTH2021). Online, 11.-13.10.2021.   Extended abstract:   Video:
    
    
26. Pfeifer, N. & Neger, T. Steigerung von Vortragskompetenzen Studierender durch systematisches Peer-Feedback im hybriden Kontext. Tag der digitalen Lehre (TDDL 2021). Regensburg (Germany), 28.-29.9.2021.   Video:
    
    
27. Pfeifer, N. & Sanfilippo, G. Interpreting connexive principles in coherence-based probability logic. 17th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ESQUARU 2021), Prague (Czech Republic), 21.-24.9.2021.   Video:
    
    
28. Pfeifer, N. Early experimental work on logical thinking in the light of logical positivism. XXV. Kongress der Deutschen Gesellschaft für Philosophie (DGPhil 2020), Friedrich-Alexander-Universität Erlangen-Nürnberg (Germany), 5.-8.9.2021.
    
    
29. Pfeifer, N. & Sanfilippo, G. Connexivity in coherence-based probability logic. 10th Workshop on Combining Probability and Logic (PROGIC 2021), LMU Munich (Germany), 1.9.-3.9.2021.   Video:
    
    
30. Pfeifer, N. Building bridges in the new paradigm psychology of reasoning. 28th Conference of the European Society for Philosophy and Psychology (ESPP 2021), University of Leipzig (Germany), 30.8.-2.9.2021.
    
    
31. Pfeifer, N. Early experimental-psychological work on deductive reasoning in the light of logical positivism. 26th International Congress of History of Science and Technology (ICHST) organized by the Division of History of Science and Technology (DHST) of the International Union of History and Philosophy of Science and Technology (IUHPST). Prague (Czech Republic), 25.-31.7.2021.
    
    
32. Pfeifer, N. Mental probability logic. International Conference on Thinking (ICT), Paris (France), 21.-25.6.2021.   Video:
    
    
33. Pfeifer, N. & Sanfilippo, G. Probabilized Aristotelian syllogisms as a rationality framework for quantificational reasoning. International Conference on Thinking (ICT), Paris (France), 21.-25.6.2021.   Video:
    
    
34. Pfeifer, N. Taming chance: a journey through the history and philosophy of uncertainty. Logic and Philosophy of Science Seminar (Seminario di Logica e Filosofia della Scienza). Università di Palermo (Italy), 31.3.2021.
    
    
35. Pfeifer, N. Die Zähmung des Zufalls: Ein Streifzug durch die Geschichte der Philosophie. Zufall – rechtliche, philosophische und theologische Aspekte. Universität Regensburg (Germany), 4.-5.3.2021.
    
    
36. Pfeifer, N. & Sanfilippo, G. Connexivity in coherence-based probability logic. 6th Workshop on Connexive Logics, Bochum (Germany), 3.-4.12.2020.
    
    
37. Pfeifer, N. Systematisches Peer-Feedback als Training von (digitalen) Vortragskompetenzen. Tag der digitalen Lehre (TDDL 2020). Regensburg (Germany), 28.-30.9.2020.   Video:
    
    
38. Pfeifer, N. Aristotle's logical thinking probabilized: from qualitative to quantitative reasoning and back. "If ifs and ands were pots and pans...": Qualitative and quantitative approaches to reasoning and conditionals (virtual workshop), Department of Philosophy, University of Regensburg (Germany), 27.-28.8.2020.
    
    
39. Pfeifer, N., & Sanfilippo, G. Probability propagation in selected Aristotelian syllogisms. 15th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ESQUARU 2019), Belgrade (Serbia), 18.-20.9.2019.
    
    
40. Pfeifer, N. Probabilistic Knowledge of Probabilistic Knowledge. International Workshop on Knowledge of Knowledge. University of Regensburg (Germany), 22.-23.8.2019.
    
    
41. Pfeifer, N. Are connexive principles coherent? 16th International Congress on Logic, Methodology and Philosophy of Science and Technology "Bridging across academic cultures" (CLMPST2019). Prague (Czech Republic) 5.-10.8.2019.
    
    
42. Pfeifer, N. & Tulkki, L. Probabilistic truth table tasks, imprecision, and delta-p. 12th London Reasoning Workshop (LRW2019), London (UK), 18.-19.7.2019.
    
    
43. Pfeifer, N. What makes a good argument? Logic and Philosophy of Science Seminars (Seminario di Logica e Filosofia della Scienza). Università di Palermo (Italy), 17.4.2019.
    
    
44. Pfeifer, N. Connexivity under coherence. Reasoning under partial knowledge. Conference in honor of Giulianella Coletti's 70th birthday. Department of Mathematics and Computer Science (University of Perugia, Perugia) and Palazzo Trinci (Foligno) 14.-15.12.2018.
    
    
45. Pfeifer, N. Mentale Wahrscheinlichkeitslogik: Denken und Argumentation unter Unsicherheit. Universität Regensburg, Fakultät für Mathematik, Lehrstuhl Didaktik der Mathematik, Regensburg (Germany), 15.11.2018.
    
    
46. Pfeifer, N. Connexive principles under uncertainty. 4th Workshop on Connexive Logics (part of Logic in Bochum IV), Bochum (Germany), 19.-21.10. 2018.
    
    
47. Pfeifer, N. & Sanfilippo, G. Probabilistic semantics for categorical syllogisms of Figure II. 12th International Conference on Scalable Uncertainty Management (SUM 2018), Milan (Italy), 3.-5.10.2018.
    
    
48. Pfeifer, N. Coherent conditional probability as a basis for reasoning about conditionals and syllogisms. New Perspectives on Conditionals and Reasoning, University of Regensburg (Germany), 5.-6.9.2018.
    
    
49. Pfeifer, N. Recent advances in mental probability logic. 11th London Reasoning Workshop (LRW2018), London (UK), 24.-27.7.2018.
    
    
50. Pfeifer, N. Experimental mathematical philosophy of uncertainty. Institute of Philosophy, University of Graz (Austria), 13.6.2018.
    
    
51. Pfeifer, N. Experimental pragmatics: a probability-logical perspective. New Pragmatic Theories based on Experimental Evidence (XPRAG) Annual Meeting 2018, University of Graz (Austria), 11.-12.6.2018.
    
    
52. Pfeifer, N. & Fermüller, C. G. Probabilistic interpretations of argumentative attacks: logical and experimental foundations. 11th Workshop on Uncertainty Processing (WUPES'18). Třeboň (Czech Republic), 6.-9.6.2018.
    
    
53. Pfeifer, N. Probabilistic philosophy of language. Logik Café, Department of Philosophy, University of Vienna (Austria), 5.3.2018.
    
    
54. Pfeifer, N. Probability logic and rationality. Seventh Conference of the Priority Program "New Frameworks of Rationality". Schloss Etelsen (Germany), 18.-21.2.2018.
    
    
55. Pfeifer, N. Human rationality: a probability-logical perspective. Rationality and Reasoning Workshop, Cité des Sciences et de l'Industrie, Paris (France), 22.11.2017.
    
    
56. Pfeifer, N. Experimental mathematical philosophy. II. Workshop of the Experimental Philosophy Group Germany, Institute of Cognitive Science, Philosophy of Mind and Cognition Group, University of Osnabrück (Germany), 16.-18.11.2017.
    
    
57. Pfeifer, N. Probability logic: recent advances and applications. Theory and Logic Group. Faculty of Informatics. TU Wien. Vienna (Austria), 25.10.2017.
    
    
58. Pfeifer, N. & Pankka, H. Modeling the Ellsberg paradox by argument strength. 39th Cognitive Science Society Meeting (CogSci 2017), London (UK), 26.-29.7.2017.
    
    
59. Pfeifer, N. Modelling uncertain reasoning within mental probability logic. 10th London Reasoning Workshop (LRW2017), London (UK), 24.-26.7.2017.
    
    
60. Sanfilippo, G., Pfeifer, N., & Gilio, A. Generalized probabilistic modus ponens.. 14th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ESQUARU 2017), Lugano (Switzerland), 10.-14.7.2017.
    
    
61. Pfeifer, N. Erkenntnis trotz Unsicherheit. Philosophisches Kolloquium, Institut für Philosophie, Heinrich Heine Universität Düsseldorf (Germany), 28.6.2017.
    
    
62. Pfeifer, N. Probabilistic argumentation: Towards a unified theory of argumentation. 2nd European Conference on Argumentation: Argumentation and Inference (ECA 2017). Fribourg (Switzerland), 20.-23.6.2017.
    
    
63. Pfeifer, N. Probabilistic argumentation. Invited talk at the Interdisciplinary Lab for Intelligent and Adaptive Systems at the University of Luxembourg (ILIAS). Luxembourg (Luxembourg), 24.5.2017.
    
    
64. Pfeifer, N. & Sanfilippo, G. Coherent nested conditional syllogisms under uncertainty. The Eighth Workshop on Combining Probability and Logic (progic2017), Ludwig-Maximilians-University Munich (Germany), 29.-31.3.2017.
    
    
65. Pfeifer, N. Negation under uncertainty. Sixth Conference of the Priority Program "New Frameworks of Rationality". Schloss Etelsen (Germany), 5.-8.3.2017.
    
    
66. Pfeifer, N. Psychological conceptions of belief. Conceptions of belief in philosophy and science. University of Regensburg (Germany), 29.9.-1.10.2016.
    
    
67. Gilio, A., Over, D. E., Pfeifer, N. & Sanfilippo, G. Centering and compound conditionals under coherence. 8th International Conference on Soft Methods in Probability and Statistics (SMPS 2016). Rome (Italy), 12.-14.9.2016.
    
    
68. Pfeifer, N. & Sanfilippo, G. Square of opposition under coherence. 8th International Conference on Soft Methods in Probability and Statistics (SMPS 2016). Rome (Italy), 12.-14.9.2016.
    
    
69. Pfeifer, N., Sanfilippo, G., Gilio, A., & Over, D. E. Compounds and iterations of conditionals in probabilistic reasoning under coherence. International Conference on Thinking (ICT 2016). Brown University (USA), 4.-6.8.2016.
    
    
70. Sanfilippo, G. & Pfeifer, N. Imprecise probability assessments and the Square of Opposition. 28th European Conference on Operational Research (EURO 2016). Poznań (Poland), 3.-6.7.2016.
    
    
71. Pfeifer, N. Probabilistic experimental pragmatics beyond Bayes' theorem. Rationality, Probability, and Pragmatics. Zentrum für Allgemeine Sprachwissenschaft (ZAS) Berlin (Germany), 25.-27.5.2016.
    
    
72. Pfeifer, N. The coherence perspective on conditionals: Formal and experimental work. The Cognitive Science Research Platform, University of Vienna (Austria), 28.4.2016.
    
    
73. Pfeifer, N. Cognition and Natural Disasters: Stimulating an Environmental Historical Debate. Logic and Philosophy of Science Seminars (Seminario di Logica e Filosofia della Scienza). Università di Palermo (Italy), 2.3.2016.
    
    
74. Pfeifer, N. A new rationality framework for categorical syllogisms. Human Rationality: Probabilistic Points of View (I). Villa Vigoni: German-Italian Centre for European Excellence (Italy), 23.-26.11.2015.
    
    
75. Pfeifer, N. & Stöckle-Schobel, R. Uncertain conditionals and counterfactuals in (non-)causal settings. EuroAsianPacific Joint Conference on Cognitive Science (4th European Conference on Cognitive Science; 10th International Conference on Cognitive Science). Torino (Italy), 25.-27.9.2015.
    
    
76. Pfeifer, N. Reasoning about uncertain conditionals. Institute of Information Theory and Automation, Czech Academy of Sciences (UTIA). Prague (Czech Republic), 10.8.2015.
    
    
77. Pfeifer, N. Cognitive foundations of defeasible reasoning. 15th Congress of Logic, Methodology and Philosophy of Science. (CLMPS 2015). Helsinki (Finland), 3.-8.8.2015.
    
    
78. Gilio, A., Pfeifer, N. & Sanfilippo, G. Transitive reasoning with imprecise probabilities. 13th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU 2015). Université de Technologie de Compiègne, Compiègne (France), 15.-17.7.2015
    
    
79. Pfeifer, N. & Stöckle-Schobel, R. The probability of indicative and counterfactual conditionals in causal and non-causal settings. Causal and Probabilistic Reasoning Conference. Munich (Germany), 18.-20.6.2015.
    
    
80. Pfeifer, N. Interactions of formal and empirical work in interdisciplinary practice. Academy of Finland Centre of Excellence in the Philosophy of the Social Sciences (TINT), University of Helsinki (Finland), 11.6.2015.
    
    
81. Pfeifer, N., Sanfilippo, G., & Gilio, A. Coherence under uncertainty: Philosophical and psychological applications. Dagstuhl Seminar 15221: Multi-disciplinary approaches to reasoning with imperfect information and knowledge—A synthesis and a roadmap of challenges. Schloss Dagstuhl (Germany), 25.-29.5.2015.
    
    
82. Sanfilippo, G., Pfeifer, N. & Gilio, A. Probabilistic interpretations of the square of opposition. Seminario di Logica e Filosofia della Scienza. Università di Palermo (Italy), 1.4.2015.
    
    
83. Pfeifer, N., Sanfilippo, G. & Gilio, A. Probability semantics for categorical syllogisms. Seminario di Logica e Filosofia della Scienza. Università di Palermo (Italy), 25.3.2015.
    
    
84. Pfeifer, N. Coherence-based probability logic: Rationality under uncertainty. Fourth Conference of the Priority Program "New Frameworks of Rationality". Schloss Etelsen (Germany), 15.-18.3.2015.
    
    
85. Pfeifer, N. & Stöckle-Schobel, R. Exploring counterfactual and causal conditionals. Fourth Conference of the Priority Program "New Frameworks of Rationality". Schloss Etelsen (Germany), 15.-18.3.2015.
    
    
86. Sanfilippo, G., Pfeifer, N. & Gilio, A. Probabilistic inference and syllogisms. 7th International Conference of the ERCIM WG on Computational and Methodological Statistics (ERCIM 2014), Pisa (Italy), 6.-8.12.2014.
    
    
87. Pfeifer, N. The coherence perspective on reasoning about uncertainty. Reasoning and Making Decisions Workshop, Ludwigsburg (Germany), 17.-18.11.2014.
    
    
88. Pfeifer, N. Transitivity, uncertain conditionals & cognition. Symposium "Rationality Frameworks for Reasoning in Uncertain Environments" (Symposium organizers: Niki Pfeifer & Gerhard Schurz) at the 22nd Meeting of the European Society for Philosophy and Psychology (ESPP 2014), Noto (Italy), 16.-19.9.2014.
    
    
89. Pfeifer, N. Psychological factors in disaster responses: Stimulating an environmental historical debate. Second World Congress of Environmental History, University of Minho (Guimarães, Portugal), 8.-12.7.2014.
    
    
90. Pfeifer, N. Mental probability logic: Conditionals and quantification. Department of Psychology, University of Freiburg (Germany), 18.6.2014.
    
    
91. Pfeifer, N., Sanfilippo, G. & Gilio, A. Probabilistic interpretations of the square of opposition. 4th World Congress on the Square of Opposition (Vatican), 5.-9.5.2014.
    
    
92. Kern-Isberner, G., Pfeifer, N., & Eichhorn, C. Experiments on uncertain conditionals and network approaches to reasoning. Third Conference of the Priority Program "New Frameworks of Rationality". Schloss Etelsen (Germany), 9.-12.3.2014.
    
    
93. Pfeifer, N. Coherence based probability logic: Rationality under uncertainty. Institut für Philosophie (Lehrstuhl für Theoretische Philosophie), Universität Regensburg (Germany), 17.2.2014.
    
    
94. Pfeifer, N. Conditionals: Philosophical foundations and empirical evaluation. Dipartimento di Scienze Economiche, Aziendali e Statistiche, Università di Palermo (Italy), 25.10.2013.
    
    
95. Pfeifer, N. Reasoning under uncertainty: Quantification and conditionals. Dipartimento di Matematica e Informatica, Università di Palermo (Italy), 24.10.2013.
    
    
96. Pfeifer, N. The mind and probability logic. Philosophy of Science Colloquium, Institute Vienna Circle, University of Vienna (Austria), 6.9.2013.
    
    
97. Pfeifer, N. Normative and descriptive perspectives on natural risks. Seventh Biennial Conference of the European Society for Environmental History, "Circulating Natures: Water–Food–Energy", Ludwig-Maximilians-University Munich (Germany), 20.-24.8.2013.
    
    
98. Pfeifer, N. Mathematical philosophy meets mathematical psychology. 46th Annual Meeting of the Society of Mathematical Psychology, Potsdam (Germany), 4.-7.8.2013.
    
    
99. Pfeifer, N. Conditionals under incomplete knowledge. 7th London Reasoning Workshop (LRW2013), London (UK), 25-26.7.2013.
    
    
100. Pfeifer, N. Incomplete probabilistic knowledge and cognition. 21st Meeting of the European Society for Philosophy and Psychology (ESPP 2013), Granada (Spain), 9-12.7.2013.
     
     
101. Pfeifer, N. How people (ought to) reason under uncertainty. CFE Workshop on Cognition and Formal Theories of Reasoning, Carnegie Mellon University (USA), 30.3.2013.
     
     
102. Pfeifer, N. Probability logic and human reasoning. Center for Philosophy of Science (Lunchtime talk), University of Pittsburgh (USA), 5.3.2013. Photos.
     
     
103. Pfeifer, N. Formal and cognitive foundations of probabilistic justification. Judgment and Justification (conference), University of Tampere (Finland), 24.-26.9.2012.
     
     
104. Pfeifer, N. Modeling uncertain inference: Formal and cognitive foundations. Department Methodology & Statistics. Maastricht University (The Netherlands), 13.9.2012.
     
     
105. Pfeifer, N. Naturalized formal epistemology of uncertain reasoning. PhD defense at the Graduate School for Humanities, Tilburg University (The Netherlands), 10.9.2012.
     
     
106. Pfeifer, N. Introduction to rationality frameworks for conditionals. Rationality frameworks for conditionals (workshop). Munich Center for Mathematical Philosophy (Germany), 17.8.2012.
     
     
107. Pfeifer, N. Measuring argument strength. 5th eColloq on Argumentation, The World Wide Web, 19.7.2012.
     
     
108. Pfeifer, N. The mental probability logical perspective on the new psychology of reasoning. 7th International Conference on Thinking, Birkbeck College and University College London (UK), 4.-6.7.2012.
     
     
109. Pfeifer, N. Probabilistic justification. Justification II: From Reasons to Reasoning (workshop), Collège de France (hosted by the Institut Jean Nicod; invited talk) Paris (France), 3.5.2012.
     
     
110. Pfeifer, N. Rational reasoning with conditionals and probabilities. Logical foundations and empirical evaluation. SPP 1516 "New frameworks of rationality" kickoff workshop, Tutzing (Germany), 20.-23.3.2012.
     
     
111. Pfeifer, K. & Pfeifer, N. Investigating historical severe storms in Austria (1604, 1807) and England (1638). 6th European Conference on Severe Storms, ECSS 2011, Palma de Mallorca (Spain), 3.-7.10.2011.
     
     
112. Pfeifer, N. & Douven, I. Formal epistemology + psycholoy of reasoning = experimental philosophy of uncertain reasoning. Formal Epistemology Meets Experimental Philosophy, Tilburg (The Netherlands), 29.-30.9.2011.
     
     
113. Pfeifer, N. Probability and logic in psychology: a new form of psychologism? LogICCC Final Conference, Berlin (Germany), 15.-18.9.2011.
     
     
114. Pfeifer, N. Coherence based probability logic: Philosophical and psychological applications. The Fifth Workshop on Combining Probability and Logic (progic2011), Columbia University, New York (USA), 10.-11.9.2011.
     
     
115. Pfeifer, K. & Pfeifer, N. Remembering natural disasters. Annual conference of the International Society for Cultural History (ISCH 2011), Oslo (Norway), 3.-6.8.2011.
     
     
116. Pfeifer, N. Towards an experimental philosophy of uncertain reasoning. 14th Congress of logic, methodology, and philosophy of science, Nancy (France), 19.-26.7.2011.
     
     
117. Pfeifer, N. Applying coherence based probability logic to philosophical problems. Workshop on Bayesian Methods in Philosophy, Carl-Friedrich von Siemens Foundation Munich (Germany), 15.6.2011. Video recording (released on July 2).
     
     
118. Pfeifer, N. Combining formal epistemology and the psychology of reasoning. The Institute for Logic, Language and Computation, Amsterdam (The Netherlands), 26.5.2011.
     
     
119. Pfeifer, N. Material conditionals are usually not assertable in uncertain environments. Conditionals, Counterfactuals and Causes in Uncertain Environments (invited talk), Düsseldorf (Germany), 19.-22.5.2011.
     
     
120. Pfeifer, N., Sanfilippo, G. & Gilio, A. Coherent probabilistic quantification, existential import and Aristotelian syllogistics. Vague Quantities and Vague Quantifiers (VQ2), Berlin (Germany), 8.-9.12.2010.
     
     
121. Pfeifer, N. Human interpretation and reasoning about conditionals. Workshop on Dialogues, Inference, and Proof - Logical and Empirical Perspectives, Vienna (Austria), 26.-28.11.2010.
     
     
122. Pfeifer, N. Rational argumentation under uncertainty: A probability logical approach. Workshop on Bayesian Argumentation (invited talk), Lund (Sweden), 22.-23.10.2010.
     
     
123. Pfeifer, N. Mental probability logic. SPP 1516 "New frameworks of rationality" kickoff workshop, Potsdam (Germany), 7.-9.10.2010.
     
     
124. Pfeifer, N. Wahrscheinlichkeitslogik als Rationalitätsnorm. KogWis 2010 - The 10th Biannual Meeting of the German Society for Cognitive Science (invited talk), Potsdam (Germany), 3.-6.10.2010.
     
     
125. Pfeifer, N. Aristotle's thesis, syllogisms and human probabilistic reasoning. Dipartimento di Scienze Statistiche e Matematiche "Silvio Vianelli", Università degli Studi di Palermo (Italy), 10.9.2010.
     
     
126. Fugard, A. J. B. & Pfeifer, N. The psychology of deduction in a probabilistic setting. Talk at the symposium What is a deduction? Integrating logical, psychological and philosophical perspectives, at the Annual Meeting of the European Society for Philosophy and Psychology, Bochum and Essen (Germany), 25.-28.8.2010.
     
     
127. Pfeifer, N. Experiments on Aristotle's Thesis: New evidence against the material conditional interpretation 5th London Reasoning Workshop, London (UK), 29.-30.7.2010.
     
     
128. Pfeifer, N. The role of logic and probability in the psychology of reasoning. Seminar for Mathematical Logic at the Mathematical Institute of the Serbian Academy of Sciences and Arts (invited talk), Belgrade (Serbia), 4.6.2010.
     
     
129. Pfeifer, N. Properties of probabilistic argument forms. Mathematical Institute of the Serbian Academy of Sciences and Arts (invited talk), Belgrade (Serbia), 3.6.2010.
     
     
130. Pfeifer, N. Denken mit unsicheren Konditionalen. Abteilung Allgemeine Psychologie und Kognitionsforschung, Justus-Liebig-Universität Giessen (Germany), 1.6.2010.
     
     
131. Pfeifer, N. Investigating probabilistic argument forms. Formal Epistemology Project, Centre for Logic & Analytical Philosophy, University of Leuven (Belgium), 20.4.2010.
     
     
132. Pfeifer, N. Investigating human inference in a probability logic framework. Research Seminar in Epistemology and Philosophy of Science, invited by the Tilburg Center for Logic and Philosophy of Science, Tilburg (The Netherlands), 6.4.2010.
     
     
133. Pfeifer, N. Human conditional reasoning and Aristotle's Thesis. PROBNET'10 (Probabilistic networks) workshop, Salzburg (Austria), 25.-28.2.2010.
     
     
134. Fugard, A. J. B., Pfeifer, N., Mayerhofer, B. & Kleiter, G. D How people converge on an interpretation of conditionals. PROBNET'10 (Probabilistic networks) workshop, Salzburg (Austria), 25.-28.2.2010.
     
     
135. Fugard, A. J. B. & Pfeifer, N. What does probability have to do with how people reason? Department of Psychology, University of Salzburg (Austria) invited by the Salzburger Gesellschaft für Psychologie, 13.1.2010.
     
     
136. Pfeifer, N. Towards a probabilistic semantics of syllogisms. LogiCCC working day at WUPES 2009, Liblice (Czech Republic), 23.9.2009.
     
     
137. Fugard, A. J. B., Pfeifer, N., Mayerhofer, B. & Kleiter, G. D. How people interpret an uncertain If. 8th Workshop on Uncertainty Processing (WUPES 2009), Liblice (Czech Republic), 19.-23.9.2009.
     
     
138. Pfeifer, N. Modeling human conditional reasoning by probability logic. Conditionals and Conditionalization, Leuven (Belgium), 4.-6.9.2009.
     
     
139. Pfeifer, N., Kratzer, L., Fugard, A. J. B. & Kleiter, G. D. Do people understand probabilistic (non-)informativeness? 4th London Reasoning Workshop, London (UK), 27.-28.7.2009.
     
     
140. Fugard, A. J. B., Pfeifer, N., Mayerhofer, B. & Kleiter, G. D. Conditional interpretation in a generalized probabilistic truth table task. 4th London Reasoning Workshop, London (UK), 27.-28.7.2009.
     
     
141. Pfeifer, N. Cognition and conditionals. Conditionals. A one-day workshop at the University of Düsseldorf (Germany), 11.5.2009.
     
     
142. Pfeifer, N., Kratzer, L. & Kleiter, G. D. What do people think about the paradoxes of the material conditional? PROBNET'09 (The Logic of Causal and Probabilistic Reasoning in Uncertain Environments) workshop, Salzburg (Austria), 19.2.-23.2.2009.
     
     
143. Pfeifer, N. & Kleiter, G. D. Uncertain deductive reasoning. 3rd London Reasoning Workshop, London (UK), 18.-19.8.2008.
     
     
144. Pfeifer, N. & Kleiter, G. D. Human reasoning about uncertain conditionals. 3rd International Workshop on Data--Algorithms--Decision Making, Liblice (Czech Republic), 9.12.-11.12.2007.
     
     
145. Pfeifer, N. & Kleiter, G. D. Conditional reasoning in mental probability logic. PROBNET'07 (Probabilistic networks and uncertain reasoning) workshop, Salzburg (Austria), 29.11.-2.12.2007.
     
     
146. Pfeifer, N. & Kleiter, G. D. Framing human inference by coherence based probability logic. 10th Czech-Japan Seminar on Data Analysis and Decision-Making under Uncertainty, Liblice (Czech Republic), 15.-18.9.2007.
     
     
147. Pfeifer, N. & Kleiter, G. D. Framing human inference by coherence based probability logic. The Third Workshop on Combining Probability and Logic (progic07), Canterbury (UK), 5.-7.9.2007.  
     
     
148. Pfeifer, N. & Kleiter, G. D. The Conditional in Mental Probability Logic. 2nd London Reasoning Workshop, London (UK), 28.-29.8.2007.
     
     
149. Pfeifer, N. & Kleiter, G. D. Human reasoning with imprecise probabilities: Modus ponens and Denying the antecedent. 5th International Symposium on Imprecise Probability: Theories and Applications, Prague (Czech Republic), 16.-19.7.2007.
     
     
150. Pfeifer, N. Probabilistic argumentation. Talk (30 min.) given at the 4. Salzburger Rhetorik Gespräche at the University of Salzburg, 13.-14.4.2007.
     
     
151. Pfeifer, N., Bauerecker, F. & Kleiter, G. D. Human conditional reasoning. Talk (30 min.) given at the PROBNET'06 (Probabilistic networks and uncertain reasoning) workshop, Salzburg (Austria). 30.11.-4.12.2006.
     
     
152. Pfeifer, N. Mental probability logic. Talk (60 min.) given at the Department of Philosophy of the Heinrich Heine University (Chair of Theoretical Philosophy), Düsseldorf (Germany), 28.11.2006.
     
     
153. Pfeifer, N. & Kleiter, G. D. Is human reasoning about nonmonotonic conditionals probabilistically coherent? Talk (45 min.) given at the 7th Workshop on Uncertainty Processing WUPES 2006, Mikulov (Czech Republic), 16.-20.9.2006.
     
     
154. Pfeifer, N. & Kleiter, G. D. Towards a probability logic based on statistical reasoning. Talk given by Kleiter at the 11th IPMU Conference (Information Processing and Management of Uncertainty in Knowledge-Based Systems), Paris (France), 2.-7.7.2006.
     
     
155. Pfeifer, N. & Kleiter, G. D. Denken mit nichtmonotonen Konditionalen . Talk (60 min.) given at the Department of Psychology for the Salzburger Gesellschaft für Psychologie (Austria), 7.6.2006
     
     
156. Pfeifer, N. Argumentation mit unsicherem Wissen. Talk (30 min.) given at the 3. Salzburger Rhetorik Gespräche at the University of Salzburg (Austria), 21.-22.4.2006.
     
     
157. Pfeifer, N. & Kleiter, G. D. Experiments on human nonmonotonic reasoning. Talk (40 min.) given at the PROBNET'05 (Probabilistic networks and uncertain reasoning) workshop, Salzburg (Austria). 2.-5.12.2005.
     
     
158. Pfeifer, N. & Kleiter, G. D. Logical validity and probabilistic informativeness. Talk (30 min.) given at the VRSR (October Soft-Computing Workshop), Rickach v Orlickych horach (Czech Republic), 11.-13.11.2005.
     
     
159. Pfeifer, N. & Kleiter, G. D. Schlüsse mit Wahrscheinlichkeitsintervallen. Talk (45 min.) given at the Fachbereich Philosophie an der Kultur- und Geisteswissenschaftlichen Fakultät der Universität Salzburg (Austria), 3.11.2005.
     
     
160. Pfeifer, N. & Kleiter, G. D. Inference in conditional probability logic. Talk given at the 8th Czech-Japan Seminar on Data Analysis and Decision Making under Uncertainty, Trest (Czech Republic), 18.-21.9.2005.
     
     
161. Pfeifer, N. Syllogistik modern. Talk (30 min.) given at the 2. Salzburger Rhetorik Gespräche at the University of Salzburg, 1.4.2005. Abstract (in German).
     
     
162. Pfeifer, N. Komparative und quantitative Syllogistik. Talk (45 min.) given at the Fachbereich Philosophie an der Kultur- und Geisteswissenschaftlichen Fakultät der Universität Salzburg, 3.3.2005.
     
     
163. Pfeifer, N. & Kleiter, G. D. Generalized quantifiers. Talk (40 min.) given at the PROBNET'04 (Perfect sequences and their application to multidimensional model representation) workshop, Salzburg (Austria). 2.-5.12.2004.
     
     
164. Pfeifer, N. & Kleiter, G. D. Investigating human nonmonotonic reasoning. Talk (20 min.) given at the 5th International Conference on Thinking, Leuven (Belgium), 22.-24.7.2004.
     
     
165. Pfeifer, N. & Kleiter, G. D. Nonmonotonicity and human probabilistic reasoning. Talk (30 min.) given at the 6th Workshop on Uncertainty Processing WUPES 2003, Hejnice (Czech Republic), 24.-27.9.2003.
     
     
166. Pfeifer, N. & Kleiter, G. D. Nichtmonotones Schließen. Talk (60 min.) given at the Department of Psychology for the Salzburger Gesellschaft für Psychologie, 18.6.2003. Abstract (in German).
     
     
167. Pfeifer, N. & Kleiter, G. D. Human nonmonotonic reasoning and the coherence of probabilistic inferences. Talk (40 min.) given at the PROBNET'02 (Psychological and Algorithmic Methods in Probabilistic Networks) workshop, Salzburg (Austria). 6.-9.10.2002.
     
     
168. Pfeifer, N. & Kleiter, G. D. Experiments on nonmonotonic reasoning and the coherence of human probability judgments. Talk (40 min.) given at the "First Salzburg Workshop on Paradigms of Cognition". 18.-20.7.2002.
     
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     Posters

169. Pfeifer, N. Towards an experimental philosophy of argumentation (Poster presentation). 1st European Experimental Philosophy Conference, Prague (Czech Republic), 17.-19.6.2021.     Video:
     
     
170. Pfeifer, N. & Tulkki, L. Abductive, causal, and counterfactual conditionals under incomplete probabilistic knowledge. In 39th Cognitive Science Society Meeting, CogSci 2017, London (UK), 26.-29.7.2017     See also the paper in the proceedings.
     
     
171. Pfeifer, N. & Yama, H. Counterfactuals, indicative conditionals, and negation under uncertainty: Are there cross-cultural differences? 39th Cognitive Science Society Meeting, CogSci 2017, London (UK), 26.-29.7.2017     See also the paper in the proceedings.
     
     
172. Pfeifer, K. & Pfeifer, N. Severe storm reports of the 17th century: Examples from the UK and France. Poster. 7th European Conference on Severe Storms, ECSS 2013, Helsinki (Finland), 3-7.6.2013.  
     
     
173. Pfeifer, N. & Kleiter, G. D. Uncertain deductive reasoning. Poster. 6th International Conference on Thinking, Venice (Italy), 21.-23.8.2008.
     
     
174. Pfeifer, N. & Kleiter, G. D. Human reasoning with imprecise probabilities: Modus ponens and Denying the antecedent. Poster. 5th International Symposium on Imprecise Probability: Theories and Applications, Prague (Czech Republic), 16.-19.7.2007.
     
     
175. Pfeifer, N. Mental probability logic---A competence model of human reasoning. Poster. 6th Summer Institute on Bounded Rationality in Psychology and Economics, Berlin (Germany) 10.-18.8.2006.  
     
     This poster was awarded with the 3rd prize (out of 40) in the poster awards.
     
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     Videos

     Towards a conceptual framework for conspiracy theory theories (CTConference2022, video presentation):
     
     
     Argument strength via probabilistic interpretations of logical support and attack principles (ARGSTRENGTH2021, video presentation):
     
     
     Steigerung von Vortragskompetenzen Studierender durch systematisches Peer-Feedback im hybriden Kontext. (TDDL 2021, video presentation):
     
     
     Interpreting connexive principles in coherence-based probability logic (ESQUARU 2021, video presentation):
     
     
     Connexivity in coherence-based probability logic (PROGIC 2021, video presentation):
     
     
     Mental probability logic (ICT 2021, video presentation):
     
     Correction: at minutes 3:15–3:50 it should read: "C|A is ... void if A is FALSE"
     
     Probabilized Aristotelian syllogisms as a rationality framework for quantificational reasoning (ICT 2021, video presentation):
     
     
     Towards an experimental philosophy of argumentation (XPhi Europe 2021, poster presentation):
     
     
     
     Systematisches Peer-Feedback als Training von (digitalen) Vortragskompetenzen (TDDL 2020, video presentation):
     
     
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     Interviews

176. Alles fake? Interview über Schlussfolgerungen unter Unsicherheiten. BMBF-Portal für die Geistes- und Sozialwissenschaften, 6.10.2022.  
     
     
177. Niki Pfeifer was interviewed in The Reasoner 5(4), 2011, p. 54 (Five questions to the center's initial team of the Munich Center for Mathematical Philosophy).
     
     
178. Radio interview on human nonmonotonic reasoning (Reporter: M. Mayer). September 2003, Ö2 Radio Salzburg.
     
     
179. Radio interview on human nonmonotonic reasoning (Reporter: M. Mayer). 12.9.2003, 19:05, Ö1 (the cultural and principal news channel of Austria), Dimensionen.
     
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