1. Contributors; 2. Preface; 3. Part One: Re-Modelling Logic; 4. Introduction (by Barth, E.M.); 5. A Necessary Component of Logic: Empirical Argumentation Analysis (by Naess, Arne); 6. 1. Logic has empirical components and needs empirical research; 7. 2. 'Argumentation analysis'; 8. 3. Options in a clarification and assessment game; 9. 4. Analysis of agreement and pseudo-agreement; 10. 5. Degree of definiteness of intention (discrimination acuity) as a factor in argumentation; 11. 6. The hermeneutical spiral as a factor in argumentation; 12. Die Dialogische Begrundung Von Logikkalkulen (by Lorenzen, P.); 13. 1. Drei Typen von Logikkalkulen; 14. 2. Das Begrundungsproblem; 15. 3. Empraktische Einfuhrung der Verwendungsregeln; 16. 4. Materiale Dialoge: Semantik; 17. 5. Erweiterungen der strengen Dialoge: Liberalisierungen; 18. 6. Die effektive Dialogregel; 19. 7. Das Problem der Konsistenz: Schnittregel; 20. 8. Die klassische Dialogregel; 21. 9. Die Beziehung materialer Dialoge zu Logikkalkulen; 22. 10. Zur Frage der sog: Vollstandigkeit; 23. 11. Vollstandigkeit ohne Semantik; 24. Sherlock Holmes Confronts Modern Logic: Toward a Theory of Information-Seeking Through Questioning (by Hintikka, Jaakko); 25. 1. Sherlock Holmes vs. philosophers on deduction; 26. 2. Making tacit information explicit through questioning; 27. 3. The structure of question-inference complexes; 28. 4. On the principle of total evidence. Bayesianism; 29. 5. The role of observations; 30. 6. Question-answer sequences as games against Nature; 31. 7. Payoffs and strategies; 32. 8. Deductions sometimes replaceable by questions and answers; 33. Semantical Games and Transcendental Arguments (by Hintikka, Jaakko); 34. 1. Kant on the logic of existence; 35. 2. Seeking and finding, and game-theoretical semantics; 36. 3. A transcendental refutation of certain related views; 37. 4. A test-case: branching quantifiers; 38. 5. Material vs. logical truth, formal argumentation, and semantics; 39. 6. From semantical games to dialogical ones; 40. Towards a General Theory of Argumentation (by Apostel, Leo); 41. 1. Logic and rhetorics, heuristics, proof theory; 42. 2. Theory of discussion; 43. 3. What are discussions?; 44. 4. Reduction to the theory of (inter-)action; 45. 5. "Proponent", "Opponent", "defence" and "attack"; 46. 6. Systematic connections between the theory of games and some theories discussed at this conference; 47. 7. Hamblin's theory: What is an argument?; 48. 8. Decomposition of argumentative texts: Sub-games; 49. 9. Equivocation and use of metaphors; 50. Theory of Argumentation and the Dialectical Garb of Formal Logic (by Krabbe, Erik C.W.); 51. Ein Konstruktiver Weg Zur Semantik Der "Moglichen Welten" (by Inhetveen, Rudiger); 52. 1. Dialogebenen: Spielregel; 53. 2. Beispiele; 54. 3. Beziehung zu den modallogischen Standardsystemen; 55. Part Two: Choosing the Rules; 56. Introduction (by Barth, E.M.); 57. On the Criteria for the Choice of Rules of Dialogic Logic (by Lorenz, Kuno); 58. 1. A game-theoretic pragmatic conception of truth; 59. 2. Specifying the game ("global" game rules); 60. 3. Argument rules ("local" game rules); 61. 4. Subjunction; 62. 5. Formal winning-strategy and formal truth; 63. 6. A theorem of formal dialogic logic; 64. A Normative-Pragmatical Foundation of the Rules of some Systems of Formal3 Dialectics (by Barth, E.M.); 65. 1. New foundations: Statemental dialogue attitudes; 66. 2. Two purposes - presentation of the dialectical systems, and the problem of fallacy; 67. 3. Basic norms and ends; implementations; 68. 4. Dialectics should be systematic and thorough going; 69. 5. Dialectics should be orderly and dynamic; 70. 6. Epilogue: The three elementary phases of a critical discussion; 71. Part Three: Describing Argumentative Dialogues; 72. Introduction (by Barth, E.M.); 73. A Set of Concepts for the Study of Dialogical Argumentation (by Gunther, Arnold); 74. 1. Introduction; 75. 2. Argumentation - informally described; 76. 3. Dialogue bases; 77. 4. Co-operative argumentative dialogues and argumentation; 78. Montague-Grammars for Argumentative Dialogues (by Heidrich, Carl H.); 79. 1. Introduction; 80. 2. Background and motivation; 81. 3. An example of a dialogue; 82. 4. A Montague-grammar; 83. Part Four: Analysing Philosophy; 84. Introduction (by Barth, E.M.); 85. Formal Dialectics as Immanent Criticism of Philosophical Systems (by Krabbe, Erik C.W.); 86. 1. Introduction; 87. 2. The provocative thesis; 88. 3. Critical interpretation of the logical constants; 89. 4. Information-seeking interpretation of the logical constants; 90. An Application of Empirical Argumentation Analysis to Spinoza's "Ethics" (by Naess, Arne); 91. 1. The propositions of the "Ethics" conceived of as arguments in a debate; 92. 2. Spinoza's theses of equivalence; 93. 3. Equivalences as arguments; 94. Finite Debates About "The Infinite" (by Barth, E.M.); 95. 1. Two philosophical paradigms; 96. 2. "Tongue-twisting for the sake of consistency" - a recent description of the Weierstrass method; 97. 3. Two-role logic and the notion of 'limit'; 98. 4. Instantaneous velocities; 99. 5. Paradigmatically misleading expressions; 100. 6. Conclusion; 101. Part Five: Analysing Interaction; 102. Introduction (by Barth, E.M.); 103. A Decision-Theoretical Interpretation of Dialogues (by Leopold-Wildburger, Ulrike); 104. On the Philosophy of Argument and the Logic of Common Morality (by Dun, F. van); 105. 1. Dialectical argument and first principles; 106. 2. The fundamental principle of morality; 107. 3. A dialogical approach to the logic of common morality; 108. Theory of Argumentation: A Chronological Bibliography of some Important Works; 109. A. Chronological Bibliography; 110. B. Index of Names to Chronological Bibliography