No. 1-2 Jacek Malinowski and Rafał Palczewski: Logic in Cognitive Science Alison Pease and Andrew Aberdein: Five Theories of Reasoning: Interconnections and Applications to Mathematics Robert Trypuz and Piotr Kulicki: A Norm-Giver Meets Deontic Action Logic Andrzej Wiśniewski: Propositions, Possible Worlds, and Recursion Gerard Allwein, Yingrui Yang and William L. Harrison: Qualitative Decision Theory via Channel Theory Victor K. Finn and Maria A. Mikheyenkova: Plausible Reasoning for the Problems of Cognitive Sociology Paweł Łupkowski: A Formal Approach to Exploring the Interrogator's Perspective in the Turing Test JlRf Raclavsky and Petr kuchyñka: Conceptual and Derivation Systems Mariusz Urbański: Logic and Cognition: Two Faces of Psychologism No. 3 Andrzej Indrzejczak: Admissibility of Cut in Congruent Modal Logics * 189 Josef Wolfgang Degen: Socrates Did It Before Gödel 205 Marcin Tkaczyk: On Axiomatization of Lukasiewicz's Four-Valued Modal Logic 215 Robert Sochacki: Refutation Systems for a System of Nonsense-Logic 233 Gemma Robles and José M. Méndez: A Class of Simpler Logical Matrices for the Variable-Sharing Property 241 hsing-chien Tsai: More on the Decidability of Mereological Theories 251 Book Reviews 267 No. 4 Hartley Slater: Back to Aristotle! Szymon Frankowski: Syntactic Properties of P-Conse-quence Thomas Studer: Justification Logic, Inference Tracking, and Data Privacy Kordula Świętorzecka: Some Remarks on Formal Description of God's Omnipotence Marzenna Cyzman: "Lying, poets tell the truth ...". The Logical Status of Fictional Discourse by John Searle — a Still Possible Solution to an Old Problem? Davide Bondoni: Structural Features in Ernst Schroder's Work. Part I