In this volume, leading international cognitive psychologists elucidate and engage with the invaluable contribution of Paolo Legrenzi to the field of thinking and reasoning.

Part 1: Problem Solving. P. Johnson-Laird, The Shape of Problems. J. Evans, Insight and Self-insight in Reasoning and Decision Making. Part 2: Deductive Reasoning. W. Schaeken, J. Baptiste van der Henst, It's Good to be Wrong: An Analysis of Mistakes in Relational Reasoning. J.A. Garcia-Madruga, F. Gutierrez, N. Carriedo, J.M. Luzon, J.Ó. Vila, Working Memory and Propositional Reasoning: Searching for New Working Memory Tests. R. Byrne, C. Walsh, Resolving Contradictions. Part 3: Pragmatics, Hypotheses, and Probabilities. J.P. Caverni, S. Rossi, J-L. Peris, How to Defocus in Hypothesis Testing: Manipulating the Initial Triple in the 2-4-6 Problem. G. Politzer, L. Macchi, The Representation of the Task: The Case of the Lawyer-Engineer Problem in Probability Judgement. Part 4: Probabilistic Judgement. D. Over, Naïve Probability and Its Model Theory. V. Girotto, M. Gonzalez, Probabilistic Reasoning and Combinatorial Analysis. Part 5: Social and Emotional Aspects of Decision Making.D. Green, Affect and Argument. F. Butera, C. Buchs, Reasoning Together: From Focusing to Decentering. E. Shafir, E. Carlisle, Heuristics and biases in attitudes towards herbal medicines.