The ultimatum game is a simple bargaining situation where the behavior of people frequently contradicts the optimal strategy according to classical game theory. Thus, according to many scholars, the commonly observed behavior should be considered irrational. We argue that this putative irrationality stems from a wrong conception of metanormativity (the study of norms about the establishment of norms). After discussing different metanormative conceptions, we defend a Quinean, naturalistic approach to the evaluation of norms. After reviewing empirical literature on the ultimatum (...) game, we argue that the common behavior in the ultimatum game is rational and justified. We therefore suggest that the norms of economic rationality should be amended. (shrink)

I question the widespread assumption that when we act for reasons we know what our reasons are. I argue that an agent may act in ignorance, or partial ignorance, regarding his or her reasons, and an action involving ignorance of this sort may still qualify as done for reasons. I conclude from here that we need to develop a suitable new model of action for reasons, and I proceed to offer such a model. Briefly, I argue that an action qualifies (...) as done for reasons when the agent performing that action possesses a reasons explanation of it and is (at least partly) motivated to act by the fact he possesses such an explanation. The crucial point is that the agent may not be motivated – not even in part – by the content of the reasons that constitute the explanation in question. (shrink)

Podejmując problem niejęzykowych myśli, Bermudez rozważa go przede wszystkim na dwóch płaszczyznach: epistemologicznej i eksplanacyjnej. Płaszczyzna epistemologiczna dotyczy tego, jak możliwe jest przypisywanie myśli do istot nieposługujących się językiem oraz czy możliwe jest poznanie treści niejęzykowych myśli. Do rozwiązania tego problemu Bermudez posłużył się koncepcją semantyki sukcesu, która umożliwia poznanie zawartości przekonań i pragnień oraz zastosowanie wyjaśniania psychologicznego. Płaszczyzna eksplanacyjna dotyczy natomiast takiej atrybucji myśli do NC, która odpowiednio wyjaśniałaby ich zachowanie. W tym celu Bermudez rozszerza pojęcie racjonalności do NC (...) przez wyróżnienie jej różnych poziomów. Ponadto wyodrębnia protologikę, ukazującą, jak praktyczne rozumowanie może być przypisywane do NC. Główne zarzuty w stosunku do jego stanowiska dotyczą m.in. relacji między myśleniem a wnioskowaniem, stosowanej metodologii oraz rozszerzonego pojęcia racjonalności. (shrink)

The neural basis of developmental changes in transitive reasoning in parietal regions was examined, using voxel-based morphometry. Young adolescents and adults performed a transitive reasoning task, subsequent to undergoing anatomical magnetic resonance imaging brain scans. Behaviorally, adults reasoned more accurately than did the young adolescents. Neural results showed less grey matter density in superior parietal cortex in the adults than in the young adolescents, possibly due to a developmental period of synaptic pruning; improved performance in the reasoning task was negatively (...) correlated with grey matter density in superior parietal cortex in the adolescents, but not in the adult group; and the latter results were driven by the more difficult trials, requiring greater spatial manipulation. Taken together, the results support the idea that during development, regions in superior parietal cortex are fine-tuned, to support more robust spatial manipulation, resulting in gre... (shrink)