In this paper we present the results of a simulation study of credence developments in groups of communicating Bayesian agents, as they update their beliefs about a given proposition p. Based on the empirical literature, one would assume that these groups of rational agents would converge on a view over time, or at least that they would not polarize. This paper presents and discusses surprising evidence that this is not true. Our simulation study shows that these groups of Bayesian agents (...) show group polarization behavior under a broad range of circumstances. This is, we think, an unexpected result, that raises deeper questions about whether the kind of polarization in question is irrational. If one accepts Bayesian agency as the hallmark of epistemic rationality, then one should infer that the polarization we find is also rational. On the other hand, if we are inclined to think that there is something epistemically irrational about group polarization, then something must be off in the model employed in our simulation study. We discuss several possible interfering factors, including how epistemic trust is defined in the model. Ultimately, we propose that the notion of Bayesian agency is missing something in general, namely the ability to respond to higher-order evidence. (shrink)

Over the last century, there have been considerable variations in the frequency of use and types of diagrams used in mathematical publications. In order to track these changes, we developed a method enabling large-scale quantitative analysis of mathematical publications to investigate the number and types of diagrams published in three leading mathematical journals in the period from 1885 to 2015. The results show that diagrams were relatively common at the beginning of the period under investigation. However, beginning in 1910, they (...) were almost completely unused for about four decades before reappearing in the 1950s. The diagrams from the 1950s, however, were of a different type than those used earlier in the century. We see this change in publication practice as a clear indication that the formalist ideology has influenced mathematicians’ choice of representations. Although this could be seen as a minor stylistic aspect of mathematics, we argue that mathematicians’ representational practice is deeply connected to their cognitive practice and to the contentual development of the discipline. These changes in publication style therefore indicate more fundamental changes in the period under consideration. (shrink)

Compromise; criminal law; tribal law; Islamic law.

Derrida, Jacques; criticism and interpretation; philosophy, Modern; 20th century.

While scientific interest in the relationship between psychotherapeutic praxis and spirituality is growing, there is still little knowledge on this topic, especially in an East Central European context. To explore how psychotherapists understand spiritual issues and experiences they encounter in their work and to learn what happens to these issues in the course of psychotherapy, this study analyses semi-structured interviews with 30 Hungarian psychotherapists. Applying a grounded theory analytical strategy, three main topics were identified: the therapist's attitude towards spirituality leaves (...) a discernible trace in the psychoterapeutic treatment; the therapist influences the way spiritual issues are treated; and the therapist may have a shared spiritual experience with the client. We present individual variations of these experiences as they appear in the code tree. Results are interpreted with reference to a systemic view of the psychotherapeutic process, the intersubjective space of patient and therapist, and the notion of the therapists’ mentalizational capacity. (shrink)

Ibn Taymīyah, Aḥmad ibn ʻAbd al-Ḥalīm, 1263-1328; views on philosophy, Islamic; Muslim philosophers; history; apologetic work; editor's Ph.D. dissertation.

Muḥammad ibn ʻAbd al-Wahhāb, 1703 or 4-1792; Wahhābīyah; philosophy, Islamic; Islamic fundamentalism.

Abū Zahrah, Muḥammad; criticism and interpretations.