Discrete choice experiments—selecting the best and/or worst from a set of options—are increasingly used to provide more efficient and valid measurement of attitudes or preferences than conventional methods such as Likert scales. Discrete choice data have traditionally been analyzed with random utility models that have good measurement properties but provide limited insight into cognitive processes. We extend a well-established cognitive model, which has successfully explained both choices and response times for simple decision tasks, to complex, multi-attribute discrete choice data. The (...) fits, and parameters, of the extended model for two sets of choice data (involving patient preferences for dermatology appointments, and consumer attitudes toward mobile phones) agree with those of standard choice models. The extended model also accounts for choice and response time data in a perceptual judgment task designed in a manner analogous to best–worst discrete choice experiments. We conclude that several research fields might benefit from discrete choice experiments, and that the particular accumulator-based models of decision making used in response time research can also provide process-level instantiations for random utility models. (shrink)
El filósofo francés Alain Guy (La Rochelle, 1918 - Narbonne, 1998) dedicó por entero su vida al estudio de la filosofía española e hispanoamericana, dándola a conocer no sólo en el extranjero sino también en nuestro país.
For decisions between many alternatives, the benchmark result is Hick's Law: that response time increases log-linearly with the number of choice alternatives. Even when Hick's Law is observed for response times, divergent results have been observed for error rates—sometimes error rates increase with the number of choice alternatives, and sometimes they are constant. We provide evidence from two experiments that error rates are mostly independent of the number of choice alternatives, unless context effects induce participants to trade speed for accuracy (...) across conditions. Error rate data have previously been used to discriminate between competing theoretical accounts of Hick's Law, and our results question the validity of those conclusions. We show that a previously dismissed optimal observer model might provide a parsimonious account of both response time and error rate data. The model suggests that people approximate Bayesian inference in multi-alternative choice, except for some perceptual limitations. (shrink)
A las conmemoraciones que hacen los hispanistas de acontecimientos y personalidades del 98, será preciso añadir en los sucesivos el recuerdo del hispanista filósofo francés Alain Guy (La Rochelle 1918 - Narbonne 1998), porque este eminente profesor de Historia de la Filosofía Española e Iberoamericana en la Universidad de Toulouse-le-Mirail, ha dedicado intensamente su vida docente y su actividad investigadora a difundir el conocimiento de los filósofos españoles de todos los tiempos y a suscitar la investigación sobre los mismos.
Neste ensaio, pretendemos evidenciar o marxismo crítico de Guy Debord a partir de uma revisitação de Maio de 1968. Cinquenta anos depois deste evento, com efeito, impõe‑se a pergunta: «Em que medida a definição situacionista da subjectividade anticapitalista ainda mantém a sua pertinência histórico‑crítica?» Não sendo simples, a resposta equivale, afinal, à avaliação do marxismo debordiano, tendo em vista discriminar, a seu respeito, o que está vivo e o que está morto.
Pedro Abelardo apresenta na sua obra uma teoria da virtude de natureza, à primeira vista, aristotélica. Ao que parece, essa concepção também contém diferentes elementos estoicos, que não se opõem necessariamente à visão do Estagirita. Todavia, o essencial da interpretação da Escola do Pórtico acerca da virtude difere da explicação dada por Aristóteles. No presente estudo, pretendemos examinar, primeiro, a índole da virtude como habitus na obra de lógica de Abelardo. Nesse caso, não há dúvida de que predomina a influência (...) aristotélica. Em seguida, indicamos outras particularidades da virtude encontradas, desta vez, em tratados éticos e teológicos do nosso protagonista, as quais se revelam antes de caráter estoico. Em suma, projetamos identificar as diferentes fontes antigas e os principais intermediários latinos usados por Abelardo para elaborar a sua própria teoria da virtude. Trata-se de deixar clara a influência filosófica dominante em Abelardo sobre essa questão da virtude, já que este lógico não pode harmonizar teses substancialmente inconciliáveis. Peter Abelard in his work presents a theory of virtue, which is, at first sight, of Aristotelian nature. It seems that this view also contains different Stoic elements, but they are not necessarily opposed to Stagirite's vision. However, the essentials of the Stoa School about virtue differ from the explanation given by Aristotle. In this paper, we intend to examine, first, the nature of virtue as habitus in Abelard's work on logic. In this case, there is no doubt that Aristotle's influence on this topic predominates. Next, we specify other features related to virtue found, this time, in ethical and theological treatises of our protagonist that appear to be basically Stoic. In short, we want to identify the different ancient sources and the main Latin mediators used by Abelard to elaborate his own theory of virtue. In other words, we would like to shed light on the predominant philosophical authority on Abelard's theory of virtue since this logician cannot harmonize theses that are fundamentally irreconcilable. (shrink)
