Similarity is central for the definition of concepts in several theories in cognitive psychology. However, similarity encounters several problems which were emphasized by Goodman in 1972. At the end of his article, Goodman banishes similarity from any serious philosophical or scientific investigations. If Goodman is right, theories of concepts based on similarity encounter a huge problem and should be revised entirely. In this paper, we would like to analyze the notion of similarity with some insight from psychological works on analogical (...) cognition. Analogical cognition compares two situations or objects in order to find similarities between them. In doing so, the analogical process sorts the different features of the two situations or objects and determines the most important ones. The analogical process is also highly sensitive to context. Context-sensitivity is desirable at some level, but it is also problematic as it leads to a computational explosion. To answer this problem, we would like to consider salience as a possible heuristic in the analogical process. We will distinguish three forms of salience: Sensory, categorical, and operational. By taking salience into account, we can introduce a shortcut into the computation of similarity and circumvent computational explosion. (shrink)

Abstract“Natural syllogisms” are arguments formally identifiable with categorical syllogisms that have an implicit universal affirmative premise retrieved from semantic memory rather than explicitly stated. Previous studies with adult participants (Politzer, 2011) have shown that the rate of success is remarkably high. Because their resolution requires only the use of a simple strategy (known as ecthesis in classic logic) and an operational use of the concept of inclusion (the recognition that an element that belongs to a subset must belong to the (...) set but not vice versa), it was hypothesized that these syllogisms would be within the grasp of non‐adult participants, provided they have acquired the notion of deductive validity. Here, 11‐year‐old children were presented with natural syllogisms embedded in short dialogs. The first experiment showed that their performance was equivalent to adults' highest level of performance in standard experiments on syllogisms. The second experiment, while confirming children's proficiency in solving natural syllogisms, showed that they outperformed children who solved non‐natural matched syllogisms in the same experimental setting. The results are also in agreement with the argumentation theory of reasoning. (shrink)

Ce texte propose une série de réflexions qui s'inscrivent dans la lignée des travaux menés avec Douglas Hofstadter sur les processus analogiques. Nous estimons que ces réflexions sont à la fois profondément compatibles avec les idées de Gilles Fauconnier et soulignent l'importance de ses contributions. Plus précisément, cet article a trois objets. Le premier remet en question la possibilité d'une perception littérale et rend au contraire cette hypothèse psychologiquement improbable. Il soutient une perspective interprétative selon laquelle les concepts s'interposent dans (...) toutes les activités mentales, de la perception la plus triviale aux idées les plus abstraites. Le deuxième concerne les liens entre analogie et catégorisation, aboutissant au constat que les distinctions établies entre ces notions dans le sens commun et les traditions académiques se dissolvent au fur et à mesure que l'analyse s'approfondit. Le troisième met l'accent sur les intrications contre-intuitives entre form... (shrink)