A modified visual search task demonstrates that humans are very good at resuming a search after it has been momentarily interrupted. This is shown by exceptionally rapid response time to a display that reappears after a brief interruption, even when an entirely different visual display is seen during the interruption and two different visual searches are performed simultaneously. This rapid resumption depends on the stability of the visual scene and is not due to display or response anticipations. These results are (...) consistent with the existence of an iterative hypothesis-testing mechanism that compares information stored in short-term memory (the perceptual hypothesis) with information about the display (the sensory pattern). In this view, rapid resumption occurs because a hypothesis based on a previous glance of the scene can be tested very rapidly in a subsequent glance, given that the initial hypothesis-generation step has already been performed. (shrink)

Abductive problems have been widely studied in propositional logic. First order abduction, however, has been viewed as intractable, for the undecidability of logical consequence. In this paper, we propose a notion of abductive problem, N-abductive problem, which is relative to the cardinality of the minimal model satisfying the given theory. We use a notion of restricted satisfaction, also relative to a domain cardinality. Finally, we propose an effective procedure for the searching of abductive solutions, by means of a modification of (...) Beth's tableaux. (shrink)

Humans perceive time with millisecond precision. However, when experiencing negative or fearful events, time appears to slow down and aversive events are judged to last longer than neutral or positive events of equal duration. Feelings of control have been shown to attenuate increases in arousal triggered by anxiety-provoking events. Here, we tested whether feelings of control can go as far as influencing people’s perception of the world, by modulating the perceived duration of aversive events. Observers judged the duration of images (...) depicting positive or negative content, and we manipulated the amount of control experienced by participants. Crucially, participants never had any real control over events. All control was illusory. Results showed that when participants experienced low levels of control, negative images were judged as lasting longer than positive images. However, when participants illusorily experienced high levels of control, they no longer experienced aversive negative images as lasting longer than positive images. (shrink)

This research is part of a more extensive programme that deals with intercultural ethics from different perspectives. All of them share a common inspiration sprung from UNESCO’s Intercultural Ethics Project. The main goal of this paper consists in offering pragmatic/theoretical tools in order to analyse a cultural and political issue which is currently very important in Spain: the confrontation between those promoting Spanish national culture and those promoting the Basque one. I approach this confrontation in terms of discursive praxis, reaching (...) the conclusion that only if both groups are capable of self-understanding will they be capable of reciprocal-understanding, and only then will it be possible to maintain peace in our country. (shrink)

En este escrito se trata de mostrar una concepción de la educación como un proceso desarrollado colectivamente a partir de la realización de las “vocaciones vitales” y de la capacidad de “darse cuenta”, en todos los contextos de la vida.

This article discusses conditions in Colombia and the need for emancipation from colonial stereotypes. It describes communities of learning that have been created as spaces in which people can practice making sense of their world. It describes a project in Bogot and reflects on what has been done and what was learned in trying to create communities of learning.

This research is part of a more extensive programme that deals with intercultural ethics from different perspectives. All of them share a common inspiration sprung from UNESCO’s Intercultural Ethics Project. The main goal of this paper consists in offering pragmatic/theoretical tools in order to analyse a cultural and political issue which is currently very important in Spain: the confrontation between those promoting Spanish national culture and those promoting the Basque one. I approach this confrontation in terms of discursive praxis, reaching (...) the conclusion that only if both groups are capable of self-understanding will they be capable of reciprocal-understanding, and only then will it be possible to maintain peace in our country. (shrink)

The strict limits imposed on this paper make it necessary to confine it to a schematic resume of problems the importance of which demands an extended and exhaustive treatment. For this reason the author feels constrained to treat only a few of the many problems which, when duly considered, are capable of producing a radical modification in the field of epistemology. Likewise, the author cannot arrive at any settled conclusion, since he is hindered by the extent and close reasoning of (...) Heidegger's work, his subtlety, and the fact that his work is not yet completed. The intellectual revolt in which Heidegger's existentialism consists is based in part on a critical restatement of the problem of being and, further, in a series of concepts, namely, the world, utility and presence, the duality of subject and object, ontology and knowledge, all subordinated to the most important and ultimately superior concept of existence. These concepts and their revision, as a point of departure for Heidegger's existentialism, owe their origin to phenomenology and philosophy of life (above all, Dilthey's). From the revision of the above-mentioned concepts, by distinguishing in each one of them what, by reason of its inaccuracy, is a source of confusion, there are derived possible changes which, in the view of the author of this paper, may be described as: (1) the subject-object correlation, (2) knowledge, (3) the intellectual function as ground of the possibility of knowledge, and (4) the categories. With regard to the first problem--that of the subject-object correlation--it must be said that if it does not really disappear in Heidegger, he has profoundly modified it, since he does not accept the view held by his predecessors in all the history of philosophy that in the subject-object correlation there are given: (a) the subject, (b) the object, (c) the act of knowledge, and (d) the categories as entities equipped with absolute independence and unique peculiarities. The old view cannot be true, because, says Heidegger, at the start human existence appears so interested in its own being that there is no extra-subjective being prior to the being of human existence. The extra-human, that which is not purely existential (as human existence alone is), is given as useful, whatever it be. Human existence is comprehension of its own being. This comprehension, at the same time that it establishes the being of human existence, also renders possible whatever else is given, in the manifestation of a what rather than in that of a how. Or it may be that the theoretical yields to a prior qualification and by the same basic principle in the constitution of the world, and this qualification is the pragmatic character of the total reality. In harmony with this, it follows, according to Heidegger, that it is impossible to locate subject and object on the same plane; this is already equivalent to locating existence (who) and reality (what) on the same plane. It means nothing to speak of a determination of the subject by the object or vice versa, since there is no way of proving that a predetermination of the subjective and the objective precedes the determination so as to render possible the determination and with it the correlation. And if this is impossible, the intellectual function which makes knowledge possible is annulled, and every pre-essence of forms or manifestations of theoretic nature, such as the nous, the Platonic ideas, the Aristotelian active intellect or the Kantian a priori--all are dissolved in the presence of Heidegger's thesis of the uniqueness of (human) existence and the world, inasmuch as it affirms that knowledge is merely a modality of being-in-the-world. Finally, with regard to the categories, the chief negation of Heidegger proceeds from the fact that, up to this time, the categories are considered sometimes as situated in the object, sometimes in the subject, and zppear to be valid for all being. Heidegger is opposed to this; he postulates categories for the existentials different from those which prevail for other entities. He does not accept a categorial structure which is closed within itself and incapable of alteration. Finally, for him, the categries are interpretative in contrast to the traditional view that they are entitative and to Kant's view that they are constitutive. (shrink)

The aim of this paper is to elucidate some aspects of Karl Popper’s logic of research and place it in the philosophical discussion of scientific discovery. A closer look into his proposal reveals that his work, in the light of recent literature, does point into the direction of some fundamental m..

This research is part of a more extensive programme that deals with intercultural ethics from different perspectives. All of them share a common inspiration sprung from UNESCO’s Intercultural Ethics Project. The main goal of this paper consists in offering pragmatic/theoretical tools in order to analyse a cultural and political issue which is currently very important in Spain: the confrontation between those promoting Spanish national culture and those promoting the Basque one. I approach this confrontation in terms of discursive praxis, reaching (...) the conclusion that only if both groups are capable of self-understanding will they be capable of reciprocal-understanding, and only then will it be possible to maintain peace in our country. (shrink)

Deep neural networks (DNNs) have had extraordinary successes in classifying photographic images of objects and are often described as the best models of biological vision. This conclusion is largely based on three sets of findings: (1) DNNs are more accurate than any other model in classifying images taken from various datasets, (2) DNNs do the best job in predicting the pattern of human errors in classifying objects taken from various behavioral datasets, and (3) DNNs do the best job in predicting (...) brain signals in response to images taken from various brain datasets (e.g., single cell responses or fMRI data). However, these behavioral and brain datasets do not test hypotheses regarding what features are contributing to good predictions and we show that the predictions may be mediated by DNNs that share little overlap with biological vision. More problematically, we show that DNNs account for almost no results from psychological research. This contradicts the common claim that DNNs are good, let alone the best, models of human object recognition. We argue that theorists interested in developing biologically plausible models of human vision need to direct their attention to explaining psychological findings. More generally, theorists need to build models that explain the results of experiments that manipulate independent variables designed to test hypotheses rather than compete on making the best predictions. We conclude by briefly summarizing various promising modeling approaches that focus on psychological data. (shrink)

Research targeting emotion’s impact on relational episodic memory has largely focused on spatial aspects, but less is known about emotion’s impact on memory for an event’s temporal associations. The present research investigated this topic. Participants viewed a series of interspersed negative and neutral images with instructions to create stories linking successive images. Later, participants performed a surprise memory test, which measured temporal associations between pairs of consecutive pictures where one picture was negative and one was neutral. Analyses focused on how (...) the order of negative and neutral images during encoding influenced retrieval accuracy. Converging results from a discovery study (N = 72) and pre-registered replication study (N = 150) revealed a “forward-favouring” effect of emotion in temporal memory encoding: Participants encoded associations between negative stimuli and subsequent neutral stimuli more strongly than associations between negative stimuli and preceding neutral stimuli. This finding may reflect a novel trade-off regarding emotion’s effects on memory and is relevant for understanding affective disorders, as key clinical symptoms can be conceptualised as maladaptive memory retrieval of temporal details. (shrink)

The formalization of abductive reasoning has received increasing attention from logicians. However, few work is found beyond abduction in propositional logic, given that in a first order formalism, the undecidability problem naturally appears, and therefore an abductive problem cannot even be appropriately formulated. Still, many applications in artificial intelligence allow finite domains to work with, and this gives an opportunity to apply abduction in first order logic with restricted domains. In this paper, we present an approach to abductive reasoning in (...) C-structures, first order structures with a finite domain in which each of its elements has a corresponding constant representing its interpretation. By using semantic tableaux with bounded depth, that is, C-tableaux (a modification of N-tableaux, introduced by the authors in previous papers) and δ-resolution calculus, we build an effective procedure for the searching of minimal abductive solutions within the proposed semantics. (shrink)

Pre-reading language skills develop rapidly in early childhood and are related to brain structure and functional architecture in young children prior to formal education. However, the early neurobiological development that supports these skills is not well understood. Here we acquired anatomical, diffusion tensor imaging and resting state functional MRI from 35 children at 3.5 years of age. Children were assessed for pre-reading abilities using the NEPSY-II subtests 1 year later. We applied a data-driven linked independent component analysis to explore the (...) shared co-variation of gray and white matter measures. Two sources of structural variation at 3.5 years of age demonstrated relationships with Speeded Naming scores at 4.5 years of age. The first imaging component involved volumetric variability in reading-related cortical regions alongside microstructural features of the superior longitudinal fasciculus. The second component was dominated by cortical volumetric variations within the cerebellum and visual association area. In a subset of children with rs-fMRI data, we evaluated the inter-network functional connectivity of the left-lateralized fronto-parietal language network and its relationship with pre-reading measures. Higher functional connectivity between the FPL and the default mode and visual networks at 3.5 years significantly predicted better Phonological Processing scores at 4.5 years. Together, these results suggest that the integration of functional networks, as well as the co-development of white and gray matter brain structures in early childhood, support the emergence of pre-reading measures in preschool children. (shrink)

Masked priming experiments occasionally revealed surprising effects: Participants responded slower for congruent compared to incongruent primes. This negative congruency effect was ascribed to inhibition of prime-induced activation [Eimer, M., & Schlaghecken, F. . Response faciliation and inhibition in subliminal priming. Biological Psychology, 64, 7–26.] that sets in if the prime activation is sufficiently strong. The current study tests this assumption by implementing manipulations designed to vary the amount of prime-induced activation in three experiments. In Experiments 1 and 3, NCEs were (...) observed despite reduced prime-induced activation. Experiment 2 revealed no NCE with at least similar prime strength. Thus, the amount of prime activation did not predict whether or not NCEs occurred. The findings are discussed with regard to the inhibition account and the recently proposed account of mask-induced activation [cf. Lleras, A., & Enns, J. T. . Negative compatibility or object updating? A cautionary tale of mask-dependent priming. Journal of Experimental Psychology: General, 133, 475–493; Verleger, R., Jaskowski, P., Aydemir, A., van der Lubbe, R. H. J., & Groen, M. . Qualitative differences between conscious and nonconscious processing? On inverse priming induced by masked arrows. Journal of Experimental Psychology: General, 133, 494–515]. (shrink)