Ontology of early visual content

The main goal of the paper is to sketch an ontological model of visual content at the low- and medium-level of visual processing, relying on psychological conceptions of vision. It is argued that influential cognitive models contain assumptions concerning “objects of content,” that is, objects whose presence is a necessary condition of the adequacy of visual representations. Subsequently, the structure of considered objects of content is presented, and its development through the perceptual process is described. In addition, during the course of the article I present some connections between analytic metaphysics and the ontology of visual content.     

Islam in the academic sphere in senegal: the case of Cheikh Anta Diop University in Dakar (UCAD)

This paper discusses the changing socio-cultural landscape at Cheikh Anta Diop University of Dakar (UCAD), Senegal. It shows how the growing influence of the religious phenomenon since the late 1970s has encouraged young students to develop an Islamic activism that tends to replace the revolutionary and secular traditions that had dominated the space since the founding of this Senegalese university in 1957. These transformations, which take the form of a “decomplexification” of religion and of a communitarisation of the academic sphere, are also a reflection of the ongoing transformations in Senegalese society marked by a citizenship in transition. This transition translates itself into a duality between a “national citizenship,” with a francophone and secular character, and a “cultural citizenship,” inspired by Islam and initially driven by an Arab-Islamic elite as it negotiates its place in the public and administrative spheres that have historically been dominated by francophone elites.     

Valuable and pernicious collective intellectual self-trust1

Recent years have seen a shift in epistemological studies of intellectual self-trust or epistemic self-trust: intellectual self-trust is not merely epistemologists’ tool for silencing epistemic skepticism or doubt, it is recognized as a disposition of individuals and collectives interesting in its own rights. In this exploratory article I focus on a particular type of intellectual self-trust—collective intellectual self-trust—and I examine which features make for valuable or pernicious collective intellectual self-trust. From accounts of the value of individual intellectual self-trust I take three frameworks for evaluating collective intellectual self-trust: an epistemically consequentialist, a virtue-theoretic and a prudential/pragmatic framework (§2). Then I introduce collective intellectual self-trust (§3). Against this background I explain what is distinctive of valuable collective intellectual self-trust (§4) and pernicious collective intellectual self-trust (§5) within the three frameworks. I close by discussing the relation between the three frameworks and argue that evaluating intellectual self-trust requires a multi-perspectival approach constituted by the three frameworks.     

A belief in trend reversal requires access to cognitive resources

There are two research traditions studying people's reactions to random binary events: one concerns serial choice reaction times, the other concerns predictions of events in a series. The present studies focused on comparing expectations between these two approaches. We formed and tested a general hypothesis that, regardless of the type of task, when an individual faces a sequence of events they initially expect trend continuation. Only when people assume that a sequence is random might they override the default and expect trend reversal instead. In a series of experiments we found that limitation of access to cognitive resources enhances expectations of trend continuation. Our interpretation of this finding is that an expectation of trend continuation is the default for the human cognitive system and that a belief in trend reversal requires access to cognitive resources to overcome the tendency to expect trend continuation.     

Lifestyle traits as predictors of driving behaviour in urban areas of Greece

The aim of this study was to examine possible links between different lifestyle patterns and aberrant driver’s behaviour. Personal interviews were conducted in a representative sample of 324 adults (18–65), all residents of Crete. Aberrant driver’s behaviour was assessed by the ‘driver behaviour questionnaire’ (DBQ). Also to measure different dimensions of lifestyle, first, a 26-items questionnaire was used, and second, three questions measuring ‘driving without destination’, related in previous findings with road accident risk. Four lifestyle patterns: ‘religion/tradition’, ‘driving aimlessly’, ‘sports’ and ‘culture’ are significant predictors of ordinary violations. ‘Driving without destination’ has a significant effect all three DBQ factors (b positive). ‘Religion/tradition’ was related only to ordinary violations (b negative) and ‘sports’ has a positive impact on ordinary violations and a negative impact on ‘errors’. Two lifestyle factors are related to more dangerous driving: ‘Driving without destination’ and/or pursuing a more ‘athletic way of living’. Road safety campaigns must teach the first group to use other hobbies and activities to vent their feelings and the second, not to overestimate their abilities, while driving.     

Directed forgetting of autobiographical memory in mild Alzheimer's disease

Using the autobiographical directed forgetting method (Barnier et al., 2007), the present paper addressed the intentional inhibitory processes of episodic and semantic autobiographical memory in Alzheimer's disease (AD). Mild AD patients and healthy elderly people were instructed to either forget or to continue remembering previously generated autobiographical events. In a later recall test they were asked to reconstruct the early-generated memories regardless of the forget/remember instruction. Autobiographical reconstruction was further distributed into episodic and semantic memories. Results showed no forget instruction effect on episodic or semantic autobiographical recall with AD patients, whereas healthy elderly people were able to inhibit only episodic autobiographical memories. The findings suggest an impairment of the intentional inhibitory processes in autobiographical memory with AD and a relative preservation of these mechanisms with normal ageing. They also demonstrate an earlier decline in the intentional inhibitory processes compared to the autobiographical deterioration in AD.     

VEP latency and some properties of simple motor reaction-time distribution

Summary The median of simple motor reaction (RT) to a flash parallels the latencies of visually evoked potential (VEP) deflections if flash intensity is varied. However, mean and median reaction times are not equal because of the skewness of RT distribution. It therefore seemed plausible that the mean reaction time — intensity relationship would be steeper than that for VEP latency. Such divergence would account for the intensity-dependent motor component of RT revealed by other psychophysical studies. The latencies of VEP deflections were measured as a function of intensity and the results were compared with mean and median RTs. The difference between mean and median RT is constant and independent of flash intensity. Moreover, both values are parallel to VEP latency. The general pattern of results remains the same after a change in the distribution from which the foreperiod is sampled.