Internal validity of the French version of the Family Coping Questionnaire (FCQ): A confirmatory factor analysis.

Family members of patients with schizophrenia, especially when they assume caregivers' positions, experience difficulties to adapt to the situation. To gain insight into these caregivers' coping style is a challenge to decrease the stress of family members, and in this way, improve patient related outcome. The FCQ (Family Coping Questionnaire) is an adapted clinical assessment tool that focuses on specific ways to cope with dysfunction that characterize the psychotic pathology. The goal of this study was to provide validity evidence about the French version of the FCQ. Swiss and French family members of individuals suffering from schizophrenia (n = 204) responded to the FCQ. A confirmatory factor analysis (CFA) was applied estimating two models. The seven-factor model showed adequate fit to the data while the three-factor model fit was poor. This FCQ internal validation showed an adequate model fit with a French population including various family members (parents, siblings, etc.) of persons with enduring mental illness

Active inference, sensory attenuation and illusions.

Active inference provides a simple and neurobiologically plausible account of how action and perception are coupled in producing (Bayes) optimal behaviour. This can be seen most easily as minimising prediction error: we can either change our predictions to explain sensory input through perception. Alternatively, we can actively change sensory input to fulfil our predictions. In active inference, this action is mediated by classical reflex arcs that minimise proprioceptive prediction error created by descending proprioceptive predictions. However, this creates a conflict between action and perception; in that, self-generated movements require predictions to override the sensory evidence that one is not actually moving. However, ignoring sensory evidence means that externally generated sensations will not be perceived. Conversely, attending to (proprioceptive and somatosensory) sensations enables the detection of externally generated events but precludes generation of actions. This conflict can be resolved by attenuating the precision of sensory evidence during movement or, equivalently, attending away from the consequences of self-made acts. We propose that this Bayes optimal withdrawal of precise sensory evidence during movement is the cause of psychophysical sensory attenuation. Furthermore, it explains the force-matching illusion and reproduces empirical results almost exactly. Finally, if attenuation is removed, the force-matching illusion disappears and false (delusional) inferences about agency emerge. This is important, given the negative correlation between sensory attenuation and delusional beliefs in normal subjects--and the reduction in the magnitude of the illusion in schizophrenia. Active inference therefore links the neuromodulatory optimisation of precision to sensory attenuation and illusory phenomena during the attribution of agency in normal subjects. It also provides a functional account of deficits in syndromes characterised by false inference and impaired movement--like schizophrenia and Parkinsonism--syndromes that implicate abnormal modulatory neurotransmission

Seismic risk in Belgium for ordinary buildings: methodological aspects and study cases

peer reviewedBelgium is located in a region in which damaging earthquakes exist. Assessing the risks for the society caused by this seismic activity is complex but useful. We propose in this paper the concept of a general tool for a first level assessment of seismic risks aiming a rapid identification of problematic buildings in a given area. General methodological aspects are presented. For a building, the risk is represented by a volume in a multi-dimensional space. This space is defined by axes representing the main parameters that have an influence on the risk. We are Seismic Risk 2008 - Earthquakes in North-Western Europe especially developing the assessment of the Belgian buildings vulnerability. We also express the importance of including a parameter to consider the specific value of cultural heritage. Then we apply the proposed tool to analyze and compare methods of seismic risk assessment used in Belgium. They differ by the spatial scale of the studied area. Study cases for the whole Belgian Territory and for parts of cities in Liège and Mons (Be) aim also to give an overview of the overall risk in Belgium