Criteria for logical formalization

The article addresses two closely related questions: What are the criteria of adequacy of logical formalization of natural language arguments, and what gives logic the authority to decide which arguments are good and which are bad? Our point of departure is the criticism of the conception of logical formalization put forth, in a recent paper, by M. Baumgartner and T. Lampert. We argue that their account of formalization as a kind of semantic analysis brings about more problems than it solves. We also argue that the criteria of adequate formalization need not be based on truth conditions associated with logical formulas; in our view, they are better based on structural (inferential) grounds. We then put forward our own version of the criteria. The upshot of the discussion that follows is that the quest for an adequate formalization in a suitable logical language is best conceived of as the search for a Goodmanian reflective equilibrium.     

Etude des Facteurs psychosociaux,du burnout,de la Vigueur et des troubles musculosquelettiques chez les soignants hospitaliers

Psychosocial factors, the burnout and the musculoskeletal disorders coexist in health professionals at the hospital. From 176 answers to a questionnary built from Karasek (1990) and Siegrist (1996) theories of psychosocial factors, Shirom (2004) of burnout and vigor and finally Kuorinka (1987) of musculoskeletal disorders, we measure and put in link these different aspects, then we propose a predictive model for burnout and pains.     

La mesure du stress en milieu professionnel avec l’échelle de stress perçu (Perceived Stress Scale): pertinence des versions en dix et quatre items

This article presents the psychometric qualities of the Perceived Stress Scale (Cohen, Kamarck, & Mermelstein, 1983) in ten- and four-item version. Our objectives are to verify if we find the main results of the literature as regards the ten-item version and to observe if the psychometric properties of the four-item version are enough good to use this questionnaire. The population of the study consists of 16853 employees working in French large companies. The analyses concern the structure of questionnaires, internal consistency, capacity to discriminate from groups of persons according to gender, age group and professional status, and the convergent validity of both versions. Our results show that 1) we find the main psychometric characteristics of the ten- item version described in the literature and 2) the four-item version presents qualities enough good to be used in an estimation of the perceived stress.     

Understanding communicative intentions and semiotic vehicles by children and chimpanzees

Developmental and comparative studies of the ability to understand communicative intentions using object-choice tasks raise questions concerning the semiotic properties of the communicative signals, and the roles of rearing histories, language and familiarity. We adapted a study by Tomasello, Call, and Gluckman (1997), in which a “helper” indicated the location of a hidden reward to children of three ages (18, 24, and 30 months) and to four chimpanzees, by means of one of four cues: Pointing, Marker, Picture and Replica. For the chimpanzees, we controlled for familiarity by using two helpers, one unfamiliar and one highly familiar. Even 18-months performed well on Pointing and Marker, while only the oldest group clearly succeeded with Picture and Replica. Performance did not correlate with scores for the Swedish Early Communicative Development Inventory (SECDI). While there were no positive results for the chimpanzees on the group level, and no effect of familiarity, two chimpanzees succeeded on Pointing and Marker. Results support proposals of a species difference in understanding communicative intentions, but also highlight the need to distinguish these from the complexity of semiotic vehicles and to consider both factors.     

In the Wake of Violence: Enacting and Witnessing Hope Among People

In the territory of violence and despair, hope is rare. Recent work on hope has shifted attention from hope as a feeling to hope as a practice that people can do together. This case report of a family exposed to domestic violence highlights the role played by a South African police officer in the mother's actions to separate from the context of violence. As a witness to the violence, the police officer acted from an ethic of justice and an ethic of compassion. Outsider witnessing of a counseling session resulted in the recruiting of a community of acknowledgement for the mother, the police officer, and an Assistant Commissioner of Police. Listening carefully and doing hope together gave rise to alliances against practices of violence. As a step of accountability, the authors used reflexive practices to question their responses and to avoid colonizing practices.     

Temporal Aspects of Team Cognition: A Case Study on Concerns Sharing Within Basketball

This case study investigated team cognition in basketball. The focus was on how concerns in a real match situation were shared among teammates and how the sharedness evolved. The activity of five basketball players (M age = 17.60, SD = 0.89) was studied. The data were collected and processed according to a procedure defined for course-of-action analysis (Theureau, 2003). The results indicated that the instances when all the teammates shared the same typical concern were relatively rare, but temporal analysis revealed two kinds of convergence phenomena (simultaneous and progressive). In conclusion, shared understanding emerged within this team as essentially “local sharing of understanding.”     

Dislocation formation in the partially coherent interfaces of an embedded layer in a semi-infinite matrix

The formation of two misfit edge dislocations is theoretically investigated in the interfaces of a layer embedded in a semi-infinite matrix. Assuming the matrix–layer interfaces are partially coherent, the energy variation resulting from the formation of the dislocations from the lateral free surface of the structure has been determined in the shearing stress field due to the partial misfit. The mechanical stability of the structure is analysed with respect to the dislocation formation as a function of the size of the coherent region of the interface and the misfit strain.     

Developmental dissociation in the neural responses to simple multiplication and subtraction problems

Mastering single‐digit arithmetic during school years is commonly thought to depend upon an increasing reliance on verbally memorized facts. An alternative model, however, posits that fluency in single‐digit arithmetic might also be achieved via the increasing use of efficient calculation procedures. To test between these hypotheses, we used a cross‐sectional design to measure the neural activity associated with single‐digit subtraction and multiplication in 34 children from 2nd to 7th grade. The neural correlates of language and numerical processing were also identified in each child via localizer scans. Although multiplication and subtraction were undistinguishable in terms of behavior, we found a striking developmental dissociation in their neural correlates. First, we observed grade‐related increases of activity for multiplication, but not for subtraction, in a language‐related region of the left temporal cortex. Second, we found grade‐related increases of activity for subtraction, but not for multiplication, in a region of the right parietal cortex involved in the procedural manipulation of numerical quantities. The present results suggest that fluency in simple arithmetic in children may be achieved by both increasing reliance on verbal retrieval and by greater use of efficient quantity‐based procedures, depending on the operation.