Numerical and nonnumerical estimation in children with and without mathematical learning disabilities

There are currently multiple explanations for mathematical learning disabilities (MLD). The present study focused on those assuming that MLD are due to a basic numerical deficit affecting the ability to represent and to manipulate number magnitude ( Butterworth, 1999 , 2005 ; A. J. Wilson & Dehaene, 2007 ) and/or to access that number magnitude representation from numerical symbols ( Rousselle & No?l, 2007 ). The present study provides an original contribution to this issue by testing MLD children (carefully selected on the basis of preserved abilities in other domains) on numerical estimation tasks with contrasting symbolic (Arabic numerals) and nonsymbolic (collection of dots) numbers used as input or output. MLD children performed consistently less accurately than control children on all the estimation tasks. However, MLD children were even weaker when the task involved the mapping between symbolic and nonsymbolic numbers than when the task required a mapping between two nonsymbolic numerical formats. Moreover, in the estimation of nonsymbolic numerosities, MLD children relied more than control children on perceptual cues such as the cumulative area of the dots. Finally, the task requiring a mapping from a nonsymbolic format to a symbolic format was the best predictor of MLD. In order to explain these present results, as well as those reported in the literature, we propose that the impoverished number magnitude representation of MLD children may arise from an initial mapping deficit between number symbols and that magnitude representation.     

Understanding team coordination in doubles table tennis: Joint analysis of first- and third-person data

ObjectivesThis study sought to determine whether combining first- and third-person methodologies would provide insight into team coordination.Design and methodsWe studied the activity of a table tennis doubles team during an official match. We collected and processed the verbal data according to a procedure defined for course-of-experience analysis, but we also included a video-based field study of the partners' interactions during the breaks between points. We then conducted a joint analysis of the two players' lived experience and behaviors during these short breaks.ResultsThe results showed both the difficulties and the empirical richness of this approach. For example, the joint analysis of first- and third-person data on doubles table tennis revealed how the players' behaviors during the short breaks between points had a key role in shaping the understanding shared by the two partners.ConclusionsThe combination of first- and third-person data seems to be a promising approach for improving our understanding of the coordination processes in sports teams. In our study, the joint analysis of these data enabled us to describe in great detail how the respective behaviors of the partners contributed to the dynamics of constructing/deconstructing shared understanding between them.     

Changes in Sensation Seeking and Need for Structure Before and After a Combat Deployment

In this study, soldiers' adaptation with the situational demands on combat deployment is explored. Certain changes on the level of two needs-based personality characteristics, Sensation Seeking (SS) and Need for Structure (NS) take place across deployment: soldiers who are lower in SS were more inclined to seek for sensations after deployment, and soldiers at the extremes of the NS dimension, modified their behavioral tendencies after deployment towards a moderate level. According to our findings, these changes suggest at least temporal characteristic adaptations with certain environmental demands. We discuss the implications of these findings for research and practice.     

Passion at work and burnout: A two-study test of the mediating role of flow experiences

Vallerand et al. (2003) developed a Dualistic Model of Passion where two types of passion are proposed: harmonious and obsessive passion. They generally predict adaptive and less adaptive outcomes, respectively. We hypothesized that the type of passion one holds towards his/her work should influence one's experience of burnout symptoms. We hypothesized that a harmonious passion for work would lead to low levels of burnout through its facilitation of frequent flow experiences, whereas an obsessive passion would directly lead to high levels of burnout. Two studies (one cross-sectional and one prospective) were conducted and results of structural equation modelling analyses supported the hypotheses.     

Autobiographical Memory, Self, and Stress-Related Psychiatric Disorders: Which Implications in Cancer Patients?

Autobiographical memory refers to information and memories of personal life events, accumulated since childhood, which enable the construction of a feeling of identity and continuity. Autobiographical memory retrieval is a dynamic and reconstructive process, as mental representations change with the passage of time. This flexible aspect of memory is linked to one’s changing self and aspirations over time, that evolve according to our personal status and environment. Hence, any breakdown in the continuity of life involves a distortion of memory. Such distortions can be observed in stress-related psychiatric disorders, such as major depression or post-traumatic stress disorder, where autobiographical memory retrieval is characterized by overgenerality (i.e., the tendency to recall generic memories rather than specific events in response to cue words). Such memory disorders can be observed at different degrees in cancer patients. We will report studies focusing on the above-mentioned psychiatric disorders and cancer, and will attempt to establish a relation with autobiographical memory disturbances. The better understanding of such memory deficits could permit new pathophysiological hypotheses to emerge. Recommendations for future research that will enhance understanding of the factors that contribute to autobiographical memory in cancer are suggested.     

Team Coordination in Basketball: Description of the Cognitive Connections Among Teammates

This study investigated team coordination in basketball using the course-of-action theoretical framework. The focus was on how the players were connected with their teammates' activities. The activity of five French basketball players (17.60 ± .89 years) was studied during an official match. The data were collected and processed according to a procedure defined for course-of-action analysis. The results were used to characterize the coordination modes among players and the team coordination network that was built. The processes that underlie team coordination are discussed (i.e., mutuality and awareness), and some directions for practical applications are addressed.     

Evidence Supporting the Importance of Peripheral Visual Information for the Directional Control of Aiming Movement

The focus of the present study was on determining whether the high level of directional accuracy found in aiming studies in which the subjects can see their hand in the visual periphery supports the existence of a kinetic visual channel or, rather, the advantage of binocular over monocular vision for movement directional control. The limits of this kinetic visual channel were also explored. The results of the 1st experiment indicated that seeing one's hand in the visual periphery is sufficient to ensure optimal directional aiming accuracy. Further, no differences in aiming accuracy were noted between monocular and binocular vision. These results supported the existence of a visual kinetic channel. In the 2nd experiment, whether this kinetic visual channel would operate with movements slower (55°/s) than those usually used in studies that had proved its existence (over 110°/s) was determined. The results indicated that this visual kinetic channel was operative even at relatively slow movement velocities. Central vision of the hand seemed to be used for on-line directional control of relatively slow movements.     

I'm free but I'll comply with your request: generalization and multidimensional effects of the “evoking freedom” technique

The “evoking freedom” technique is a verbal compliance procedure that solicits someone to comply with a request by simply telling them they are free to accept or to refuse the request. The measure of the efficiency of this technique on compliance with large samples and the evaluation of its influence on various requests was tested in the first set of experiments. This technique was found to be efficient in increasing the number of people who agreed to give money to a requester, the number of smokers who agreed to give a cigarette, passersby who agreed to respond to a survey, and homeowners who agreed to buy pancakes. In the second set of experiments in which the mode of interaction between the requester and the person solicited was tested, the “evoking freedom” technique was found to be associated with greater compliance with a request addressed by mail and through face‐to‐face, phone‐to‐phone, or computer‐mediated interaction. The third set of experiments tested the effect of semantic variations of the “evoking freedom” technique and the weight of the repetition of the semantic evocation of freedom. These later experiments that used various phrases evoking the freedom to comply were found to be associated with greater compliance. Moreover, a double evocation of freedom was associated with even greater compliance than a single evocation. The importance of this technique for commitment communication is discussed.     

Antismoking norm and smokers' antismoking attitudes: The interplay between personal and group‐based self‐esteem

Scientific discoveries about the dangers of smoking and antismoking actions carried out in Western countries over recent decades have progressively helped create an antismoking social norm. Nevertheless, many smokers still refuse to quit. We conducted two studies to investigate smokers' resistance to this norm as a function of their personal self‐esteem (PSE) and group‐based self‐esteem (GBSE). An initial correlational study assessed smokers' perception of the antismoking social norm, their PSE, and their antismoking attitudes. Smokers with low PSE had lower antismoking attitudes than those with high PSE when the antismoking norm was strong. The second study assessed GBSE (i.e., smokers' satisfaction as smokers) and manipulated both the strength of the antismoking norm and PSE (i.e., focus on personal weaknesses or strengths). Smokers with low PSE displayed the lowest antismoking attitudes when the antismoking norm was strong and their GBSE was high. These results show that the antismoking norm can produce paradoxical effects and suggest that the way individuals cope with stigmatization is affected by the interplay between PSE and GBSE. Copyright © 2013 John Wiley & Sons, Ltd.