This study investigates the procedural learning, retention, and reactivation of temporal sensorimotor sequences in children with and without developmental coordination disorder. Twenty typically-developing children and 12 children with DCD took part in this study. The children were required to tap on a keyboard, synchronizing with auditory or visual stimuli presented as an isochronous temporal sequence, and practice non-isochronous temporal sequences to memorize them. Immediate and delayed retention of the audio-motor and visuo-motor non-isochronous sequences were tested by removing auditory or visual (...) stimuli immediately after practice and after a delay of 2 h. A reactivation test involved reintroducing the auditory and visual stimuli after the delayed recall. Data were computed via circular analyses to obtain asynchrony, the stability of synchronization and errors. Firstly, an overall deficit in synchronization with both auditory and visual isochronous stimuli was observed in DCD children compared to TD children. During practice, further improvements were found for the audio-motor non-isochronous sequence compared to the visuo-motor non-isochronous sequence in both TD children and children with DCD. However, a drastic increase in errors occurred in children with DCD during immediate retention as soon as the auditory stimuli were removed. Reintroducing auditory stimuli decreased errors in the audio-motor sequence for children with DCD. Such changes were not seen for the visuo-motor non-isochronous sequence, which was equally learned, retained and reactivated in DCD and TD children. All these results suggest that TD children benefit from both auditory and visual stimuli to memorize the sequence, whereas children with DCD seem to present a deficit in integrating an audio-motor sequence in their memory. The immediate effect of reactivation suggests a specific dependency on auditory information in DCD. Contrary to the audio-motor sequence, the visuo-motor sequence was both learned and retained in children with DCD. This suggests that visual stimuli could be the best information for memorizing a temporal sequence in DCD. All these results are discussed in terms of a specific audio-motor coupling deficit in DCD. (shrink)

L'auteur, un philosophe s'inspirant de Socrate, livre ses réflexions en rapport avec 19 sujets d'actualité dont le mariage homosexuel, l'éradication de la pauvreté, les droits des animaux, la peine de mort, l'insémination des célibataires, le droit à la poitrine nue en public, la "mort fine" de quelques régions du Québec, etc. [SDM].

The present study investigates procedural learning of motor sequences in children with developmental coordination disorder and/or developmental dyslexia, typically-developing children and healthy adults with a special emphasis on the role of the nature of stimuli and the neuropsychological functions associated to final performance of the sequence. Seventy children and ten adults participated in this study and were separated in five experimental groups: TD, DCD, DD, and DCD + DD children and adults. Procedural learning was assessed with a serial reaction time (...) task that required to tap on a specific key as accurately and quickly as possible when stimuli appeared on the screen. Three types of stimuli were proposed as cues: the classical version of the SRTT with 4 squares aligned horizontally on the screen, giving visuospatial cues, and two modified versions, with 4 letters aligned horizontally on the screen and letters at the center of the screen. Reaction times during the repeated and random blocks allowed assessing three phases of learning: global learning, specific learning and retention of the sequence. Learning was considered as completed when RT evolved significantly in the three phases. Neuropsychological assessment involved, among other functions, memory and attentional functions. Our main result was that learning and retention were not influenced by the available cues in adults whereas learning improved with specific cues in children with or without neurodevelopmental disorders. More precisely, learning was not completed with L cues in children with neurodevelopmental disorders. For children with DD, learning was completed with the VS and VS + L cues whereas for children with DCD, learning was completed with combined VS + L cues. Comorbidity between DD and DCD had no more impact on procedural learning than DCD alone. These results suggest that learning depends on the nature of cues available during practice and that cues allowing learning and retention depend on the type of disorder. Moreover, selective attention was correlated with RT during retention, suggesting that this neuropsychological function is important for procedural learning whatever the available cues. (shrink)

"Apprendre, qu'est-ce que cela veut dire? Qu'est-ce que cela suppose? Par quelles voies est-ce que cela passe? A ces questions, l'école contemporaine apporte une réponse catégorique : l'école traditionnelle s'est trompée, elle a voulu transmettre des connaissances détenues par un maître en les inculquant à des élèves passifs. Cette pédagogie de l'imposition ne marche pas. Il faut lui substituer une pédagogie active faisant de l'enfant l'acteur de la construction de ses savoirs. Nous sommes au moment où cette réponse se révèle (...) aussi fausse, dans sa demi-vérité, que la philosophie antérieure. Il en résulte que l'école aujourd'hui est plongée dans une incertitude complète sur la nature de l'opération qu'il lui revient d'effectuer. Tout est à reprendre, à commencer par l'opposition supposée entre activité de l'élève et transmission du savoir. C'est ce problème fondamental que ce livre s'efforce d'éclairer." [Extrait de la 4e de couv.]. (shrink)

Les liens intimes ont été soumis, particulièrement en France et au Québec, à de profondes transformations depuis l’entrée en scène de la modernité. Pour certains commentateurs, ces modifications témoignent d’une crise de la société, voire d’un effritement du lien social, qui aurait maintenant atteint ces lieux, jadis garants de la solidarité et de la morale. Pour ces mêmes observateurs, la sortie de crise se lit également dans l’urgence d’une reconstruction normative et transcendante de la société. Les auteurs désirent offrir ici (...) une lecture alternative à ces approches qui leur apparaissent décrire la société moderne dans les termes de la tradition. Ils proposent d’analyser les transformations des liens intimes à l’aune du passage de la société traditionnelle à la société moderne, c’est-à-dire du changement dans le processus de différenciation de la société. Les auteurs font l’hypothèse que la description des liens intimes en termes de crise est la conséquence d’une société moderne différenciée fonctionnellement, autrement dit une société sans centre, polycontextuelle et complexe. Dans ce contexte, les individus se voient dégagés des traditions qui les confinaient à des rôles fixes, de sorte qu’émergent une diversification et une individualisation des trajectoires de vie intime. (shrink)