Logique interlocutoire de la résolution en dyade d'un problème d'arithmétique

For about thirty years now, an increasingly large number of robust and incontestable experimental findings have been arguing for the idea that, under certain conditions, interaction promotes the acquisition of cognitive skills, a phenomenon that cannot be clarified by multiplying the number of experiments. To progress, we must have tools designed for studying interaction as it actually affects the interlocutors. This means starting from the "surface" level of interactive dynamics and, step-by-step, constructing the stages of the interaction. This is the aim of interlocutory logic. We use it here to interpret the interlocutory behavior of a child conversing with another child as they solve an arithmetic problem, and to show that the dyadic cosolving process facilitates the acquisition of proportionality. The intersubjective processes that modify cognitions across situations are identified.     

Social interaction and the development of cognitive operations

This paper presents two experiments to support the general hypothesis that the coordination of actions between individuals promotes the acquisition of cognitive coordinations. The first experiment shows that two children, working together, can successfully perform a task involving spatial coordinations; children of the same age, working alone, are not capable of performing the task. The second experiment shows that subjects who did not possess certain cognitive operations involved in Piaget's conservation of liquids task acquire these operations after having actualized them in a social coordination task.