Abstract: | The purpose of this study was to examine under which social conditions cognitive development of children at the same cognitive development level will be stimulated. One hundred and two children (mean age 7.8 years), understanding conversation of area quantity, but not yet able to grasp the compensatory relationships between the dimensions of length and width of an area, participated in two experimental conditions in which the developmental processes of socio-cognitive conflict and coordination were evoked. The results indicate that the resolution of the socio-cognitive conflict and the occurence of coordination is higher in individual than in dyadic conditions, and higher in (inter-group) competitive and (adult) supervised conditions than in conditions were task execution was left to the spontaneous initiative of the children themselves. Cognitive developmental progress generalized from the area concept to liquid and mass concepts. |