Children at three levels of conceptual maturity were presented with six dilemmas in order to test the hypothesis that cognitive development predicts concrete behavioral choices whenever individuals are at least as complex as the moral alternatives confronting them. (Author/DB)

Reports on five experiments regarding the ability of children ranging from four to seven years of age to decide when they did not have enough information to select an unfamiliar named picture. Concludes that avoidance of the undecidable was the result of the children's difficulty in understanding undecidability. (GH)

Pairs of elementary school children at different concept development levels were given problems to discuss, in order to examine the prediction, derived from the equilibration model, that when two children holding different beliefs must arrive at a consenus, the child possessing the higher level of cognitive development will prevail over the child…