I would think that a set of new strategies, particulaly ones that replace old srategies, is how one knows that a new stage has begun.?Piaget did not refer to preconceptual cognition and Intuitive cognition as marking stages of cognitive development, although Intuitive cognition appeared after preconceptual cognition.? Because intuitive cognition did not replace preconceptual cognition, Piaget regarded the two different cognitive styles as phases of the preoperational period--a stage.?Concrete operational cognition--the next stage--replaces preoperational cognition, at least in certain domains.? I have contended and found some empirical support for the idea that when dealing with social problems that really matter to us, almost more than half of us tend to use precoceptual or intuitive cognition, in spite of our being capable of using operational cognition when dealing with social problems that are personally less important to us or when dealing with physical problems. www.devmindbrain.com?&AuthorName=aj malerstein
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