I. Introduction Lori is four year old, and she is at Piaget’s preoperational stage. According to Piaget’s description of the preoperational stage children, they cannot understand his conservation tasks. This preoperational stage, “children can use representations (mental images, drawings, words, gestures) rather than just motor actions to think about objects and events. Thinking now is faster, more flexible and efficient, and more socially shared. Thinking is limited by egocentrism, a focus on perceptual …showed first 75 words of 1811 total…

…showed last 75 words of 1811 total…changed did not mean the change of the tasks. Based on the experiments, young children like Lori (preoperational stage) do conserve the number and do conserve the liquid very early in life contrary to the Piaget’s theory of stages and his tasks. Bibliography References Flavell, J.M., Miller, P.H., & Miller, S.A. (1993). Cognitive Development. (3rd ed.). Englewood Cliffs, NJ: Prentice-Hall Laura E. Berk. (1999). Infants and Children. (3rd ed.). Needham Heights, MA: Allyn & Bacon