The preoperational stage ranges from about ages 2 to 7. Children in this stage can mentally represent events and objects (the semiotic function), and engage in symbolic play. Their thoughts and communications are typically egocentric. Ego centrism refers to the child's inability to see a situation from another person's point of view. According to Piaget, the egocentric child assumes that other people see, hear, and feel exactly the same as the child does. Piaget wanted to find out at what age children become no longer egocentric. Another key feature which children display during this stage is animism. Animism is the belief that inanimate objects (such as toys and teddy bears) have human feelings and intentions.
Jean Piaget used the three mountains task to test whether children were egocentric. Egocentric children assume that other people will see the same view of the three mountains as they do. According to Piaget, at age 7 thinking is no longer egocentric, as the child can see more than their own point of view.The child sits at a table, presented in front are three mountains. The mountains were different, with snow on top of one, a hut on another and a red cross on top of the other. The child was allowed to walk round the model, to look at it, then sit down at one side. A doll is then placed at various positions of the table. The child is then shown 10 photographs of the mountains taken from different positions, and asked to indicate which showed the dolls view. Piaget assumed that if the child correctly picked out the card showing the doll's view, s/he was not egocentric. Egocentrism would be shown by the child who picked out the card showing the view s/he saw. Four-year-olds always chose a picture which matched their own view, while six-year-olds showed some awareness of alternative perspectives. Only seven- and eight-year-olds consistently chose the correct picture. At age 7, thinking is no longer egocentric as the child can see more than their own point of view.
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