Andreas Demetriou proposed a modification of this man's theory which accounts for changes inthe speed of processing.
Andreas Demetriou proposed a modification of this man's theory which accounts for changes inthe speed of processing. This man conducted an experiment in which a subject was shown views of a mountain and then asked what view a doll would see, demonstrating egocentrism. In addition to thatexperiment with Barbel Inhelder, this man used an experiment in which (*) water in one beaker is putinto a narrower beaker, causing children to think that there was more water to demonstrate children'slack of understanding of conservation. His best-known theory describes the acquisition of language aspart of the preoperational stage. For 10 points, name this Swiss child psychologist who described anumber of developmental stages in children.
Andreas Demetriou proposed a modification of this man's theory which accounts for changes inthe speed of processing.
 Jean Piaget