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Piaget (1896-1980)

 a Swiss developmental psychologist whose work has had a huge influenceon psychology andeducation. Piaget defined four sequential stages of cognitive development; the sensorimotor, preoperational, concreteoperational and formal operational stages, each characterised by different ways of thinking.Through development a child develops ?a target="_blank"href="https

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Psychology term of the day

June 21st 2021

pervasive developmentdisorder (PDD)

refers to a group of five disorders characterised by delays inthe development of multiple basic functions includingsocialisation andcommunication. The most commonly known PDD is autism.