Who is Jean Piaget?

Jean Piaget is a Theorist of Cognative Developmement. He was born on 9th August 1896 He became interested in psychology in 1919 and worked in clinics in Zurich and Paris. He helped the standardisation of intelligence test procedures. It was through these tests that he realised children of the same age give the same answers, he concluded this by saying children are not "little adults" thus giving him evidence to come up with a theory.