Jerome Bruner was an American psychologist born in 1915 in New York. He received his bachelor's degree from Duke University in 1937 and his master's and doctorate from Harvard University in 1939 and 1941 respectively. Bruner was a leading proponent of constructivism in education, which is based on experimental learning through real-life experiences to build knowledge. He emphasized that learning is an active process where learners construct new ideas based on prior knowledge.