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biography
name: Jones, Mary Cover

sex: female
lived: (1896–1987)

biography: Psychologist, born in Johnstown, Pennsylvania, USA. She studied at Vassar and Columbia University, where she met fellow psychologist Harold Ellis Jones, and they married in 1920. She did important research in developmental psychology and worked with behaviourist John B Watson. In 1924 she published a landmark study on deconditioning fear. With her husband, she conducted research at the University of California, Berkeley (from 1927) and organized the long-term Oakland Growth Study on adolescents.