Joyce Whittington studied Mathematics at London University. After graduation she worked with Professor Gabor at Imperial college before embarking on a research MSc in Mathematics. Married in 1963, she took several research and teaching posts as a mathematician. After the birth of her first child, she studied for a Psychology BA with the Open University before obtaining a PhD for a thesis on Dyscalculia. She moved back to Cambridge in 1988, where she was employed as a psychologist first by the MRC (on Human-Computer Interaction) then by Cambridge University (on the Health and Lifestyle Survey). She then moved to the Department of Developmental Psychiatry to collaborate with Tony Holland on the population study of Prader-Willi syndrome (PWS) and on subsequent work on PWS.