PERSON
Eleanor J. Gibson
American developmental psychologist (1910–2002), J.J. Gibson's lifelong collaborator and independent intellectual force, whose work on perceptual learning and infant development established the empirical foundation on which ecological psychology's account of differentiation rests.
Eleanor Jack Gibson, known to colleagues as Jackie, was one of the most consequential experimental psychologists of the twentieth century. Her career — conducted largely under the structural constraints that limited women academics of her generation, including Yale's refusal to hire her as faculty alongside her husband — produced the empirical foundation for the Gibsons' joint account of perceptual differentiation. Her 1960 visual cliff experiments with Richard Walk, demonstrating that infants reliably refuse to crawl over apparent drops, became one of the most famous demonstrations in developmental psychology. Her 1969 masterwork Principles of Perceptual Learning and Development systematized the differentiation account that her husband's ecological framework required but did not itself demonstrate empirically. The National Medal of Science she received in 1992 recognized what the discipline had long acknowledged: the Gibsonian revolution was as much hers as his, and the frameworks now applied to AI-era questions about the education of attention rest on her empirical work as much as on his theoretical architecture.