John Bonvillian

John D. Bonvillian (1948-2018) was a psychologist and associate professor - emeritus in the Department of Psychology and the Interdepartmental Program in Linguistics at the University of Virginia in Charlottesville, Virginia. He is the principal developer of ''Simplified Signs'', a manual sign communication system designed to be easy to form, easy to understand and easy to remember. He is also known for his research contributions to the study of sign language, child development, psycholinguistics, and language acquisition. Provided by Wikipedia