Since the 1960s/1970s, Blissymbols have become popular as a method to teach disabled people to communicate. In 1971 Shirley McNaughton started a pioneer program at the Ontario Crippled Children's Centre (OCCC), aimed at children with cerebral palsy, from the approach of augmentative and alternative communication (AAC). According to Arika Okrent, Bliss used to complain about the way the teachers at the OCCC were using the symbols, in relation with the proportions of the symbols and other questions: for example, they used "fancy" terms like "nouns" and "verbs", to describe what Bliss called "things" and "actions".[5] (2009, p. 173-4).