ToM tasks, false beliefs and knowledge states. It is worth mentioning that not all deaf children born with hearing parents are linguistically disadvantaged because hearing parents can acquire sign language to communicate with their deaf children. The primary cause of delays in theory of mind is the lack of access to conversations in the environmental, opportunities for incidental learning, and the difficulty in communicating about daily routines. Those create challenges in discussing thoughts, beliefs and intentions among deaf children lacking language. When deaf children are exposed to natural and accessible language from an early age, they do not have delays in theory of mind reasoning and demonstrate a high capacity in understanding and reasoning about others' minds. Evidence have suggested that there is a correlation between having a strong theory of mind and a strong language foundation. It can be argued that the Bi-Bi approach provides deaf children with optimal access to language to support typical socio-emotional development. Deaf children use sign to express themselves, discuss events, ask questions, and refer to things in their settings, just as hearing children use spoken language. The human brain is naturally wired to crave information and constant access to communication, and social settings with accessible language provide that. The earlier that Deaf children have the chance to naturally acquire sign language with constant language input, the better their cognitive and social skills, because they are able to receive information about actions, objects, experiences, and events in time. References Unlocking the Curriculum: Principles for Achieving Access in Deaf Education by Robert E. Johnson, Scott Liddell and Carol Erting, 1989. Bilingual/Bicultural Deaf Education Is Appropriate Mahshie, Shawn Neal. 1995. Educating Deaf Children Bilingually--With Insights and Applications from Sweden and Denmark. National government publication. Washington, D.C.: Pre-College Programs, Gallaudet University J. Clemmons and F. Hoctor (eds.). 1973. Annual International Multilingual, Multicultural Conference: Proceedings (1st, San Diego, California, April 1-5, 1973). Sacramento, CA: Bilingual–Bicultural Task Force Grosjean, Francois. 2001. The Right of the Deaf Child to Grow up Bilingual. Sign Language Studies, Vol. 1, No. 2, pp. 110–114. (PDF) See also Nothing More Nothing Less--A French-Canadian View of Bilingualism and Biculturalism (1967) Deafness Deaf culture Bilingual education Education for the deaf Sign language