It is widely acknowledged that many deaf children have difficulties in their language and literacy development due to challenges accessing the spoken language upon which reading is based. Since sign languages bypass the impaired auditory channel, proficient deaf signers may have more extensive language systems than those available to non-signing deaf individuals. However, this does not in itself help the process of reading, since the written script is based on a completely different language system to sign, i.e. speech. Whereas hearing children (and indeed oral deaf children) first learn English as a spoken language, then transfer skills and knowledge from spoken English to its written form, BSL users must acquire a new orthographical code and also a different language, since there is no written equivalent of BSL. Although theories of bilingualism suggest that skills acquired in a first (spoken) language transfer to the acquisition of a second (spoken) language (Cummins 1989, 1991), there is no reason why transfer should occur when the first language is sign and in a completely different modality to the second language, i.e. written English (Mayer & Wells, 1996). Yet, there is some evidence that deaf children with stronger sign language skills (Strong & Prinz, 2000), broader vocabularies (Kyle & Harris, 2010, 2011) and who are native signers from birth achieve better reading outcomes (Stuckless & Birch, 1966; Meadow, 1968; Kusche, Greenberg, & Garfield, 1983; Strong & Prinz, 1997, 2000). Most studies to date have been based exclusively on children in deaf families and may not therefore fully represent all deaf signing children. Nonetheless, such achievements suggest that, without the direct letter to sound correspondences, deaf signers may access literacy in alternative ways (Hermans et al., 2008; Haptonstall-Nykaza & Schick (2007). In a recently completed UK study, we investigated reading in a large sample of oral deaf children age 10-11 years based on scores obtained from standardised measures of language, reading and phonological skills. Initial findings suggest the key role of vocabulary in acquiring literacy. We are now studying a sample of same-aged deaf signing children using the same/comparable measures adapted for BSL users. This paper will report preliminary findings for the deaf signing children in comparison with our oral deaf group. In this paper we focus predominately on findings from the language and reading measures and address the following questions: • • • Given that signing is more accessible to deaf children than spoken language, do deaf children who sign have larger vocabularies than those who speak? Do signing children with larger vocabularies and better language levels in BSL have better reading levels? How does vocabulary relate to phonological skills in signing and oral deaf children? References Cummins, J. (1989) Language and literacy acquisition in bilingual contexts. Journal of Multilingual and Multicultural Development. 10 (1), 17-31. DOI:10.1080/01434632.1989.9994360 Cummins, J. 1991. Interdependence of first- and second-language proficiency in bilingual children. In E. Bialystok (Ed.) Language processing in bilingual children. Cambridge: Cambridge University Press. 70-89. Haptonstall-Nykaza, T. S., & Schick, B. (2007). 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(1968) Early manual communication in relation to the deaf child's intellectual, social, and communicative functioning. American Annals of the Deaf 113, 29–41. Kusche, C.A., Greenberg, M.T., Garfield, T.S. (1983) Nonverbal intelligence and verbal achievement in deaf adolescents: An examination of heredity and environment. American Annals of the Deaf 128, 458–466. Strong, M., Prinz, P.M. (1997) A study of the relationship between ASL and English literacy. Journal of Deaf Studies and Deaf Education 2(1), 37–46. Strong, M. & Prinz, P.M. (2000) Is American Sign Language Skill Related to English Literacy? In Language Acquisition by Eye (eds) Chamberlain, C., Morford, J. & Mayberry, R. Lawrence Erlbaum Associates, Hillsdale NJ, 131– 141. Stuckless, E.R. & Birch, J.W. (1966) The influence of early manual communication on the linguistic development of deaf children. American Annals of the Deaf 111, 499–504.