The early development of language is briefly outlined and some of the problems caused by visual handicap are identified. A system of tactile communication symbols is described which may be of help to severely handicapped children unable to speak because of physical or sensory impairments in addition to blindness.
Brown R., A first language - the early stages, Geo. Allen & Unwin , 1973.
3.
Chomsky N., Aspects of theory of syntax, MIT, 1965 .
4.
MacDonald J.D. & Blott J.P., Environmental language intervention: the rationele for a diagnostic and training strategy through rules, context and generalization, Jour. Speech & Hearing Dis., 39, pp. 244-256, 1974.
5.
MacDonald J.D., et al., An experimental parent-assisted program for pre-school language delayed children, Jour. Speech & Hearing Dis., 39, pp. 394-415, 1974.
6.
McDonald Eugene T., Teaching and using Blisymbolics, Blissymbolics Communication Institute, Canada, 1980.
7.
Paget-Gorman, Paget-GormanSign System (6th edition), Assn. for Experment in Deaf Education, Ltd., 1976.
8.
Premack A.J. & Premack D., Teaching language to an ape, Scientific American, 227, No. 4, pp. 92-99, 1972.
