Refereoces / 230
VELLS,G. <1981) Learning through interaction. Cambridge, C.U.P.
VELLS1G. <1983a) Success and failure in language learning: some findings
from the Bristol study. B.A.A.L. Iewsletter, Sept.83.
VELLS1G. <1983b> Styles of interaction and opportunities for learning.
Paper presented at the 3rd language and Language Acquisition
Conference, 'Pragmatics and Education' Gent, Belgium, March 83.
VELLS,G. <1985) Language development in the pre-school years. Cambridge,
C.U.P.
VELLS,G. <1986) The language experience of five-year-old children at home
and at school. In: COOK-GUMPERZtJ. <Ed.)
VELLS,G. and GUTFREUIDtM. <1984) The conversational requirements for
language learning. Paper presented at the meeting on 'Language
Development and Communication Problems of the Handicapped',
Oxford, Jan.84.
VELLS,C.G∙and MOITGOMERYtM. <1981> Adult-child interaction at home and at
school.In: FREICHtP. and MacLUREtM. <Eds.) Adult-Child conversation.
London, Croom t⅛lm.
VELLS,G. and ROBIISOI,V.P. <1982) The role of adult speech in language
development. In: FRAZER1C. and SCHERER,K. (Eds.) Advances in the
social psychology of language. Cambridge, C.U.P.
VE⅛ΓH,P. <1981) The concept of 'relevance' in conversational analysis. In:
VERTH1P <Ed.) Conversation and Discourse. London, Croom Helm.
VERTSCH,y. <1979) From social Interaction to higher psychological
processes. A clarification and application of Vygotsky's theory.
Human Development 22:1-22.
VERTSCHTy. <1983> The role of semlosis in L.S.Vygotsk∣'s theory of human
cognition. In: BAII,B.<Ed.>
VERTSCH,J.V. <1985a) <Ed.) Culture, Communication and cognition: Vygo-
tsklan perspectives. Cambridge, C U.P.
VERTSCH,J.V.<1985b> Vygotsky and the social formation of mind. Cambridge,
Harvard University Press.
VERTSCH,J.V. and SAMMARCO,J.G. <1985) Social precursors to individual
cognitive functioning: the problems of units of analysis. In:
HIIDE,R.A.; PERRET-CLERMOIT,A.I. and STEvEISOI-HIIDEtJ. <Eds.)
Social relationships and cognitive development. Oxford, Clarendon
Press.
VIDDOVSOI,H.G. <1978) Teaching language as communication. Oxford. Oxford
UIiversity Press.