TY - BOOK ID - 28480224 TI - The Development of second language proficiency AU - Harley, Birgit AU - Ontario Institute for Studies in Education PY - 1990 SN - 0521387957 0521384109 1139524569 9780521387958 9780521384100 9781139524568 PB - Cambridge Cambridge University Press DB - UniCat KW - --Study and teaching KW - Didactics of languages KW - Language and languages KW - Second language acquisition KW - Bilingualism KW - Bilinguisme KW - --Congrès KW - --Langues KW - --Enseignement KW - --Langage KW - --Acquisition KW - Congresses KW - Langage et langues KW - Langue seconde KW - Study and teaching KW - Congrès KW - Etude et enseignement KW - Acquisition KW - Language and languages - Study and teaching - Congresses KW - Second language acquisition - Congresses KW - Bilingualism - Congresses KW - Congrès KW - Langues KW - Enseignement KW - Langage KW - Congresses. UR - https://www.unicat.be/uniCat?func=search&query=sysid:28480224 AB - This text presents the findings of a major investigation of second language proficiency in various groups of school-aged learners. It invites a frank appraisal of the research from an outside panel of experts. The theoretical and practical implications of the study are the subject of a lively debate focused on three main research issues: the nature of second language proficiency, the impact of classroom treatment on second language learning, and the role of social and individual factors in bilingual development. This original collection of articles will be of interest to all those concerned with policy and practice in second language education. ER -