@ARTICLE{Latkowska_Jolanta_On_2001, author={Latkowska, Jolanta}, number={vol. 22}, journal={LINGUISTICA SILESIANA}, pages={169-175}, howpublished={online}, year={2001}, publisher={Polska Akademia Nauk • Oddział w Katowicach}, abstract={This paper deals with the extent to which a high level of proficiency in the foreign language ( L2 ) affects the knowledge and use of the mother tongue (LI). There is strong evidence that in a bilingual context extended exposure to the L2 results in the weakening of LI skills, which is often referred to as LI attrition. It consists in a restructuring of the LI that involves mainly transfer and simplification. The paper discusses both processes in the light of research into LI competence developed by Polish university teachers and students of English as a foreign language.}, type={Article}, title={On the weakening of LI skills in proficient bilinguals}, URL={http://ochroma.man.poznan.pl/Content/133009/PDF/13_SILESIANA_22_Latkowska_WEAKENING.pdf}, }