Research on first language attrition of morphosyntax in adult bilinguals

This article presents a selective review of previous research findings on first language (L1) attrition. The review is intentionally limited in scope as it only discusses studies on morphosyntactic attrition in the L I grammar of adult bilinguals. To this end - and in order to present the most current line of research in this field - I first report on studies that appeared in three recent collections of papers on L1 change or attrition. I then discuss findings reported in these three volumes as well as those reported elsewhere, in order to identify morphosyntactic features that are more vulnerable to change due to L2 interference.