Acknowledgements
This research was supported in part by ESRC grant RES-062-23-0175 on Cognitive effects of bilingualism across the lifespan and by ESRC/HEFCW grant RES-535-30-0061 for the ESRC Centre for Research on Bilingualism in Theory and Practice, whose support is gratefully acknowledged. I wish to send my extreme gratitude to all of the reviewers who assisted in the review of the articles submitted for this special issue. Their work added immeasurably, through their constructive feedback to the authors, to the quality of the work presented here. I am grateful also to Colin Baker for taking on the editing role for the last article, by myself and colleagues, and for his unfailing support and good humor in the preparation of this special issue.