AUTHOR=Kempe Vera , Brooks Patricia J. TITLE=Linking Adult Second Language Learning and Diachronic Change: A Cautionary Note JOURNAL=Frontiers in Psychology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2018.00480 DOI=10.3389/fpsyg.2018.00480 ISSN=1664-1078