AUTHOR=Padilla Amado M. , Chen Xinjie , Lake J. TITLE=Editorial: Positive Psychology and Learning a Second or Third Language JOURNAL=Frontiers in Psychology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2020.599326 DOI=10.3389/fpsyg.2020.599326 ISSN=1664-1078