AUTHOR=Garraffa Maria , Guasti Maria Teresa , Marinis Theodoros , Morgan Gary TITLE=Editorial: Language Acquisition in Diverse Linguistic, Social and Cognitive Circumstances JOURNAL=Frontiers in Psychology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2018.01807 DOI=10.3389/fpsyg.2018.01807 ISSN=1664-1078