AUTHOR=Pei Ran , Zhang Zhiwu TITLE=Researching language learning motivation: A concise guide JOURNAL=Frontiers in Psychology VOLUME=13 YEAR=2023 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2022.1107594 DOI=10.3389/fpsyg.2022.1107594 ISSN=1664-1078