AUTHOR=Kim Mi Jeong , Wang Xiangyu , Kim Inhan TITLE=Editorial: Towards Users' Optimal and Pleasurable Experience in Smart Environments JOURNAL=Frontiers in Psychology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2020.583663 DOI=10.3389/fpsyg.2020.583663 ISSN=1664-1078