AUTHOR=Di Domenico Stefano I. , Ryan Richard M. TITLE=Commentary: Primary Emotional Systems and Personality: An Evolutionary Perspective JOURNAL=Frontiers in Psychology VOLUME=8 YEAR=2017 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2017.01414 DOI=10.3389/fpsyg.2017.01414 ISSN=1664-1078