AUTHOR=Matthews Gerald TITLE=A Grand Challenge for Personality and Social Psychology: Competition, Cooperation, or Co-existence? JOURNAL=Frontiers in Psychology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2020.01570 DOI=10.3389/fpsyg.2020.01570 ISSN=1664-1078