AUTHOR=Majolo Bonaventura , Romero Teresa TITLE=Commentary: No unique effect of intergroup competition on cooperation: non-competitive thresholds are as effective as competition between groups for increasing human cooperative behavior JOURNAL=Frontiers in Psychology VOLUME=8 YEAR=2018 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2017.02322 DOI=10.3389/fpsyg.2017.02322 ISSN=1664-1078