AUTHOR=Colombo Michael , Scarf Damian , Zentall Tom TITLE=Editorial: The Comparative Psychology of Intelligence: Macphail Revisited JOURNAL=Frontiers in Psychology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.648782 DOI=10.3389/fpsyg.2021.648782 ISSN=1664-1078