This is a correction to: Pablo Lozano, Alberto Antonioni, Angel Sánchez, On the interplay of hierarchies, conflicts, and cooperation: An experimental approach, PNAS Nexus, Volume 2, Issue 1, January 2023, pgac283, https://doi.org/10.1093/pnasnexus/pgac283
During a retroactive audit conducted by PNAS Nexus, it was discovered that this paper was missing a statement acknowledging compliance with the PNAS Nexus Human and Animal Participants and Clinical Trials policy:
All our experiments were approved by the ethical committee at the Universidad Carlos III de Madrid. Informed consent was obtained from all participants involved in our study, in strict compliance with the principles expressed in the Declaration of Helsinki.
This error has been corrected in the original article.