TY - RPRT TI - Environmental harshness is associated with lower investment in collective actions AU - Lettinga, N. AU - Jacquet, P. O. AU - Andre, J.-B. AU - Baumard, N. AU - Chevallier, C. PY - 2019 DO - 10.1101/663518 UR - https://www.biorxiv.org/content/10.1101/663518v1 ID - 10.1101/663518 ER -