In a series of experimental studies M. Lang with R. Chvaja and B. G. Purzycki demonstrated that costly signals assort more cooperative participants who create ultra-cooperative, successful groups.
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How do individuals seek reliable partners in intergroup conflicts? The authors simulated intergroup conflict using economic games with US participants in four consecutive studies to examine the role of costly commitment signals in the choice of partners during group formation for the purpose of intergorup competiiton. The results showed that only extreme cooperators used very costly signals and created ultra-cooperative groups, willing to harm other groups to benefit their own.
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In a paper published in Religion, Brain & Behavior, J. Nenadalová & D. Řezníček demonstrated that some study participants in a sensory-deprived laboratory environment sensed the presence of another person. This feeling was mostly associated with perceived uncertainty and only somewhat associated with psychological dispositions.
In a cross-national investigation published in the Personality and Social Psychology Bulletin, F. M. Saxler with LEVYNA’s E. Kundtová Klocová and other colleagues show that the COVID-19 pandemic affected young people’s normative beliefs about unpaid domestic work; and that this effect is stronger in countries with greater gender inequality.
