20.500.12556/DKUM-91480 Communicating sentiment and outlook reverses inaction against collective risks Collective risks permeate society, triggering social dilemmas in which working toward a common goal is impeded by selfish interests. One such dilemma is mitigating runaway climate change. To study the social aspects of climate-change mitigation, we organized an experimental game and asked volunteer groups of three different sizes to invest toward a common mitigation goal. If investments reached a preset target, volunteers would avoid all consequences and convert their remaining capital into monetary payouts. In the opposite case, however, volunteers would lose all their capital with 50% probability. The dilemma was, therefore, whether to invest one's own capital or wait for others to step in. We find that communicating sentiment and outlook helps to resolve the dilemma by a fundamental shift in investment patterns. Groups in which communication is allowed invest persistently and hardly ever give up, even when their current investment deficits are substantial. The improved investment patterns are robust to group size, although larger groups are harder to coordinate, as evidenced by their overall lower success frequencies. A clustering algorithm reveals three behavioral types and shows that communication reduces the abundance of the free-riding type. Climate-change mitigation, however, is achieved mainly by cooperator and altruist types stepping up and increasing contributions as the failure looms. Meanwhile, contributions from free riders remain flat throughout the game. This reveals that the mechanisms behind avoiding collective risks depend on an interaction between behavioral type, communication, and timing. social dilemma free riding climate change negotiation group size COVID-19 družbena dilema zastonjkarstvo podnebne spremembe pogajanja velikost skupine COVID-19 true false true National Academy of Sciences Angleški jezik Slovenski jezik Znanstveno delo 2025-01-07 10:20:05 2025-01-07 11:53:26 2025-01-08 03:10:51 0000-00-00 00:00:00 2020 0 0 str. 17650-17655 št. 30 Letn. 117 Jul. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2019-12-23 0000-00-00 2020-07-15 53 25526787 10.1073/pnas.1922345117 1091-6490 Wang-2020-Communicating_sentiment_and_outlook.pdf Wang-2020-Communicating_sentiment_and_outlook.pdf 1 AA0AE8644E46553BFB2B0786811D7D75 7580ef96a5d2b8a00ac24ed3b52ab6553654956770dd3349913615fccc515442 7e7804f0-cce5-11ef-8aab-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=187648 https://doi.org/10.1073/pnas.1922345117 0 86677fa6-cce5-11ef-8aab-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=187649 Fakulteta za naravoslovje in matematiko 0 0 0