Hébert-Dufresne Laurent, Waring Timothy M, St-Onge Guillaume, Niles Meredith T, Kati Corlew Laura, Dube Matthew P, Miller Stephanie J, Gotelli Nicholas J, McGill Brian J
Department of Computer Science, University of Vermont, Burlington VT, USA.
Vermont Complex Systems Center, University of Vermont, Burlington VT, USA.
R Soc Open Sci. 2022 Mar 23;9(3):211743. doi: 10.1098/rsos.211743. eCollection 2022 Mar.
Social change in any society entails changes in both behaviours and institutions. We model a group-structured society in which the transmission of individual behaviour occurs in parallel with the selection of group-level institutions. We consider a cooperative behaviour that generates collective benefits for groups but does not spread between individuals on its own. Groups exhibit institutions that increase the diffusion of the behaviour within the group, but also incur a group cost. Groups adopt institutions in proportion to their fitness. Finally, the behaviour may also spread globally. We find that behaviour and institutions can be mutually reinforcing. But the model also generates behavioural source-sink dynamics when behaviour generated in institutionalized groups spreads to non-institutionalized groups and boosts their fitness. Consequently, the global diffusion of group-beneficial behaviour creates a pattern of institutional free-riding that limits the evolution of group-beneficial institutions. Our model suggests that, in a group-structured society, large-scale beneficial social change can be best achieved when the relevant behaviour and institutions remain correlated.
任何社会的社会变革都需要行为和制度的改变。我们构建了一个群体结构社会模型，其中个体行为的传播与群体层面制度的选择同时发生。我们考虑一种合作行为，这种行为为群体带来集体利益，但不会自行在个体之间传播。群体展现出一些制度，这些制度增加了行为在群体内的传播，但也会产生群体成本。群体根据其适应性来采用制度。最后，这种行为也可能在全球范围内传播。我们发现行为和制度可以相互强化。但当制度化群体中产生的行为传播到非制度化群体并提高其适应性时，该模型还会产生行为源 - 汇动态。因此，有利于群体的行为的全球传播会形成一种制度搭便车模式，限制了有利于群体的制度的演变。我们的模型表明，在一个群体结构社会中，当相关行为和制度保持关联时，大规模有益的社会变革最有可能实现。
