Evolution of semi-Kantian preferences in two-player assortative interactions with complete and incomplete information and plasticity
Laurent Lehmann and
Ingela Alger
Additional contact information
Laurent Lehmann: UNIL - Université de Lausanne = University of Lausanne
Working Papers from HAL
Abstract:
We develop a model for the evolution of preferences guiding behavior in pairwise interactions in groupstructured populations. The model uses the conceptual platform of long-term evolution theory and covers different interaction scenarios, including conditional preference expression upon recognition of interactant's type. We apply the model to the evolution of semi-Kantian preferences at the fitness level, which combine self-interest and a Kantian interest evaluating own behavior in terms of consequences for own fitness if the interactant also adopted this behavior. We look for the convergence stable and uninvadable value of the Kantian coefficient, i.e., the weight attached to the Kantian interest, a quantitative trait varying between zero and one. We consider three scenarios: (a) incomplete information; (b) complete information and incomplete plasticity; and (c) complete information and complete plasticity, where individuals can, not only recognize the type of their interaction partner (complete information), but also conditionally express the Kantian coefficient upon it (complete plasticity). For (a), the Kantian coefficient tends to evolve to equal the coefficient of neutral relatedness between interacting individuals; for (b), it evolves to a value that depends on demographic and interaction assumptions, while for (c) individuals become pure Kantians when interacting with individuals of the same type, while they apply the Kantian coefficient that is uninvadable in a panmictic population under complete information when interacting with individuals with a different type. Overall, our model connects several concepts for analysing the evolution of behavior rules for strategic interactions that have been emphasized in different and sometimes isolated literatures.
Keywords: Evolution of semi-Kantian preferences; Group-structured populations; Fitness; Convergence stability; Uninvadability; Homo moralis (search for similar items in EconPapers)
Date: 2023-06-26
New Economics Papers: this item is included in nep-evo
Note: View the original document on HAL open archive server: https://hal.science/hal-04141955v1
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)
Downloads: (external link)
https://hal.science/hal-04141955v1/document (application/pdf)
Related works:
Journal Article: Evolution of Semi-Kantian Preferences in Two-Player Assortative Interactions with Complete and Incomplete Information and Plasticity (2023) 
Working Paper: Evolution of semi-kantian preferences in two-player assortative interactions with complete and incomplete information and plasticity (2023) 
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:hal:wpaper:hal-04141955
Access Statistics for this paper
More papers in Working Papers from HAL
Bibliographic data for series maintained by CCSD ().