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Welcome to the nexus of ethics, psychology, morality, technology, health care, and philosophy
Showing posts with label Co-evolution. Show all posts
Showing posts with label Co-evolution. Show all posts

Wednesday, December 9, 2020

An evolutionary explanation for ineffective altruism

Burum, B., Nowak, M.A. & Hoffman, M. 
Nat Hum Behav (2020). 
https://doi.org/10.1038/s41562-020-00950-4

Abstract

We donate billions to charities each year, yet much of our giving is ineffective. Why are we motivated to give but not to give effectively? Building on evolutionary game theory, we argue that donors evolved (genetically or culturally) to be insensitive to efficacy because people tend not to reward efficacy, as social rewards tend to depend on well-defined and highly observable behaviours. We present five experiments testing key predictions of this account that are difficult to reconcile with alternative accounts based on cognitive or emotional limitations. Namely, we show that donors are more sensitive to efficacy when helping themselves or their families. Moreover, social rewarders don’t condition on efficacy or other difficult-to-observe behaviours, such as the amount donated.

From the Conclusion

This paper has argued that altruism in a behavioural sense is an act that benefits another person, while it is altruistically motivated when the ultimate goal of such act is the welfare of that other. In evolutionary sense, altruism means the sacrifice of fitness for the benefit of other organisms. 

According to the evolutionary theories of altruism, behaviour which promotes the reproductive success of the receiver at the cost of the altruist is favoured by natural selection, because it is either beneficial for the altruist in the long run, or for his genes, or for the group he belongs to. Thus, in line with Trivers, it can be argued that “models that attempt to explain altruistic behaviour in terms of natural selection are models designed to take the altruism out of altruism” (Trivers 1971: 35).

Wednesday, July 6, 2016

Intrinsic honesty and the prevalence of rule violations across societies

Simon Gächter & Jonathan F. Schulz
Nature 531, 496–499 (24 March 2016)
doi:10.1038/nature17160

Abstract

Deception is common in nature and humans are no exception. Modern societies have created institutions to control cheating, but many situations remain where only intrinsic honesty keeps people from cheating and violating rules. Psychological, sociological and economic theories suggest causal pathways to explain how the prevalence of rule violations in people’s social environment, such as corruption, tax evasion or political fraud, can compromise individual intrinsic honesty. Here we present cross-societal experiments from 23 countries around the world that demonstrate a robust link between the prevalence of rule violations and intrinsic honesty. We developed an index of the ‘prevalence of rule violations’ (PRV) based on country-level data from the year 2003 of corruption, tax evasion and fraudulent politics. We measured intrinsic honesty in an anonymous die-rolling experiment5. We conducted the experiments with 2,568 young participants (students) who, due to their young age in 2003, could not have influenced PRV in 2003. We find individual intrinsic honesty is stronger in the subject pools of low PRV countries than those of high PRV countries. The details of lying patterns support psychological theories of honesty. The results are consistent with theories of the cultural co-evolution of institutions and values, and show that weak institutions and cultural legacies that generate rule violations not only have direct adverse economic consequences, but might also impair individual intrinsic honesty that is crucial for the smooth functioning of society.

The article is here.