Moral emotions (i.e. guilt, shame) and interpersonal processes such as fairness have been theorised to facilitate cooperation within society. However, empirical tests to support this association have yielded inconsistent results. The present research investigated whether guilt and shame have an impact on fairness-related decision-making and reciprocity-driven cooperation. College students (N = 94) were assigned to one of three experimental conditions (Guilt vs. Shame vs. Control) and instructed to complete an iterated Ultimatum Game against two anonymous partners. We manipulated social context (...) so that one partner would appear as predominantly fair, and the other as predominantly unfair. For guilt, we found that participants (assigned as proposers) reciprocated fair partners with significantly larger amounts of money (i.e. positive reciprocity). For shame, we found that participants had higher rejection rates of unfair splits, and subsequently offered less money to unfair partners (i.e. negative reciprocity). We argue that both guilt and shame benefit fairness-related judgments, guilt by endorsing fairness, and shame by punishing unfairness. Our results also show that guilt and shame benefit reciprocity-driven cooperation, although they do so via different pathways. Our findings suggest that guilt promotes cooperation via positive reciprocity, whereas shame stabilises cooperation via negative reciprocity. (shrink)

Transhumanism at once embodies our most modern thinking and our biggest longstanding problems. Transhumanism aims to enhance human core capacities: health-span, lifespan, and cognition. The thesis answers the following ethical challenges arising from transhumanist aims. First, whether transhumanism can be an ethical endeavour if it relies on authoritarian intervention by governments and governing bodies to change, generate and enforce behaviour, or to influence and enforce the uptake of medical procedures. Second, the thesis answers the challenge that it is unethical deliberately (...) to encourage the uptake of and pursuit of medical transhumanism given the extent of accessibility and distributive issues that remain unresolved in existing medicine. Finally, the thesis addresses a particular mental health crisis that is often predicted for transhuman beings, namely loss of meaning from loss of death and vulnerability, resulting in widespread loss of social cohesion. The thesis argues that the right solution to the first two problems is a libertarian paternalist approach, viz. nudging, and that this approach will also neutralise the risk of widespread and inevitable boredom or alienation that might otherwise result from the widespread introduction of human enhancement if people are nudged to engage more and more reflectively in their enhancement choices. Additionally, lifestyle issues like obesity, heart disease, cancers, and inaccessibility of vaccines and birth control pose unresolved problems for existing general medicine, killing millions every year worldwide. As a result, another serious challenge for enhancement medicine, which I propose would be addressed by the nudge approach, is to justify its place in the professional domain of medicine. (shrink)