Promoting vaccination is a crucial strategy to end the COVID-19 pandemic; however, individual autonomy should be respected at the same time. This study aimed to discover behavioral economics nudges that can reinforce people’s intention to receive the COVID-19 vaccine without impeding their...

We examined whether the knowledge that your private donation has a large number of potential recipients causes you to give more or less. We found that the people with blood type O are more likely to have donated blood than those with other blood types, by using a Japan's nationally...

We empirically investigated how voluntary helping behavior is influenced by the number of its potential recipients by using a nationwide survey in Japan (N = 1,333) and examining the relationship between blood type and blood donation behavior. It is generally known in Japan that type O blood can...

The main purpose of this paper is to study how individual differences in implicit worldviews regarding categories versus relationships affect altruistic behavior towards parents, children and non-family members, using the survey data of Korea, Japan and the US. Altruism and intergenerational...

An important difficulty in many models of behavioral economics is that preferences are endogenous and unstable. Therefore, preferences may not provide the most desirable yardstick to evaluate social states. This paper proposes unconditional love as a candidate for such a yardstick. The concept...