Ethnic heterogeneity influences economic growth through various channels such as efficiency improvement and capital accumulation. However, it is open to discussion exactly how ethnic heterogeneity affects these channels. Hence, this paper attempts to examine the effects of heterogeneity on...

This paper analyzes the effect of public pension system on lifespan and happiness level using optimal longevity model. This paper found the following. Public pension system can make life expectancy longer, however, the extension of lifespan caused by the public pension, not by own decision,...

This paper analyzes and predicts the changes of relationship between income and fertility rate of cross-countries using a bivariate mixture model and a latent change score model. This paper has shown that there is a negative relationship between income and fertility rate, which is presented in...

This paper investigates the relationship between the spread of COVID-19 and time preference. In contrast to previous studies that compared time preferences before and during the pandemic, this study estimates time preferences during the COVID-19 period using eight surveys conducted over two...

I investigated how people's childhood experiences of involvement in team sports helped them develop non-cognitive skills, which later prompted them to make charitable donations to disaster victims. I independently collected individual-level data from approximately 7000 observations in 2016. The...

Using data on wrestlers and tournaments since the early 1970s, we study promotion practices in Sumo, a Japanese traditional sport. We show that, especially since 2010, foreign-born wrestlers trying to attain the second highest rank in Sumo were treated less favorably than Japanese born...

Using individual-level data for China,South Korea, and Japan for2006, this research examines how life satisfaction for married males and femalesin East Asian countries isinfluenced bythe age of theirchildren. Our results show that the life satisfaction of males is barely affected by a child of...

This paper explores the role of mass media in people’s perceptions of charismatic leaders, focusing on the case of Junichiro Koizumi, Prime Minister of Japan from 2001 to 2006. Using survey data collected immediately after Koizumi’s 2005 landslide electoral victory, this study empirically...

Empirical studies have shown that preferences for redistribution are significantly correlated with expectations of future mobility and the belief that society offers equal opportunities. We add to previous research by investigating the role of individual and social norms on rent seeking. We find...

This paper uses inter-country panel data obtained during the period 1990-2010 to examine how the occurrence of natural disasters has affected corruption within the public sector. There are a number of new findings from this study. (1) Disaster with the large amount of damage increase corruption...