In this study, we examine the relation between different kinds of siblings and earnings and find that both nature and nurture matter: full-siblings are equally negatively related to earnings regardless of whether one grew up with them or not. The number of step-siblings, on the other hand, also...

Survey data is used to investigate how birth order and presence/absence of siblings affect positional concerns in terms of success at work and of earned income. We find that people's positional concerns in terms of work-related issues generally are weak, but there are some differences in this...