Abstract
We use a novel approach to explore how people sort into different careers based on their personality and skills. We link genetic data from individuals in the Swedish Twin Registry to government register data, making use of new polygenic indices that capture the genetic predispositions of individuals towards a range of relevant cognitive skills, personality traits, and economic preferences. We first present a detailed mapping of these genetic tendencies by occupation and study major. We show that – conditional on their socio-economic background – people who sort into different study majors and occupations differ significantly in their genetic predispositions. We then take advantage of random genetic variation between siblings to show that this sorting is at least partially due to a causal effect of genetic tendencies on career choices. Our results shed new light on the determinants of some of the most impactful decisions people must make in their lives.