Field of study and partner choice

There is strong assortative mating by field of study. To examine to which extent this due self selection or a causal effect access specific ”marriage markets”, we use data from participants in admission lotteries four oversubscribed studies the Netherlands. For each studies, find that winning compliers an lottery are significantly more likely than losing have partner study, whereas only marginally study would occur under random matching. These results indicate largely marriage market and plays minor role. JEL-codes: I26, J12, J13.