Does a high regional concentration of immigrants of the same ethnicity affect immigrant children’s acquisition of host-country language skills and educational attainment? We exploit the exogenous placement of guest workers from five ethnicities across German regions during the 1960s and 1970s...

Randomized experiments are often viewed as the "gold standard" of scientific evidence, but people's scepticism towards experiments has compromised their viability in the past. We study preferences for experimental policy evaluations in a representative survey in Germany (N1,900). We find that a...