Contact in context: does intergroup contact function (better) in high-threat contexts?

Are interpersonal contacts effective in reducing group threat and prejudice in all contexts? Studies have found that the contact effect is stronger in regions and countries where large immigrant populations contribute to high levels of contextual group threat This paper tests the robustness of the observed positive association between contextual-level group threat and contact effects by identifying three methodological reasons for why the association might be spurious: (1) a potential omitted variable bias; (2) a potential self-selection effect; and (3) a potential ceiling effect. Using the 2002 European Social Survey, we find that the positive association is indeed robust. We interpret this as evidence that contact effects are strongest in those European contexts where the need for improved intergroup relations between immigrants and natives is most dire.