Criado H., Herreros F., Miller L. & Úbeda P. (2015) Ethnicity and Trust: A Multifactorial Experiment. Political Studies 63(S1): 131-152

Abstract. This article reports the results of an online experiment conducted in two ethnically fragmented societies in Spain: the Basque Country and Catalonia. It tests the effect of co-ethnicity on trust and reciprocity. Ethnicity was manipulated in the experimental context using three ethnic attributes: ancestors' origin, language and name. Additionally, the article reports a comparison of general levels of trust in the two regions. No co-ethnicity effect on trust is found, but there is significantly more reciprocal behaviour between Catalan speakers in Catalonia.