In this work, we test the hypothesis that the Colombian system of socio-economic stratification, which ranks dwellings from one to six to calculate utility (public services) rates, may be discriminatory and increase segregation. A field experiment with around 1000 participants from Bogota is carried out. The design includes a combination of a trust game and a dictator game. Results exclude the presence of pure preferences for discrimination yet confirm that low strata are associated with stereotypes of low trustworthiness. We also observe significant pro-social behavior in the low-income population, and, most strikingly, we do not observe any difference in trustworthiness according to income level.
