In their paper, Filipe Rodrigues Gouveia, Therese Nilsson, and NOUS member Niclas Berggren measure and analyze discriminatory behavior against same-sex couples trying to rent an apartment in Portugal. This is the first correspondence field experiment investigating discrimination against this minority group in Portugal, adding to a literature using this method to ascertain discriminatory behavior in the housing market. In their experiment, four type of applicants varying in gender (male and female) and modality (same and opposite sex) reply to Internet ads to express interest in renting an apartment in the metropolitan areas of Porto and Lisbon. All applicant couples are presented as married, stable and professional. The main finding is that male same-sex couples face significant discrimination: The probability of getting a positive reply is 7–8 percentage points, or 26 percent, lower for them compared to opposite-sex couples. The effect is even more negative in parishes where the population is older, and discrimination.
The full paper is available here.