Template-type: ReDif-Paper 1.0 Author-Name: Salamanca Acosta N. Author-Name: Hamermesh D. Author-Name: Feld J.F. Author-workplace-name: ROA Title: Endophilia or exophobia: beyond discrimination Abstract: The immense literature on discrimination treats outcomes as relative One group suffers compared to another. But does a difference arise because agents discriminate against othersare exophobicor because they favor their own kindare endophilic This difference matters, as the relative importance of the types of discrimination and their inter-relation affect market outcomes. Using a field experiment in which graders at one university were randomly assigned students exams that did or did not contain the students names, on average we find favoritism but no discrimination by nationality, and neither favoritism nor discrimination by gender, findings that are robust to a wide variety of potential concerns. We observe heterogeneity in both discrimination and favoritism by nationality and by gender in the distributions of graders preferences. We show that a changing correlation between endophilia and exophobia can generate perverse predictions for observed market discrimination. Keywords: Economic Methodology: General; Education and Inequality; Labor Discrimination; Classification-JEL: J71; I24; B40; . Series: Research Memoranda Creation-Date: 2013 Number: 008 File-URL: http://pub.maastrichtuniversity.nl/4cd48495-8c69-4946-9bda-38868e422d0d File-Format: application/pdf File-Size: 877760 Handle: RePEc:unm:umaror:2013008