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Muslim societies have been reshaped in recent decades by an Islamic revival. We document a contemporaneous decline in social mobility among educated youth in Egypt, the epicentre of the movement in the Arab world. We then develop a model to show how an unexpected decline in social mobility combined with inequality can produce a religious revival led by the educated middle class. The principal idea is that religion helps individuals to cope with unfulfilled aspirations by adjusting their expectations-based reference point. By raising aspirations, economic development may make societies more prone to religious revivals. 2 Clemens et al. (2009) and Campante and Chor (2012), among others, have also documented that over recent decades increases in education have not been matched with increases in economic opportunities in Egypt and the Middle East more generally. Campante and Chor (2012) link political protest during the Arab spring to these factors. To our knowledge, none of these studies examined changes in social mobility among the educated. We also focus on a different time period, during which major changes took place both in the Egyptian labour market and in society at large.

Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. www.econstor.eu The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between science, politics and business. IZA is an independent nonprofit organization supported by Deutsche Post Foundation. The center is associated with the University of Bonn and offers a stimulating research environment through its international network, workshops and conferences, data service, project support, research visits and doctoral program. IZA engages in (i) original and internationally competitive research in all fields of labor economics, (ii) development of policy concepts, and (iii) dissemination of research results and concepts to the interested public. Terms of use: Documents in D I S C U S S I O N P A P E R S E R I E SIZA Discussion Papers often represent preliminary work and are circulated to encourage discussion. Citation of such a paper should account for its provisional character. A revised version may be available directly from the author.IZA Discussion Paper No. 7183 January 2013 ABSTRACT Social Distance and Trust: Experimental Evidence from a Slum in Cairo *While strong social ties help individuals cope with missing institutions, trade is essentially limited to those who are part of the social network. We examine what makes the decision to trust a stranger different from the decision to trust a member of a given social network (a friend), by comparing the determinants of these two decisions for the same individual. We implement a binary trust game with hidden action in a lab-in-the-field experiment with residents of an informal housing area in Cairo. Our results show that trust is higher among friends than among strangers and that higher trust among friends is related to the principal's belief of trustworthiness. However, on average a principal underestimates her friend's trustworthiness leading to inefficient outcomes. Our findings suggest that even within a social network, trade may often be limited to exchanges with few information asymmetries. JEL Classification:C72, C93, D82, O12

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