el-masri@dezim-institut.de3Freundschaft und Identität in der Schule: LängsschnittstudieFriendship and Identity in School: Longitudinal StudyProf. Dr. Frank KalterFreundschaft und Identität in der Schule: LängsschnittstudieFriendship and Identity in School: Longitudinal StudyProf. Dr. Frank KalterDas von der Deutschen Forschungsgemeinschaft (DFG) geförderte Projekt Freundschaft und Identität in der Schule untersucht die Entstehung und den Wandel sozialer Netzwerke und ethnischer Identifikationen von Kindern und Jugendlichen. Hierzu wurde ein Netzwerk-Panel aufgebaut, in dem Schülerinnen und Schüler in neun Schulen in Nordrhein-Westfalen wiederholt befragt werden. Dieser Feldbericht dokumentiert die Vorbereitung und Durchführung der Erhebung der ersten und zweiten Welle, die im Mai 2013 und Februar 2014 abgeschlossen wurden. Dargestellt werden das Studiendesign, das Erhebungsinstrument, die Auswahl der Schulen, die Ausschöpfung sowie die Feldarbeit und die Datenaufbereitung. Insgesamt wurden rund 2.100 Schülerinnen und Schüler aus 26 Jahrgängen (85 Klassen) befragt. In der ersten Welle nahmen 1.668, in der zweiten Welle 1.862 Schülerinnen und Schüler teil. Über 1.400 Schülerinnen und Schüler konnten zweimal befragt werden. Die dritte Erhebungswelle ist für November 2014 angesetzt. The project 'Friendship and Identity in Schools,' funded by the German Research Foundation (DFG), examines the formation and transformation of social networks and ethnic identifications among children and adolescents. For this purpose, a network panel was established, in which students from nine schools in North Rhine-Westphalia were repeatedly surveyed. This field report documents the preparation and execution of the data collection for the first and second waves, which were completed in May 2013 and February 2014, respectively. The study design, data collection instrument, school selection, response rates, fieldwork, and data processing are presented. In total, approximately 2,100 students from 26 grade levels (85 classes) were surveyed. In the first wave, 1,668 students participated, and in the second wave, 1,862 students participated. Over 1,400 students were surveyed twice. The third data collection wave is scheduled for November 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