Marsh, H. W., Trautwein, U., Lüdtke, O., & Köller, O. (2008). Social comparison and Big-Fish-Little-Pond-Effects on self-concept and other self-belief constructs: Role of generalized and specific others. Journal of Educational Psychology, 100(3), 510-524. doi:10.1037/0022-0663.100.3.510.