Baumert, J., Schnabel, K.-U., & Lehrke, M. (1998). Learning math in school: Does interest really matter? In L. Hoffmann, A. Krapp, K. A. Renninger, & J. Baumert (Eds.), Interest and learning: Proceedings of the Seeon Conference on Interest and Gender (pp. 327-336). Kiel: IPN.