“…Teaching and learning are cultural activities (Kawanaka, Stigler, & Hiebert, 1999), and TIMSS encompasses countries with very different cultural, social, historical, and political backgrounds. Additionally, examination of the data collected in the TIMSS curriculum analysis reveals substantial differences cross-nationally (Schmidt, McKnight, Valverde, Houang, & Wiley, 1997;Schmidt, Raizen, Britton, Bianchi, & Wolfe, 1997). All these cross-national differences should be taken into account when examining the relationship between students' achievement and the three self-perception measures used in the present study.…”