“…During this period, physical and brain functions undergo dramatic changes, which lead to quicker development of cognitive and social abilities. For example, distinct changes in thinking (Keating, 2004), self-perception (Wigfield, Eccles, Mac Iver, Reuman, & Midgley, 1991), and motivation (Wigfield et al, 1991) occur during adolescence. These changes may significantly influence a variety of developmental outcomes, including academic achievement, selfconcept development, achievement motivation (Wigfield & Wagner, 2005), and prototypes of physical activities (e.g., Keresztes et al, 2009).…”