Grade level, study time, and grade retention and their effects on motivation, self-regulated learning strategies, and mathematics achievement: a structural equation model

European Journal of Psychology of Education (2013) - Comment
doi: 10.1007/s10212-012-0167-9 issn: 0256-2928 issn: 1878-5174

Pedro Rosário, José Carlos Núñez, António Valle, Julio González-Pienda, Abílio Lourenço