Why children differ in motivation to learn: Insights from over 13,000 twins from 6 countries.

Kovas, Y., Garon-Carrier, G., Boivin, M., Petrill, S. A., Plomin, R., Malykh, S. B., Spinath, F., Murayama, K., Ando, J., Bogdanova, O. Y., Brendgen, M., Dionne, G., Forget-Dubois, N.,Galajinsky, E. V., Gottschling, J., Guay, F., Lemelin, J-P., Logan, J. A. R., Yamagata, S., Shikishima, C., Spinath, B., Thompson, L. A., Tikhomirova, T. N., Tosto, M. G., Tremblay, R., & Vitaro, F. (2015). Why children differ in motivation to learn: Insights from over 13,000 twins from 6 countries. Personality and Individual Differences, 80, 51-63. PDF   Online Article