Boivin, Michel, Pérusse, Daniel, Dionne, Ginette, Saysset, Valérie, Zoccolillo, Mark, Tarabulsy, George. M., Tremblay, Nathalie et Tremblay, Richard E. 2005. «The Genetic-Environmental Etiology of Parent’s Perceptions and Self-Assessed Behaviours Toward their 5-Months-Old Infants in a Large Twin and Singleton Sample ». Journal of Child Psychology and Psychiatry, vol. 46, no 6, p. 612-630.