Hyde, L.W., Waller, R., Trentacosta, C.J., Shaw, D.S., Neiderhiser, J.M., Ganiban, J.M., Reiss, D., Leve, L.D. (2016). Heritable and nonheritable pathways to early callous-unemotional behaviors. American Journal of Psychiatry, 173(9), 903-910. PMC5008992