“…Oxytocin, prolactin, and vasopressin have long been known to influence parental responsiveness (Delahunty, McKay, Noseworthy, & Storey, 2007;Feldman, Gordon, Schneiderman, Weisman, & Zagoory-Sharon, 2010;A S Fleming, Ruble, Krieger, & Wong, 1997;Gordon, Zagoory-Sharon, Leckman, & Feldman, 2010;Storey, Walsh, Quinton, & Wynne-Edwards, 2000). Similarly, estrogen has been shown to be linked to maternal drive in female primates, including humans (Law Smith et al, 2012;Ramirez, Bardi, French, & Brent, 2004). Recent work has also suggested men and women with children have lower testosterone than those without (Gettler, McDade, Feranil, & Kuzawa, 2011;Kuzawa, Gettler, Huang, & McDade, 2010), and an inverse relationship between testosterone and paternal caregiving behaviors among fathers (Fleming, Corter, Stallings, & Steiner, 2002;Gettler et al, 2011;Mascaro et al, 2013 Overall, there is converging evidence for heightened processing of the baby schema within components of the dopaminergic motivational system, as well as some aspects of Haxby's core face processing system.…”