“…The difference between children's early mastery of Principle A and their late mastery of Principle B is generally referred to as the Delay of Principle B Effect. Many studies have addressed the Delay of Principle B Effect, from a theoretical as well as from an empirical perspective (e.g., Baauw & Cuetos, 2003;Bloom et al, 1994;Conroy et al, 2009;de Villiers et 4 al., 2006;Grodzinsky & Reinhart, 1993;Hendriks & Spenader, 2005/6;Matthews et al, 2009;McKee, 1992;Reinhart, 2006;Spenader et al, 2009;Thornton & Wexler, 1999;van Rij et al, to appear).…”