“…Rough and tumble play refers to vigorous behaviours, such as wrestling, grappling, kicking, tumbling and play fighting, which appears aggressive except for the playful framework (Flanders, Leo, Paquette, Phil, & Seguin, 2009;Jarvis, 2007;Pellegrini, 1989Pellegrini, , 1995Pellegrini & Smith, 1998;Romano, Tremblay, Boulerice, & Swisher, 2005). Although this type of play has been found to be positive for physical, social and cognitive development (Jarvis, 2007;Paquette, Carbonneau, Dubeau, Bigras, & Tremblay, 2003;Smith, Smees, & Pellegrini, 2004), it is often erroneously misinterpreted as aggression (Flanders et al, 2009). In fact, even in the research literature rough and tumble play has been confused and combined with aggression when the two behaviours are defined (Smith et al, 2004).…”