“…The process of establishing shared meanings via negotiation of roles, scripts, and actions to create a common understanding between partners is a dynamic and intricate form of communication (Farver, 1992;Garvey, 1990;Giffin, 1984;Göncü, 1993;Howe et al, in press;Leach et al, 2015;Parsons and Howe, 2013). To ensure partners are in sync with one another, they must engage in reciprocal and bi-directional exchanges using a variety of strategies such as introductions, extensions, and clarifications (Farver, 1992;Giffin, 1984;Göncü, 1993;Howe et al, 2005Howe et al, , 2020Leach et al, 2015). As Bateson (1955) argued, children need to signal to their partner that "this is play" via effective communication strategies to co-construct a narrative.…”