“…LTSAE materials are designed based on behaviour change theory and social marketing techniques (Raspa et al, 2015). Several evaluation studies of LTSAE materials have demonstrated an impact on public awareness and parent attitudes and practice (Burt, 2013;Graybill, Self-Brown, Lai, Vinoski, McGill, & Crimmins, 2016;Patel, 2007;Westat, 2015;Crimmins, Graybill, & Vinoski, 2013). Specifically, these studies have established that population-level awareness of ASD increased during the first two years of the LTSAE campaign and that parents had positive perceptions of LTSAE materials (Graybill et al, 2016;Raspa, et al, 2015;Patel, 2007;Westat, 2015).…”