“…There have been a number of reviews examining the characteristics of studies that teach academic content to students with IDD (c.f., Browder et al, 2009;Hudson et al, 2013;Knight & Sartini, 2015), and several have examined whether the studies assessed generalization (Hudson et al, 2018;Sartini et al, 2018;Spooner et al, 2011Spooner et al, , 2012Spooner et al, , 2018. However, these reviews only reported whether the studies measured generalization but not the form of generalization, the strategies included in the intervention, or whether the study demonstrated a causal relationship between the intervention and the generalization-dependent variables.…”