“…The multiple oppositions approach has been studied in children age 3-6 years with moderate-to-severe SSD in American English (Allen, 2013;Lee, 2018;Williams, 2000aWilliams, , 2000bWilliams, , 2005Williams, , 2012, Australian English (Sugden et al, 2020), and Brazilian Portuguese (Ceron & Keske-Soares, 2013;Pagliarin et al, 2009Pagliarin et al, , 2011. Williams initially developed and documented the efficacy of the approach in American English (Williams, 2000a(Williams, , 2000b(Williams, , 2005, and then subsequent work examined issues of intervention intensity (Allen, 2013;Williams, 2012) and intervention format (Lee, 2018;Sugden et al, 2020).…”