in the mid-1800s, catholic priests took the existing lsf and asl and combined the two to promote education of deaf children and adolescents. several decades later, under the influence of western thought, oralism became the primary mode of instruction in quebec and the rest of north america. there, students were subjected to environments that discouraged and often outright banned lsq use, instead promoting the use of whatever residual hearing the student had if any. such an approach had varying effects where audism lead to lower literacy rates as well as lower rates of language acquisition seen in children sent to residential schools at an early age.