On average , sentence training and passive exposure led to significantly improved sentence recognition ( 11.0 % and 11.7 % , respectively ) compared with the consonant training group ( 2.5 % ) and test-only group ( 0.4 % ) , whilst , consonant training led to significantly improved consonant recognition ( 8.8 % ) compared with the sentence training group ( 1.9 % ) , passive exposure group ( 2.8 % ) , and test-only group ( 0.8 % ) .