* 轻度听力损失是一个隐形的声学滤波器。他们听到的言语信号不够响亮清楚。也就是说，轻度听力损失儿童听到言语会较少。一个听力在30 dB的儿童会错过课堂上25~40%的内容。一个听力在35~40 dB的儿童将会错过教室里50%的内容。Bess等人在1998年曾报道到，在最微小Hearing lossAmong children (mild or unilateral), 37% failed in third grade.
* Children with mild hearing loss can hear speech at a relatively close distance, but when the speaker is 3 meters away from the child, it will be more difficult to hear.This is not a trivial question.Over 80% of what children learn is through eavesdropping.If a child has mild hearing loss, he will miss a lot of speech, leading to language development delay.It is very likely that we will recognize this delay in a few years, when we are talking about how to correct the problem, not prevent it.
