August can barely describe how he hears when the audiologist turns on his hearing aids. He no longer hears an "ocean" in his head, and words sound bright. When Mom asks how he's hearing, he tells her she doesn't need to yell. The audiologist shows August how to adjust his volume, and the next day, nobody at school makes a big deal about them. August can't figure out now why he was so stressed about the hearing aids.
By forcing August to wear the hearing aids until he recognizes that they're actually good for him, Mom is able to push August towards maturity. This teaches him that things that may initially seem unpleasant can be positive in the end, which is a thought process that individuals learn as they become more mature.