Did you know that by the 20th week of gestation a baby's cochlea is fully formed? That means by the time a child is born they already have 20 (ish) weeks of hearing experience! That's why they show preference towards their mother's voices at such a young age. It's also why it's so important to get a child fitted with hearing aids as soon as possible once a hearing loss is detected. They're already 20 weeks behind so it's important to act quickly if you want your child to develop age-appropriate listening and speaking skills.