When adults talk to babies, they often use a special way of speaking. This style, known as infant-directed speech, includes exaggerated vowels. These exaggerated vowels make speech sounds clearer and easier for babies to understand. This might help babies learn language faster and better. However, studies on this topic have given mixed results. Some show clear exagge...

Parents' speech to their babies changes a lot as the little ones grow. This isn't just about what they say, but how they say it. The way parents speak to their babies, known as infant-directed speech, is full of ups and downs in pitch and volume. This helps babies pay attention, feel calm, and understand emotions. But how does this speech change when both parents are...