SCIENCE

Why Babies Remember, But Adults Don't

Yale University, New Haven, USAFri Mar 21 2025
The brain is a mystery. It is amazing how much babies learn in their first years. They pick up language, understand routines, and even form expectations about their world. Yet, as adults, we struggle to recall any of these early experiences. Why is that? Recent findings shed some light on this puzzle. The hippocampus, a part of the brain crucial for memory, shows more activity in babies who are 12 months or older when they are trying to remember something. This was discovered by researchers who used special brain scans on infants while showing them pictures. They found that older babies not only had more active hippocampus but also showed activity in another brain region linked to decision-making and recognition. But here’s the twist: even though babies can form memories, adults can’t access them. This might be because the way babies process information is different. The hippocampus might not be getting the right “search terms” to find these early memories. It’s like trying to find a book in a library without knowing the title or author. So, what does this mean for parents? It means that even though babies can’t remember their early experiences, they are learning a lot. They are taking in language, understanding routines, and exploring their world. Parents can help by providing opportunities for visual exploration and repetition. This can help babies learn and form connections. It’s also important to note that babies are not just passive observers. They are actively learning and forming expectations. This is why repetition is so important. It helps babies make connections and learn. So, even though you can’t remember your early experiences, you were learning and growing. The brain is a complex organ. It is amazing how much it can do, even in the earliest stages of life. But it is also a mystery. There is still so much we don’t know about how it works. This study is just one piece of the puzzle. It shows us that babies are capable of more than we thought. But it also raises new questions. Why can’t we access these early memories? What else are babies capable of? Only time and more research will tell.

questions

    If infants are learning so much, why do they still think it's a good idea to put everything in their mouth?
    How does the hippocampus's role in memory encoding change as infants age?
    If babies can't remember their early experiences, does that mean they get to relive their first birthday party every year?

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