Do children actually learn languages faster than adults? The science says otherwise.

Ideas & Philosophy · Published 3 October 2026 Swipe more like this →

In short: The belief that children are superior language learners is almost universal, yet evidence suggests adults often learn faster and more easily. While children possess a unique biological mechanism for rapid information stabilization, the common narrative regarding their inherent linguistic advantage over adults is frequently misunderstood by the public and experts alike.

The secret to a child's learning efficiency lies in a neurotransmitter called GABA (γ-aminobutyric acid). A study led by Brown University neuroscientists, published in Current Biology, reveals that children experience a rapid boost in GABA concentration during consecutive learning sessions. This surge allows them to stabilize new information almost immediately, preventing it from being overwritten by subsequent tasks. This process, known as retrograde interference, is a major hurdle for adults, whose brains require a 'cooling-off' period of at least one hour after learning to protect new knowledge.

In contrast to children, adults maintain a more fragile state of learning. While adults have higher baseline levels of GABA—which contributes to better impulse control—their GABA levels do not exhibit the same dynamic, rapid increase during learning sessions as seen in children aged 8 to 11. Because adult neural networks remain 'hot' and flexible for an extended period after processing new information, they are more susceptible to having that information destroyed if they attempt to learn something new too quickly. This is why adults often struggle to absorb large amounts of information in rapid succession compared to younger learners.

However, this does not mean adults are incapable of efficient learning. Researchers like Takeo Watanabe and Sebastian Frank suggest that the findings regarding GABA-associated inhibitory processing could eventually lead to new technologies or therapies designed to boost GABA in adult brains. By artificially stabilizing neural networks, it may be possible to help adults achieve the same rapid learning efficiency that children naturally exhibit. While the study focused on visual learning, the researchers believe these mechanisms likely generalize to other forms of memory and acquisition, challenging the long-held myth that the window for efficient learning closes after childhood.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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