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 SAN FRANCISCO - Adults thinking back rarely can remember anything before preschool, but those bright infant eyes staring back at Mommy and Daddy really are forming memories. It's just that babies also forget. In fact, babies' rate of forgetting is even faster than that of adults, Patricia Bauer of Duke University said Friday at the annual meeting of the American Association for the Advancement of Science. Bauer was part of a panel discussing "infant amnesia," the puzzling inability of people to remember events early in life. Researchers have long speculated that babies' brains were simply unable to form memories, but Bauer said new research indicates that is incorrect. While rates of memory development vary among infants, all babies are extremely intelligent, added Lisa Oakes of the University of California at Davis. "The task they have before them is overwhelming." Infants are very good at extracting information from their environment, said Oakes. The ability to form memories depends on a network of structures in the brain, and these develop at different times, Bauer said. As the networks come together between 6 months and 18 months of life, researchers see increased efficiency in the ability to form short-and long-term memory, she said. From age 6 months to 2 years, memory increases from about 24 hours to a year, she said. But noting that children, like adults, forget, she compared the brains of infants and adults with colanders used to drain food. The adult colander has small holes, for draining something like orzo or rice, while the infant colander has larger holes, such as for draining large penne pasta, but allowing more information to flow out. Adults' earliest memories of childhood tend to be emotional events, either positive or negative, she added. "Our lives completely depend on being able to remember the past," Bauer said, and that matures during the first two years of life.
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