... female, 24 male), 59 infants at 7 months (28 female, 31 male), and 56 at 12 months (25 female, 31 male). The pre-terms and full-terms all had similar demographic backgrounds: gender, birth order, parental education, and ethnicity. All the infants were tested in a three-sided booth made of panels of black fabric. A display panel allowed the observer to know what was going on. At 5, 7, and 9 months the infants were shown 19 black and white photographs, all of the same size. One of the 19 photos was a familiar face to the child being tested. All the children sat on a parents lap and wore a neutral colored smock during testing. All of the tests were constructed as similar as possible. Results This study showed that pre-terms are much slower at processing information than the full-terms. Changes of processing times due to age were quite dramatic. Pre-terms tended to be ...

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