Indiana State University, United States.
Infant Behav Dev. 2012 Dec;35(4):705-10. doi: 10.1016/j.infbeh.2012.07.003. Epub 2012 Sep 14.
The current study examined the integration of non-numerical (featural) and numerical information in 9-, 11-, and 13-month-old infants' performance on a number discrimination task. Infants were habituated to pictures of objects (e.g., bowl, shoe) either in groups of two or three. In the test phase, infants saw both new and old objects in both groups of two and three. Nine-month-old infants discriminated number independent of the familiarity of the object, 11-month-old infants discriminated between familiar and novel objects (but not the number of objects), and 13-month-old infants discriminated between the familiar and novel objects only in the context of a familiar number of objects. These data suggest that early number representations are dissociated from featural information, and that the integration of these stimulus properties is a developmental process that occurs across the first year.
本研究考察了在数量辨别任务中，9、11 和 13 个月大的婴儿对非数值（特征）和数值信息的整合。婴儿在两个或三个物体的组中被熟悉图片（例如碗、鞋子）。在测试阶段，婴儿在两个和三个物体的组中看到新的和旧的物体。9 个月大的婴儿独立于物体的熟悉程度辨别数量，11 个月大的婴儿辨别熟悉和新颖的物体（但不辨别物体的数量），而 13 个月大的婴儿仅在熟悉数量的物体背景下辨别熟悉和新颖的物体。这些数据表明，早期的数字表示与特征信息分离，这些刺激属性的整合是一个跨越第一年的发展过程。
