WHY DO INFANTS FAIL TO SEARCH FOR HIDDEN OBJECTS?

描述：如果手段-目的赤字不能解释婴儿？搜索失败 那么，为什么婴儿能成功地用隐藏的物体， 黑暗，不需要手段-目的技能？拟议工作涉及 这个问题通过测试分级表示帐户，来自 认知神经科学根据这份报告，婴儿？表示 随着发展逐步加强，以支持在更大范围内取得成功， 客体永存性任务婴儿在黑暗中寻找之前， 因为黑暗对易碎物体的干扰较小 比可见遮挡物更有效第一个项目将测试 通过控制光与光之间的偶然差异， 黑暗的研究，可能有利于在黑暗中搜索。第二个项目将测试 通过以下方式将分级表示与手段-目的赤字账户进行对比： 操纵是否向6.5个月大的婴儿展示可用的隐藏物体 通过直接接触或手段-目的序列，在黑暗或光明中。的 第三个项目将测试分级表示帐户通过操纵 被认为影响物体表征强度的因素，例如 与对象有关的经验的数量和类型。长期目标是 增加对正常婴儿群体认知发展的了解。

DESCRIPTION: If a means-end deficit cannot explain infants? search failures with hidden objects, then why do infants succeed with objects hidden by darkness, which does not require means-end skill? The proposed work addresses this question by testing the graded representations account, derived from cognitive neuroscience. According to this account, infants? representations gradually strengthen with development to support success on a greater range of object permanence tasks. Infants search in the dark before they search in the light because darkness interferes less with a fragile object representation than a visible occluder does. The first project will test whether the dark advantage is genuine by controlling incidental differences between light and dark studies that may favor search in the dark. The second project will test the graded representations account against the means-end deficit account by manipulating whether 6.5-month-olds are presented with hidden objects available by direct reach or a means-end sequence, in either the dark or the light. The third project will test the graded representations account by manipulating factors believed to affect the strength of object representations, such as amount and type of experience with the object. The long- term objective is to increaseknowledge about cognitive development in normal infant populations.