ASSESSMENT AND ANALYSIS OF PERCEPTUAL CAPACITIES

这个研究项目调查了轻度精神疾病患者 弱智成年人正确感知某些类别的刺激， 独特的属性 其中包括全球立体形式产生的 由随机元素立体图和全局运动定义的形式产生， 随机元素运动图，这两个都施加了大量的 视觉系统的计算负担。 整合线索的能力 定义三维空间图形表示的方法也将 以及感知处理可以被修改的程度 通过知觉学习将被探索。 所有刺激条件都涉及 在婴儿期出现的现象， 知觉系统的前注意阶段。 它们被感知 毫不费力，没有错误，由非弱智的人。 在这些相同的 条件下，轻度弱智者表现出实质性的知觉 赤字 这是一个令人惊讶的结果， 通常被认为是智力和认知的产物 缺陷 拟议的调查是在先前工作的基础上进行的，旨在 更精确地描述这些知觉缺陷的特征。 由此产生的数据应直接有助于更深入地了解 智力迟钝。 更一般地说，它们涉及的问题是 认知和知觉过程的可分离性。

This program of research investigates the ability of mildly mentally retarded adults to perceive correctly certain classes of stimuli with distinctive attributes. These include global stereoscopic forms produced by random element stereograms and global motion defined forms produced by random element kinematograms, both of which impose substantial computational burdens on the visual system. The ability to integrate cues that define pictorial representations of three-dimensional space will also be examined, and the extent to which perceptual processing can be modified by perceptual learning will be explored. All stimulus conditions involve phenomena that emerge in infancy and are processed by automatic preattentive stages of the perceptual system. They are perceived effortlessly, without error, by nonretarded persons. Yet under these same conditions, mildly retarded persons exhibit substantial perceptual deficits. This is a surprising outcome in that mild retardation is generally regarded to be a product of intellectual and cognitive deficiencies. The proposed inquiry, which builds on prior work, seeks to specify more precisely the characteristics of these perceptual deficits. The resulting data should contribute directly to a deeper understanding of mental retardation. More generally they bear on the issue of the separability of cognitive and perceptual processes.