ASSESSMENT AND ANALYSIS OF PERCEPTUAL CAPACITIES

这个研究项目调查的是轻度心理障碍的能力 智障成年人正确感知某些类别的刺激 独特的属性。其中包括制作的全局立体形式 由生成的随机元素立体图和全局运动定义形式 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 它定义了三维空间的图形表示，也将 以及感知处理可以被修改的程度 通过感性认识的学习会得到探索。所有的刺激条件都涉及 在婴儿期出现的现象，并由自动处理 知觉系统的前注意阶段。他们被感知到了 不迟钝的人毫不费力地，没有错误地。然而在这些相同的情况下 条件，轻度智障的人表现出很强的知觉 赤字。这是一个令人惊讶的结果，因为轻度发育迟缓 通常被认为是智力和认知的产物 不足之处。拟议的调查建立在之前工作的基础上，寻求 更准确地说明这些知觉缺陷的特征。 由此产生的数据应该直接有助于更深入地理解 精神发育迟滞。更广泛地说，它们涉及到 认知和知觉过程的可分性。

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.