MENTAL RETARDATION AND PERCEPTUAL PROCESSING

描述：(改编自申请者摘要)本计划 一项研究调查了轻度智力障碍成年人的能力 正确感知和处理某些类别的刺激，具有鲜明的 属性。包括全局立体形式、全局运动形式、 生物运动的模式和大小/距离的相互作用 3-D空间。这些刺激物在视觉早期就启动了前注意过程。 并被非智障人士毫不费力地看到。然而，之前 研究表明，这种刺激揭示了实质上的知觉 轻度智障患者在以下情况下的缺陷消除，如 致病因素、周围性视力异常和失明 理解。这是一个令人惊讶的结果，因为轻度迟缓 通常被认为是智力和认知的产物 不足之处。拟议的调查旨在更准确地指明 这些知觉缺陷的特征。生成的数据应该是 直接有助于加深对精神发育迟滞的理解。更多 一般说来，它们都涉及到认知和认知的可分性问题 感知过程。

DESCRIPTION: (Adapted From The Applicant's Abstract) This program of research investigates the ability of mildly mentally retarded adults to perceive and process correctly certain classes of stimuli with distinctive attributes. Included are global stereoscopic forms, global kinetic forms, patterns of biological motion and size/distance interactions produced by 3-D space. These stimuli engage preattentive processes early in the visual system and are seen effortlessly by nonretarded persons. However, prior research has demonstrated that such stimuli reveal substantial perceptual deficits in mildly retarded persons under conditions that eliminate, as contributing factors, peripheral visual anomalies and failures of comprehension. This is a surprising outcome because mild retardation is generally regarded to be a product of intellectual and cognitive deficiencies. The proposed inquiry 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.