本研究探讨了均龄 1 0 .8岁的弱智儿童的视、触长度知觉辨别能力 ,并与均龄相同的正常儿童作了比较。结果表明 ,无论是弱智儿童或是正常儿童 ,对长度知觉的辨别 ,视觉的结果均明显优于触觉的结果。弱智儿童对长度知觉的辨别的准确性 ,无论是视觉或是触觉的结果均明显低于均龄相同的正常儿童。这表明智力缺陷也会对人的低级心理功能产生明显影响 This study explored the ability of children with visual impairment at visual sense and touch length of 108-year-old children of average age to compare with normal children of the same age. The result shows that the discrimination of the length perception and the visual result are obviously better than the tactile result in both mentally handicapped children and normal children. The accuracy of discerning children’s perception of length perception, both visual and tactile, was significantly lower than that of normal children of the same age. This shows that mental retardation will also have a significant impact on people’s low-level psychological function