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弱智儿童视觉表象清晰度发展趋势研究表明:从年级和年龄水平看, 轻度被试清晰度的发展呈缓慢、波动的趋势,14岁和9年级达到最高峰;清晰 度各维度之间发展不平衡;性别之间发展一致;与正常学生发展的最高峰相 比,落后4-5年;轻度和中度被试年级和年龄主效应均不显著,轻度和中度 被试之间差异显著,智力因素影响清晰度的发展。应在14岁关键年龄之前, 训练并提高清晰度,发展认知和形象思维能力。
The research on the development trend of the visual representation clarity of mentally retarded children showed that: from the grade and age levels, the development of mild subjects showed a slow and fluctuating trend, reaching the peak at the age of 14 and 9; Balance; gender development consistent; compared with the peak of normal student development, 4 to 5 years behind; mild and moderate test grade and age main effects were not significant, the difference between mild and moderate subjects Significantly, intellectual factors affect the development of sharpness. Training and improving clarity and developing cognitive and visual thinking skills should be conducted prior to the critical age of 14.