阅读障碍儿童在图形分类识别中的启动效应

Priming Effect in Picture Categorizing Process for Chinese Dyslexic Chidren

目的:探讨阅读障碍儿童与正常儿童在图形分类识别中启动效应的差异。方法:25名阅读障碍儿童和50名对照儿童(25名年龄对照,25名阅读水平对照)完成了一项掩蔽图形启动试验。在试验中,启动图在掩蔽条件下呈现给被试,试验要求被试对目标图进行分类(判断其是否为动物),从而考察被试在启动任务中的反应时、启动量及应答错误率差异。结果:阅读障碍组和两个对照组被试校正启动量分别是0.061、0.057和0.064,三组间差异不显著。结论:阅读障碍儿童与对照儿童在图形分类识别任务中的启动效应差异不显著,没有表现出明显的普遍物体图形的特征加工缺陷。

Objective： To assess the difference of priming effect in visual picture categorizing task between dyslexic children and normal children. Methods： Twenty-five dyslexic children and 50 control subjects （25 matched with chronological age and 25 matched with reading level） completed a masked picture priming experiment of pictorial stimuli. On each trial, a masked prime picture was briefly displayed. The participants were required to classify target stimuli as animal or nonanimal. Priming effect and response error rate between dyslexic children and normal children was analyzed. Resuits： The adjusted facilitation of congruent pairs of dyslexic children was 0.061, and the two controlled groups were 0.057 and 0.064 respectively. The differences between dyslexic children and controlled groups were not significant. Conclusion： Dyslexic children do not exhibit significant deficit in general object picture＇s features processing.