提重辨别实验中精神发育迟滞儿童的反应特征

采用提重辨别实验对精神发育迟滞儿童(MR)和正常儿童进行了测试比较。结果表明,MR 儿童左手、右手和双手测试成绩间虽未产生显著性差异,但此三种测试条件下的辨别能力明显低于正常儿童。提示其大脑两半球认知功能存有缺陷,不支持国外 MR 儿童认知功能障碍的“左脑障碍”或“右脑障碍”假说。测试中 MR 儿童有明显的不肯定判断倾向,似可作为 MR 儿童高层认知结构的特性反应。

Response characteristics of mentally retarded children in weight discrimination test

Twenty-eight MR children were compared with 28 normal children in a weight dis-crimination test.The ability of weight discrimination in MR children were found markedly lower thannormal children in the tests either with their left hand,right hand,or both hands,though no signifi-cant difference was found among either left and right,or both hands of MR child,implicating that theimpairment of recognition function involved both cerebri hemisphere,not to support the hypothesis ofrecognition dysfunction either in left hemisphere or in right hemisphere dysfunction for MR children.The present investigation also found that MR children showed obvious tendency to make indefinite judgement,which might be a specific response pattern in MR children.