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比较不同智商正常儿童和唐氏综合症(Down’s Syndrome)儿童的关联性负变(Contingent Negative Variation CNV)。结果是:智力缺陷儿童的CNV幅度明显下降甚至缺失。智力较高儿童CNV较大,CNV的晚成分与智商,尤其是言语智商密切相关,智商和言语智商越高,晚成分幅度越大。似乎晚成分更能反映人的语言方面的能力。早成分则与语言、操作以及全量表智商都无明显关系。
We compared Contingent Negative Variation (CNV) between children with normal IQ and Down’s Syndrome. The result: CNV amplitude in children with mental retardation decreased significantly or even missing. Children with higher intelligence had a higher CNV, and late components of CNV were closely related to IQ, especially verbal IQ. The higher IQ and verbal IQ, the greater the late ingredients. It seems that the late ingredients better reflect one’s language ability. Early components and language, operation and full scale IQ have no obvious relationship.