There is little difference between individuals in the aspect of IQ, and the real difference is the non-intelligent factors.

个体之间的智商水平差异不大，而真正有差异的是非智力因素。

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There was also obvious difference between individuals.

视觉障碍儿童个体间差异明显；

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There was also obvious difference between individuals.

视觉障碍儿童个体间差异明显；

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