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为了探讨遗传与环境对智力的影响程度，我们对沈阳市皇姑区11所中小学8～16岁的38对双生子进行了智商测定及分析，结果表明：双生子的智商明显低于一般人群；异卵双生子间智力差别显著，同卵双生子间智力差别不显著，说明遗传对儿童智力发育是有影响的；在一起生长的同卵双生子及异卵双生子，其智商均密切相关，足以证明环境对儿童智力发育影响的肯定作用，智力的遗传度为20％左右，进一步验证了环境在儿童智力发育中的重要性。
In order to investigate the influence of genetics and environment on intelligence, we measured and analyzed 38 pairs of twins aged from 8 to 16 in 11 primary and secondary schools in Huanggu District of Shenyang City. The results showed that the twins had lower IQ than the general population ; Twins have significant differences in intelligence between twins, with no significant difference between twins in intelligence, indicating that inheritance has an impact on the development of children’s intelligence; twins and tweens that grow together are closely related , Which is enough to prove the positive effect of environment on the intellectual development of children. The heritability of intelligence is about 20%, further verifying the importance of environment in children’s intellectual development.