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随机抽取年龄为４２天至３个月的正常婴儿６０名为干预组，３５名为对照组。干预组入组后即接受早期干预。婴儿一岁时，干预组５１名、对照组３２名，两组婴儿均采用贝利婴儿发展量表进行评估，结果发现：干预组婴儿的ＭＤＩ高于对照组，且情绪更愉快、适应性更好，但两组的ＰＤＩ及躯体发育却无显著差异。本结果提示：早期干预能促进婴儿的心理发展。
Sixty normal infants aged from 42 days to 3 months were selected as the intervention group and 35 as the control group. The intervention group received early intervention after intervention. At the age of one year, 51 infants in the intervention group and 32 in the control group were evaluated by using the Bailey infant development scale. The results showed that the infants in the intervention group had higher MDI than those in the control group and the mood was more pleasant and the adaptability was more However, there was no significant difference in PDI and somatic development between the two groups. The results suggest that early intervention can promote the infant’s psychological development.