Schmidt R, Schreier K
Monatsschr Kinderheilkd (1902). 1978 Feb;126(2):81-6.
Follow-up examinations on 45 dizygotic and monozygotic twins were performed in order to establish differences in physical and mental development with regard to differences in birth-weight. The "critical" weight difference of at least 650 g could be established where mental abilities, height and head circumference scored lower in the lower birth weight group. Our findings stress the positive home environment as being responsible for the lack of differences between the two groups in the development during early childhood, of psychosocial behaviour and school performance.
对45对异卵双胞胎和同卵双胞胎进行了随访检查，以确定出生体重差异对身心发育的影响。当出生体重较低的组在智力、身高和头围方面得分较低时，可以确定至少650克的“临界”体重差异。我们的研究结果强调，积极的家庭环境是造成两组儿童在幼儿期发育、心理社会行为和学业成绩方面缺乏差异的原因。
