Clark P M, Dickman Z
Acta Genet Med Gemellol (Roma). 1984;33(2):165-71. doi: 10.1017/s0001566000007194.
Twins, more than any other home reared infants, experience intimate and usually continuous interaction with an age-mate from early infancy. The effects of this situation are examined and its implications for both the emotional and cognitive development are discussed in the light of evidence from two studies in which play sessions were video-recorded and subsequently analysed into behavioural categories. The first was a longitudinal study of a single pair of twins, while the second was a short-term study of interaction and cooperation in infants in the 9 to 20 months range. Five pairs of twins, 5 pairs of familiar peers, and the children's mothers were observed playing a structured cooperative game. The hypothesis is advanced that twins enjoy more emotional support but less intellectual stimulation than singletons and it is suggested that social enrichment of the environment of twins could foster social and cognitive development.
与其他任何在家抚养的婴儿相比，双胞胎从婴儿早期就与同龄人经历亲密且通常持续不断的互动。根据两项研究的证据，对这种情况的影响进行了考察，并讨论了其对情感和认知发展的影响。在这两项研究中，游戏环节都进行了视频记录，随后被分析为不同的行为类别。第一项是对一对双胞胎的纵向研究，第二项是对9至20个月大婴儿的互动与合作的短期研究。观察了五对双胞胎、五对熟悉的同龄人以及孩子们的母亲玩一种结构化合作游戏的情况。提出的假设是，与单胎相比，双胞胎获得更多情感支持，但智力刺激较少，并且有人认为丰富双胞胎的环境可以促进其社会和认知发展。
