This study examined 7-to-13.5-month-old middle-class Western infants’ visual orienting to third-party interactions in parallel with their social attention behavior during own social interactions (Leipzig, Germany). In Experiment 1, 9.5- to-11-month-olds (n = 20) looked longer than 7- to-8.5-month-olds (n = 20) at videos showing two adults interacting with one another when simultaneously presented with a scene showing two adults acting individually. Moreover, older infants showed higher social engagement (including joint attention) during parent–infant free play. Experiment 2 replicated this age-related increase in both measures and showed that it follows continuous trajectories from 7 to 13.5 months (n = 50). This suggests that infants’ attentional orienting to others’ interactions coincides with parallel developments in their social attention behavior during own social interactions.

中文翻译：

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婴儿对社交互动的偏好从 7 个月增加到 13 个月

这项研究检查了 7 到 13.5 个月大的中产阶级西方婴儿在自己的社交互动中的社会关注行为与第三方互动的视觉定向（莱比锡，德国）。在实验1中，9.5-至11个月婴儿（Ñ  = 20）看起来长于7-至8.5个月婴儿（Ñ 在示出两个成人彼此互动视频= 20）当与场景同时呈现显示两个成年人单独行动。此外，较大的婴儿在亲子自由游戏中表现出更高的社会参与度（包括共同关注）。实验 2 在两种测量中复制了这种与年龄相关的增长，并表明它遵循从 7 到 13.5 个月的连续轨迹（n = 50)。这表明婴儿对他人互动的注意导向与他们在自己的社交互动中的社会注意行为的平行发展相吻合。