de Barbaro Kaya, Johnson Christine M, Forster Deborah, Deák Gedeon O
University of California, San Diego.
Child Dev. 2016 Mar-Apr;87(2):494-512. doi: 10.1111/cdev.12464. Epub 2015 Nov 27.
Previous developmental accounts of joint object activity identify a qualitative "shift" around 9-12 months. In a longitudinal study of 26 dyads, videos of joint object interactions at 4, 6, 9, and 12 months were coded for all targets of gaze and manual activity (at 10 Hz). At 12 months, infants distribute their sensorimotor modalities between objects handled by the parent and others controlled by the infant. Analyses reveal novel trajectories in distributed joint object activity across the 1st year. At 4 months, infants predominantly look at and manipulate a single object, typically held by their mothers. Between 6 and 9 months, infants increasingly decouple their visual and haptic modalities and distribute their attention between objects held by their mothers and by themselves. These previously unreported developments in the distribution of multimodal object activity might "bridge the gap" to coordinated joint activity between 6 and 12 months.
先前关于共同物体活动的发展描述指出，在9至12个月左右会出现质的“转变”。在一项对26对母婴的纵向研究中，对4个月、6个月、9个月和12个月时共同物体互动的视频进行编码，记录所有注视目标和手部活动（以10赫兹的频率）。在12个月时，婴儿会在由父母操作的物体和由婴儿控制的其他物体之间分配其感觉运动方式。分析揭示了第一年中分布式共同物体活动的新轨迹。在4个月时，婴儿主要注视并操作单个物体，通常由母亲拿着。在6至9个月之间，婴儿越来越多地将视觉和触觉方式分离，并将注意力分配在母亲拿着的物体和自己拿着的物体之间。多模态物体活动分布中这些先前未报告的发展可能会“弥合差距”，以实现6至12个月之间的协调共同活动。
