The Trajectory of Concurrent Motor and Vocal Behaviors Over the Transition to Crawling in Infancy
The Trajectory of Concurrent Motor and Vocal Behaviors Over the Transition to Crawling in Infancy
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DOI：
10.1111/infa.12179
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发表时间：
2017-09-01
期刊：
影响因子：
2.6
通讯作者：
Iverson, Jana M.
中科院分区：
文献类型：
--
作者：
Berger, Sarah E.;Cunsolo, Marian;Iverson, Jana M.
为了记录运动和发声行为在真实和发展时间的轨迹，我们观察了婴儿在四个两周一次的自然游戏课程中从爬行到爬行的转变。一个详尽且互斥的编码方案记录了所有的发声和姿势。给定姿势-发声二联体的可能性的赔率比表明，发声和爬行在标志着爬行开始的那段时间不太可能同时发生。我们推测，婴儿在向爬行过渡过程中的注意力分配促使了行为上的权衡。在掌握一项新技能的过程中，婴儿可能很难将注意力分配到多项任务上，但随着经验的推移，新技能的注意力负荷减少，其他领域的同时行为也会发生。
To document the trajectory of motor and vocal behaviors in real and developmental time, we observed infants at each of four biweekly naturalistic play sessions over the transition to crawling. An exhaustive and mutually exclusive coding scheme documented all vocalizations and postures. Odds ratios of the likelihood of a given posture-vocalization dyad revealed that vocalization and crawling were significantly unlikely to co-occur at the session marking the onset of crawling. We speculate that infants' allocation of attention over the transition to crawling prompted behavioral trade-offs. During mastery of a novel skill, infants may have had difficulty allocating attention to multiple tasks, but with experience, a decrease in attentional load for the new skill allowed performance of simultaneous behaviors in other domains to occur.