Laboratorio de Lenguaje Interacción y Fenomenología, Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, Chile.
PLoS One. 2020 Dec 18;15(12):e0244138. doi: 10.1371/journal.pone.0244138. eCollection 2020.
Infant-adult synchrony has been reported through observational and experimental studies. Nevertheless, synchrony is addressed differently in both cases. While observational studies measure synchrony in spontaneous infant-adult interactions, experimental studies manipulate it, inducing nonspontaneous synchronous and asynchronous interactions. A still unsolved question is to what extent differ spontaneous synchrony from the nonspontaneous one, experimentally elicited. To address this question, we conducted a study to compare synchrony in both interactional contexts. Forty-three 14-month-old infants were randomly assigned to one of two independent groups: (1) the spontaneous interaction context, consisting of a storytime session; and (2) the nonspontaneous interaction context, where an assistant bounced the infant in synchrony with a stranger. We employed an optical motion capture system to accurately track the time and form of synchrony in both contexts. Our findings indicate that synchrony arising in spontaneous exchanges has different traits than synchrony produced in a nonspontaneous interplay. The evidence presented here offers new insights for rethinking the study of infant-adult synchrony and its consequences on child development.
婴儿-成人同步已经通过观察和实验研究得到了报道。然而，在这两种情况下，同步的处理方式是不同的。虽然观察性研究在自发性婴儿-成人互动中测量同步，但实验研究则操纵它，诱发非自发性同步和异步互动。一个尚未解决的问题是，自发同步与实验诱发的非自发性同步在多大程度上不同。为了解决这个问题，我们进行了一项研究，比较了这两种互动情境中的同步性。43 名 14 个月大的婴儿被随机分配到两个独立的组：（1）自发性互动情境，包括故事时间；（2）非自发性互动情境，在这个情境中，一名助手与陌生人一起有节奏地弹动婴儿。我们使用了一个光学运动捕捉系统来准确地跟踪这两种情境中的同步时间和形式。我们的发现表明，自发交流中产生的同步与非自发性互动中产生的同步具有不同的特征。这里呈现的证据为重新思考婴儿-成人同步及其对儿童发展的影响的研究提供了新的见解。
