This study examined the characteristics of the vocal behaviors of parents and preterm infants, as compared to their term-born peers, at three months of age. Potential links between specific features of parental IDS and infants’ vocal activity were also sought. We analyzed the frequencies and durations of vocalizations and pauses during the dyadic interactions of 19 preterm and 19 full-term infants with their mothers and fathers. The results showed that the duration of the vocalizations was shorter for the preterm than for the full-term infants, regardless of the interactive partner. Mothers vocalized more frequently and for a longer time than fathers, regardless of the group, but only the frequency of paternal utterances was significantly and positively correlated with the frequency and duration of infant vocalizations. Frequent conversational pauses of a relatively short total duration seemed to be related to more active infants’ vocal participation, regardless of prematurity and parent gender.

这项研究检查了父母和早产儿在三个月大时与其足月出生的同龄人相比的声音行为特征。还寻找了父母 IDS 的特定特征与婴儿发声活动之间的潜在联系。我们分析了 19 名早产儿和 19 名足月儿与其父母的二元互动过程中发声和停顿的频率和持续时间。结果表明，无论互动伙伴如何，早产儿的发声持续时间都比足月儿短。母亲比父亲更频繁地发声，持续时间更长，无论是哪个组，但只有父亲发声的频率与婴儿发声的频率和持续时间呈显着正相关。