Braarud Hanne Cecilie, Stormark Kjell Morten
Centre for Child and Adolescent Mental Health, University of Bergen, P.O. Box 7800, 5020 Bergen, Norway.
Infant Behav Dev. 2006 Jan;29(1):70-9. doi: 10.1016/j.infbeh.2005.08.008. Epub 2005 Oct 26.
The relation between maternal soothing and infant stress response during inoculation was examined in a sample of 37 mothers and their 3-month-old infants. The mothers' soothing and the infants' cry vocalizations and the mothers' and the infants' salivary cortisol level pre- and post-injection were analysed. There was a positive relation between infants' cry vocalization post-injection and maternal soothing pre- and post-injection. The sample was divided in two sub-groups depending on whether the mothers evidenced most soothing of the infants in the period before (Preparatory group; n=20) or after (Contingent group; n=17) the syringe injection. In the Preparatory group, the duration of infant cry vocalizations was related to amount of maternal soothing before and after the injection, while cry vocalizations in the Contingent group was related to amount of maternal soothing after the injection. The Contingent infants responded to the injection with a significant increase in cortisol, while there was no increase in the Preparatory infants. The Preparatory infants evidenced significantly longer duration of looking at the target stimuli in a visual marking task, suggesting greater difficulties in disengaging attention. These findings indicate that 3-month-olds' stress responses and their mothers' situational behaviour are mutually regulated.
在一个由37位母亲及其3个月大婴儿组成的样本中，研究了接种疫苗期间母亲的安抚与婴儿应激反应之间的关系。分析了母亲的安抚行为、婴儿的哭声以及注射前后母亲和婴儿唾液中的皮质醇水平。注射后婴儿的哭声与注射前后母亲的安抚行为呈正相关。根据母亲在注射器注射前（准备组；n = 20）还是注射后（应急组；n = 17）对婴儿进行最多安抚，将样本分为两个亚组。在准备组中，婴儿哭声的持续时间与注射前后母亲的安抚量有关，而应急组中婴儿的哭声与注射后母亲的安抚量有关。应急组婴儿注射后皮质醇显著增加，而准备组婴儿则没有增加。准备组婴儿在视觉标记任务中注视目标刺激的持续时间明显更长，表明在注意力分散方面存在更大困难。这些发现表明，3个月大婴儿的应激反应与其母亲的情境行为是相互调节的。
