文章基本信息

标题：Itsy Bitsy Spider…: Infants React with Increased Arousal to Spiders and Snakes
本地全文：下载
作者：Hoehl, Stefanie ; Hellmer, Kahl ; Johansson, Maria 等
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2017
卷号：8
页码：1710-1717
DOI：10.3389/fpsyg.2017.01710
出版社：Frontiers Media
摘要：Attention biases have been reported for ancestral threats like spiders and snakes in infants, children, and adults. However, it is currently unclear whether these stimuli induce increased physiological arousal in infants. Here, 6-month-old infants were presented with pictures of spiders and flowers (Study 1, within-subjects), or snakes and fish (Study 1, within-subjects; Study 2, between-subjects). Infants’ pupillary responses linked to activation of the noradrenergic system were measured. Infants reacted with increased pupillary dilation indicating arousal to spiders and snakes compared with flowers and fish. Results support the notion of an evolved preparedness for developing fear of these ancestral threats.
关键词：infants; Pupillary dilation; Arousal; Fear; evolution