Schwartz Carl E, Wright Christopher I, Shin Lisa M, Kagan Jerome, Rauch Scott L
Developmental Psychopathology Research Group, Department of Psychiatry, Massachusetts General Hospital (MGH), Harvard Medical School, 13th Street, Building 149, CNY-9, Charlestown, MA 02129, USA.
Science. 2003 Jun 20;300(5627):1952-3. doi: 10.1126/science.1083703.
Infants with an inhibited temperament tend to develop into children who avoid people, objects, and situations that are novel or unfamiliar, whereas uninhibited children spontaneously approach novel persons, objects, and situations. Behavioral and physiological features of these two temperamental categories are moderately stable from infancy into early adolescence and have been hypothesized to be due, in part, to variation in amygdalar responses to novelty. We found that adults who had been categorized in the second year of life as inhibited, compared with those previously categorized as uninhibited, showed greater functional MRI signal response within the amygdala to novel versus familiar faces.
气质内向的婴儿往往会成长为回避新奇或陌生的人和事物及情境的儿童，而气质外向的儿童则会自发地接近新奇的人和事物及情境。这两种气质类型的行为和生理特征从婴儿期到青春期早期都具有一定程度的稳定性，据推测，部分原因是杏仁核对新奇事物的反应存在差异。我们发现，在生命第二年被归类为气质内向的成年人，与之前被归类为气质外向的成年人相比，杏仁核内对新奇面孔与熟悉面孔的功能性磁共振成像信号反应更强。
