Preschooler's faces in spontaneous emotional contexts-how well do they match adult facial expression prototypes?

Prototypical facial expressions of emotion, also known as universal facial expressions, are the underpinnings of most research concerning recognition of emotions in both adults and children. Data on natural occurrences of these prototypes in natural emotional contexts are rare and difficult to obtain in adults. By recording naturalistic observations targeted at emotional contexts in day-to-day kindergarten activities, we investigated the spontaneous facial behavior of 3-year-old children in order to explore associations between context and facial activity and verify the degree of matching between the well-known adult prototypes and facial configurations actually produced by children. When taken individually, most facial actions matched those that comprise the respective emotion prototypical face, but full facial configurations with all characteristic facial actions were scarce but for joy.