Form Follows Function: An Investigation Into the Categorical Boundary of Surprise

The concept of basic emotions has been widely accepted in explaining human behavior. Yet, there is still no consensus on the distinctiveness of surprise. This study tried to compare the discreteness of surprise with that of other basic emotions in terms of their categorical distinctiveness. For this study, 27 undergraduates were recruited, and a new set of morphing sequences of different emotional expressions from two young Chinese posers was...