Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 4

Specific inherited facial patterns or expressions that signal specific feelings or emotional states across cultures, such as a smile signaling a happy « state, are called (a) _____. These emotional expressions, which include anger, happiness, fear, surprise, disgust, sadness, and possibly contempt, are thought to have evolved because they had important (b) _____ and _____ functions for our ancestors.