Why Smile?: The Science Behind Facial Expressions

When you choose to smile, it often has positive effects on your own mood and social interactions. But some smiles happen in different circumstances—a positive grin is not the same as a bully's smirk or a rival trying to get under you skin. In this book, Marianne LaFrance, an expert on smiles, investigates the complex science and social contexts of smiles. Drawing from her extensive research at Yale and Boston College in medicine, biology, anthropology, and even computer science, she reveals the science behind smiles and their social conditions and consequences.

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