The document summarizes key concepts from Chapter 13 of David Myers' 8th Edition Psychology textbook on the topic of emotion. It discusses several theories of emotion including embodied emotion, the James-Lange theory, Cannon-Bard theory, and two-factor theory. It also covers expressed emotion, culture and emotion, physiological responses to specific emotions like fear, anger and happiness, and factors that influence subjective well-being and happiness like wealth, values, and social comparisons.