Neuroscientists and cognitive scientists have collaborated for more than a decade with the common goal of understanding how the mind works. These collaborations have helped unravel puzzles of the mind, including aspects of perception, imagery, attention, and memory. Many aspects of the mind, however, require a more comprehensive approach to reveal the mystery of mind-brain connections. Attraction, altruism, speech recognition, affiliation, attachment, attitudes, identification, kin recognition, cooperation, competition, empathy, sexuality, communication, dominance, persuasion, obedience, morality, contagion, nurturance, violence, and person memory are just a few. Through classic and contemporary articles and reviews, "Social Neuroscience: Key Readings" illustrates the complementary nature of social, cognitive, and biological levels of analysis and how research integrating these levels can foster more comprehensive theories of the mechanisms underlying complex behavior and the mind.