The term empathy has been used as a label for a broad range of phenomena, including feeling what another person is feeling, understanding another person’s point of view, and imagining oneself in another person’s situation. However, perhaps the most widely researched phenomenon that goes by this label involves an other-oriented emotional state that is congruent with the perceived welfare of another person. The feelings associated with empathy include sympathy, tenderness, and warmth toward the other person. Other variations of empathic emotions have been investigated too, including empathic joy, empathic embarrassment, and empathic anger. The term altruism has also been used as a label for a broad range of phenomena, including any type of helping behavior, personality traits associated with helpful persons, and biological influences that spur protection of genetically related others. However, a particularly fruitful research tradition has focused on altruism as a motivational state with the ultimate goal of protecting or promoting the welfare of a valued other. For example, the empathy–altruism hypothesis claims that empathy (construed as an other-oriented emotional state) evokes altruism (construed as a motivational state). Empathy and altruism, regardless of how they are construed, have important consequences for understanding human behavior in general, and for understanding social relationships and well-being in particular.