This course focuses on how, from early in life, people start making judgments and decisions in their social lives—as well as why they can sometimes act in biased and/or sub-optimal ways. Social judgments can take many forms, such as deciding whether someone is real or not real, similar to or different from others, worth trusting or avoiding, better or worse than others, and so on. We will examine the roles that age, mental capacities, and context can play in shaping the ways in which we evaluate other individuals.