 A second type of study involves investigating the causes and correlates of happiness, well-being, and life-satisfaction. These experiments look at the conditions under which people report positive affect or life-satisfaction, as well as the conditions under which they judge that their lives are going well. This is distinct from the first type of research, since the fact that someone reports an experience as being pleasurable does not necessarily tell us whether they would judge that experience to be pleasurable for someone else; there may be asymmetries in first- and third-person evaluations. Furthermore, this type of research can tell us how various candidates contribute to well-being from a first-person perspective, but that doesn’t settle the question of the concept of a good life. I might judge that my life is going well, yet fail to notice that I am doing so because I am in a very good mood, and that in fact I am not accomplishing any of my goals; if confronted with another person in a similar situation, I might not make the same judgment. Which of these judgments best represents our concept of well-being is a tricky question, and a normative one since experimental evidence alone may not settle it. As it turns out, experiments have uncovered a number of factors that influence our own reports and assessments of pleasure and well-being. We will discuss two areas of research in particular: reports of pleasures and pains, and judgments of life satisfaction.