As the title suggests, this book examines the psychology of interpersonal relations. In the context of this book, the term "interpersonal relations" denotes relations between a few, usually between two, people. How one person thinks and feels about another person, how he perceives him and what he does to him, what he expects him to do or think, how he reacts to the actions of the other--these are some of the phenomena that will be treated. Our concern will be with "surface" matters, the events that occur in everyday life on a conscious level, rather than with the unconscious processes studied by psychoanalysis in "depth" psychology. These intuitively understood and "obvious" human relations can, as we shall see, be just as challenging and psychologically significant as the deeper and stranger phenomena. The discussion will center on the person as the basic unit to be investigated. That is to say, the two-person group and its properties as a superindividual unit will not be the focus of attention. Of course, in dealing with the person as a member of a dyad, he cannot be described as a lone subject in an impersonal environment, but must be represented as standing in relation to and interacting with another person. The chapter topics included in this book include: Perceiving the Other Person; The Other Person as Perceiver; The Naive Analysis of Action; Desire and Pleasure; Environmental Effects; Sentiment; Ought and Value; Request and Command; Benefit and Harm; and Reaction to the Lot of the Other Person