Description:The first of its kind, this study analyzes the complex interpersonal relations in terms of a few basic elements and factors. The author deals with perception, common sense ideas, the effects of action, the psychology of motivation, ability, exertion, and environmental difficulty. Also discussed are liking and disliking, the role of values and norms in interpersonal relations, the action of inducing a person to do something, positive and negative reractions, and the problem of retribution.