Abstract: | Mattering is the extent to which we make a difference in the world around us. People matter simply because: others attend to them (awareness), invest themselves in them (importance), or look to them for resources (reliance). We construct and validate a mattering index, using confirmatory factor analysis. We establish the discriminant validity of the mattering index, using self-consciousness, self-esteem, self-monitoring, alienation, and perceived social support. Finally, we discuss the potential importance of mattering as a dimension of the self-concept. |