the degree to which the characteristics of a person’s ideal self match his or her actual characteristics. The discrepancy (or incongruence) between the two, when large enough, creates psychological pain; it is theorized to be a motivating force for entering psychotherapy and is the focus of treatment in client-centered therapy. In research studies, it can be measured by having participants sort cards describing themselves as they would like to be and as they are (see self-ideal Q sort).