In sociology and psychology, self-esteem reflects a person’s overall subjective emotional evaluation of his or her own worth. It is a judgment of oneself as well as an attitude toward the self. Self-esteem encompasses beliefs about oneself, (for example, “I am competent”, “I am worthy”), as well as emotional states, such as triumph, despair, pride, and shame. Smith and Mackie (2007) defined it by saying “The self-concept is what we think about the self; self-esteem, is the positive or negative evaluations of the self, as in how we feel about it.”:107 Self-esteem is attractive as a social psychological construct because researchers have conceptualized it as an influential predictor of certain outcomes, such as academic achievement, happiness, satisfaction in marriage and relationships, and criminal behaviour. Self-esteem can apply specifically to a particular dimension (for example, “I believe I am a good writer and feel happy about that”) or a global extent (for example, “I believe I am a bad person, and feel bad about myself in general”). Psychologists usually regard self-esteem as an enduring personality characteristic (“trait” self-esteem), though normal, short-term variations (“state” self-esteem) also exist. Synonyms or near-synonyms of self-esteem include: self-worth, self-regard, self-respect, and self-integrity.