Narcissism and self-esteem as protective constructs in overweight and non-overweight adults

Introduction and objective: This study aimed to investigate the relationship between narcissism as a dimension of personality and self-esteem in overweight and non-overweight adults. A secondary aim was to compare narcissism and self-esteem between overweight and non-overweight individuals. Materials and methods: A sample of 215 adult participants from the general population aged 18–65 years (M = 28.62; SD = 9.81) took part in the study. Overweight individuals comprised 44% (n = 95) and non-overweight individuals 56% (n = 120). The subjects completed two questionnaires (Polish adaptations): the Multidimensional Self-Esteem Inventory – MSEI and the Narcissistic Personality Inventory – NPI. Results: The analysis of the data shows that general narcissism correlates positively with general self-esteem in overweight and non-overweight individuals. In both groups, general narcissism correlates positively and strongly with self-esteem components, such as physical attractiveness and leadership ability. There were no significant differences in narcissism and general self-esteem between the two groups. However, non-overweight individuals scored statistically higher on self-esteem components such as competence, moral self-acceptance, body appearance and vitality. Conclusions: The results suggest psychological implications for working with overweight and non-overweight individuals in dealing with standards of thinness in sociocultural narcissism. In this context, it is recommended to strengthen beliefs in competence i.e. abilities, skills, uniqueness, and effectiveness in performing tasks, providing a basis for success.