Psychometric properties of a Silhouette Rating Scale assessing current and ideal body size and body dissatisfaction in adults.

Purpose: The study aims at validating a new pictorial tool, the Silhouette Rating Scale (SRS). It consists of a series of nine female or male silhouettes. It was created to assess current and ideal body size evaluation, and body dissatisfaction. Our aims were to test the concurrent, convergent and discriminant validity of the scale, evaluating possible gender differences.

Method: A first sample of 754 young adults (age M = 26.10 ± 8.50, males N = 218) and a second sample of 210 young adults (age M = 21.19 ± 3.22, males = 43) completed the SRS, and other self-report measures assessing body size evaluation, disordered eating, body satisfaction, depression, emotion regulation and insomnia.

Results: Statistical analyses performed on the first sample largely support the concurrent validity of the scale. Results obtained from the second sample confirm its convergent validity, showing strong correlations with the Contour Drawing Rating Scale. In addition, the correlations performed between the three responses of the SRS and other measures of eating disorders, depression, insomnia and emotion regulation indicated a good discriminant validity, though some of the variables measured seem to be significantly correlated.

Conclusions: The SRS is a reliable and valid tool for assessing current body size, body ideal and body dissatisfaction as compared to other widely used scales. It guarantees the universality of use thanks to the absence of details related to ethnicity or culture and at the same time, maintaining a right level of realism. Future studies will evaluate test-retest validity and its potential within clinical populations.

Leve Of Evidence: V, descriptive cross sectional study.