The role of peer influence on girls' body dissatisfaction and dieting / Le rôle de l'influence des pairs sur l'insatisfaction corporelle et le régime amaigrissant des jeunes filles

Peer influence is considered a global construct, although the effects of its various dimensions on body dissatisfaction and dieting via internalisation of the thin ideal and social comparison have yet to be analysed. The aim of this study was to analyse how the different dimensions of peer influence (i.e., perception of teasing, appearance conversation with friends and peer attributions about the importance of appearance with regard to popularity) affect body dissatisfaction and dieting. A total of 298 Italian adolescent girls and young women completed a questionnaire assessing different dimensions of peer influence, internalisation of the thin ideal, social comparison, body dissatisfaction and dieting. The results indicated that peer attributions and appearance conversations with friends affect body dissatisfaction and dieting through internalisation and social comparison. Teasing had a direct effect on girls' dissatisfaction levels. The current findings have important preventive and treatment implications. Preventive interventions should not target sociocultural influences as a whole, rather they should analyse the specific dimensions of peer influence, with consideration for the degree to which girls internalise sociocultural messages and engage in social comparison.