Introduction: Eating disorder symptomatology, comprising both psychological and behavioral aspects of subclinical eating concerns, constitutes a clear precursor of developing eating disorders. It is crucial to investigate its antecedents and correlates to subsequently inform eating disorder prevention programs. The present study focused on identity formation, a core developmental task in adolescence, that has increasingly been linked to eating disorder development. Our main aim was to examine the temporal sequence between eating disorder symptomatology and identity formation.Methods: Data on eating disorder symptomatology and identity formation were collected in 530 high school students (at Time 1: mean age = 15 years; SD = 1.84; range: 12–18 years; 50.6% females) using self-report questionnaires at three annual measurement points. Cross-lagged structural equation modeling was performed to examine the directionality of effects.Results: Results indicated bidirectional effects between eating disorder symptomatology and identity formation. Identity confusion seemed to increase vulnerability to body dissatisfaction and bulimia symptoms, whereas identity synthesis seemed to protect against their development. Additionally, identity synthesis seemed to protect against the development of drive for thinness as well. At the same time, body dissatisfaction and bulimia symptoms positively predicted identity confusion and negatively predicted identity synthesis over time.Conclusion: The present study adds to the growing body of literature on identity and eating disorders by focusing on their temporal interplay in a community sample of adolescents. As bidirectional effects emerged, a greater emphasis on identity formation in eating disorder prevention programs is advocated.

Introduction: Research on identity development has primarily studied over-time trends in identity status change and exploration and commitment processes among late adolescents and emerging adults. Identity development in early and mid-adolescents has generally been overlooked. Hence, little is known about how a sense of identity synthesis and confusion evolves from early to late adolescence for boys and girls. Methods: The present cross-sectional study examined gender-moderated age trends in identity synthesis and confusion from ages 12 to 25 among 5860 Belgian adolescents (56.1% girls; Mage = 16.09). In addition, using a subsample of 2782 participants, we investigated associations of identity synthesis and confusion with depressive symptoms in early, mid-, and late adolescents. Results: Mean scores on identity synthesis decreased from ages 12 to 15, subsequently increased from ages 15 to 23, and decreased again later on. Mean scores on identity confusion followed a parallel but opposite cubic trend. Gender differences in these age trends were dependent upon the developmental period. For all age groups, identity synthesis scores were negatively associated with depressive symptoms, whereas positive associations emerged between identity confusion and depressive symptoms. Conclusions: From 12 to 25 years old, individuals experience an increasing sense of identity synthesis and less identity confusion, despite luctuations that appear to be dependent upon the developmental period. Identity synthesis and confusion seem to be strongly negatively and positively associated with depressive symptoms in early, mid-, and late adolescents.

Disturbed eating behavior (DEB) is prevalent in youth with type 1 diabetes and is accompanied by an increased risk for complications, morbidity, and mortality. Prospective studies on DEB in the challenging transition to adulthood are scarce. This longitudinal study examined DEB over a 1-year period and investigated the directionality of effects linking DEB to diabetes-specific functioning and depressive symptoms in adolescents and emerging adults. RESEARCH DESIGN AND METHODS Three hundred youth (16-28 years old) with type 1 diabetes participated in a twowave longitudinal study. Questionnaires measured DEB (Diabetes Eating Problem Survey-Revised [DEPS-R]), self-management, diabetes distress, and depressive symptoms. HbA 1c values were obtained from physicians. Mixed ANOVA and crosslagged analysis were used to examine prospective changes and directionality of effects, respectively. RESULTS Mean DEB remained stable in the total sample, but significant individual differences were observed based on the cutoff score of the DEPS-R: 19% displayed persistent DEB and 8% increased and 7.3% decreased in DEB over time. The remaining individuals scored low on DEB over time. These four groups were differentiated based on insulin restriction, omission, diabetes-specific functioning, and depressive symptoms. Cross-lagged analyses indicated that DEB predicted relative increases in depressive symptoms over time, whereas reciprocal associations with glycemic control were found. CONCLUSIONS This longitudinal study highlights the substantial impact DEB may have in the transition to adulthood, with a substantial portion of youth with type 1 diabetes being at risk for clinical DEB. Prospective pathways linking DEB to functioning were found, emphasizing the clinical relevance of assessing DEB over time. Type 1 diabetes constitutes a risk factor for developing disturbed eating behavior (DEB), including unhealthy weight-management behaviors, such as skipping meals, binge eating, and purging, as well as more severe eating disorders (1,2). DEB constitutes a substantial concern, as up to 30% of adolescent girls with type 1 diabetes display DEB (3-5

The process of identity formation can cause a considerable amount of distress leading to pathological forms of identity distress. The present study examined age trends in identity distress and associations with identity exploration and commitment in a sample of 2,286 Flemish adolescents and emerging adults (14–30 years, 55.7% females). Important and theoretically meaningful age trends in identity distress were uncovered. More specifically, identity distress demonstrated a curvilinear trend with the highest levels of distress occurring in emerging adulthood. Concerning the associations between identity distress and identity processes, we found differences among the age periods studied. Identity distress was especially positively related to exploration in breadth and negatively to commitment making in the late 20s, but less so in adolescence and the early 20s. In sum, these results provide important insights into identity distress throughout adolescence and emerging adulthood. Theoretical implications, limitations, and suggestions for future research are discussed.

Emerging evidence highlights the intricate link between identity and one’s body, however, integrative longitudinal research on this identity-body interplay is lacking. The current study used three-wave longitudinal data (Time 1: N = 403; 52.1% female; M age = 14.85, SD = 0.89, range = 13–19 years) spanning two years (2019–2021; T1 and T2 being pre-pandemic, T3 peri-pandemic) to identify identity trajectory classes and examine their co-development with negative and positive body image and various body-related variables (i.e., sociocultural pressures, internalization of appearance ideals, self-objectification, appearance comparison, and eating disorder symptoms). First, four identity classes emerged using latent class growth analysis (achievement, moratorium, carefree diffusion, and troubled diffusion). Second, using multigroup latent growth curve modeling, adolescents in less adaptive identity trajectory classes (i.e., engaging less in pro-active processes and more in ruminative processes) displayed higher levels of negative body image and body-related symptoms. The current study testified to the clinically meaningful associations linking identity formation to adolescents’ body image and other body-related symptoms.

Introduction: Adolescence is the most critical life period for the development of eating disorder (ED) symptomatology. Although problems in identity functioning and emotion dysregulation have been proven important risk and maintaining factors of ED symptomatology, they have never been integrated in a longitudinal study.Methods: The present study is part of the Longitudinal Identity research in Adolescence (LIA)-study and aimed to uncover the temporal interplay between identity functioning, cognitive emotion regulation, and ED symptomatology in adolescence. A total of 2,162 community adolescents (Time 1: 54% female; Mage = 14.58, SD = 1.88, range = 10–21 years) participated at three measurement points with 1-year intervals. They reported on identity functioning (identity synthesis and identity confusion), cognitive emotion regulation (rumination, catastrophizing, and positive reappraisal), and ED symptomatology (drive for thinness and bulimia symptoms).Results: Cross-lagged paths could be fixed for boys and girls and showed bidirectional associations between both dimensions of identity functioning and both rumination and catastrophizing over time. Similarly, these maladaptive cognitive emotion regulation strategies were bidirectionally related to ED symptomatology over time. Finally, indirect pathways pointed to bidirectional associations between both dimensions of identity functioning and bulimia symptoms through rumination and catastrophizing. Only unidirectional associations emerged for drive for thinness and almost no cross-lagged associations were found with positive reappraisal.Conclusion: The present study demonstrates that identity confusion may contribute to the development of ED symptomatology in adolescence through cognitive emotion dysregulation. It also reveals that these ED symptoms hamper identity development through emotion dysregulation. These results stress the importance of targeting both identity functioning and cognitive emotion regulation in the prevention and intervention of ED symptoms.

Eating disorder symptomatology generally develops during adolescence and emerging adulthood. Previous research has focused on the role of identity formation or body image in the development of eating disorder symptomatology, but integrative work is lacking. For this reason, the present cross-sectional study examined the mediating role of body dissatisfaction in the relation between identity formation and eating disorder symptomatology. Method: The sample comprised 659 participants between 15 and 30 years old (68.9% females; M age = 19.44; SD age = 3.99). All participants completed self-report measures on identity (Self-concept and Identity Measure), body dissatisfaction (the Body Image Feelings and Attitudes subscale of the Body Investment Scale and the Body Dissatisfaction subscale of the Eating Disorder Inventory-3), and eating disorder symptomatology (Eating Disorder Inventory-3). Latent variable modeling from a structural equation modeling approach was used. Results: First, identity formation significantly predicted eating disorder symptomatology. Additionally, indirect effects were found linking identity formation to eating disorder symptomatology through the mechanism of body dissatisfaction. No significant differences between males and females or between adolescents and emerging adults on direct or indirect effects were found. Conclusion: The present study indicated that body dissatisfaction mediated the relationship between identity formation and eating disorder symptomatology during mid-to-late adolescence and emerging adulthood. Provided that the present findings can be replicated in a future longitudinal study, they demonstrate that both identity formation and body dissatisfaction should be taken into account in prevention and intervention programs targeting eating disorder symptomatology.

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