Body-image and eating disturbances prospectively predict increases in depressive symptoms in adolescent girls: A growth curve analysis.

Using data from a longitudinal community study (N?=?231), the authors tested whether body-image and eating disturbances might partially explain the increase in depression observed in adolescent girls. Initial pressure to be thin, thin-ideal internalization, body dissatisfaction, dieting, and bulimic symptoms, but not body mass, predicted subsequent increases in depressive symptoms, as did increases in these risk factors over the study. There was also prospective support for each of the hypothesized mediational relations linking these risk factors to increases in depressive symptoms. Effects remained significant when other established gender-nonspecific risk factors for depression (social support and emotionality) were statistically controlled. Results provide support for the assertion that body-image and eating disturbances, operating above and beyond gender-nonspecific risk factors, contribute to the elevated depression in adolescent girls. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A prospective test of the dual-pathway model of bulimic pathology: Mediating effects of dieting and negative affect.

Because there have been few longitudinal investigations of integrative etiological theories of bulimia nervosa, this study prospectively tested the dual-pathway model using random regression growth curve models and data from a 3-wave community sample of adolescent girls (N?=?231). Initial pressure to be thin and thin-ideal internalization predicted subsequent growth in body dissatisfaction, initial body dissatisfaction predicted growth in dieting and negative affect, and initial dieting and negative affect predicted growth in bulimic symptoms. There was prospective evidence for most of the hypothesized mediational effects. Results are consistent with the assertion that pressure to be thin, thin-ideal internalization, body dissatisfaction, dieting, and negative affect are risk factors for bulimic pathology and provide support for the dual-pathway model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Risk factors for binge eating onset in adolescent girls: A 2-year prospective investigation.

Because little is known about the predictors of binge eating (a risk factor for obesity), a set of putative risk factors for binge eating was investigated in a longitudinal study of adolescent girls. Results verified that binge eating predicted obesity onset. Elevated dieting, pressure to be thin, modeling of eating disturbances, appearance overvaluation, body dissatisfaction, depressive symptoms, emotional eating, body mass, and low self-esteem and social support predicted binge eating onset with 92% accuracy, Classification tree analysis revealed an interaction between appearance overvaluation, body mass, dieting, and depressive symptoms, suggesting qualitatively different pathways to binge eating and identifying subgroups at extreme risk for this outcome. Results support the assertion that these psychosocial and biological factors increase risk for binge eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Risk factors for disordered eating during early and middle adolescence: Prospective evidence from mainland Chinese boys and girls.

Despite evidence that sociocultural and psychological factors contribute to disordered eating, researchers have yet to examine the extent to which putative risk factors influence vulnerability for girls versus boys within and across phases of adolescence, particularly in non-Western cultures. In this study, early and middle adolescent samples from China (N = 2,909) completed measures of eating disorder pathology and putative risk factors at baseline and were reassessed 12 months later. Among both younger and older girls, elevations in appearance-focused interactions with friends, negative affect, and body dissatisfaction predicted increases in symptomatology at follow-up. In contrast, there was more discontinuity in risk factors relevant to samples of boys. Although media and friendship influences contributed to later disturbances among early adolescent boys, psychological factors, including body dissatisfaction and negative affect, had stronger effects in the multivariate model for older boys. Implications of finding are discussed in relation to adolescent development and a Chinese cultural context. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Predictors of adolescent dieting behaviors: A longitudinal study.

Research suggests that dieting is a risk factor for bulimia nervosa, yet little is known about the predictors of dieting. Accordingly, this study examined the correlates and prospective predictors of dieting in a community sample of 320 adolescent females (aged 16–19 yrs). Results indicate that body mass, pressure to be thin, thin-ideal internalization, body dissatisfaction, and binge eating were positively correlated with dieting. Moreover, body mass, pressure to be thin, body dissatisfaction, and binge eating prospectively predicted increased dieting over a 9-mo period. Multivariate analyses revealed that this set of predictors accounted for significant variance in concurrent and subsequent dieting, although only some of the unique effects were significant in the full models. Not only do these findings identify several risk factors for dieting, but they also suggest that dieting may be a response to bulimic pathology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predictors of changes in weight esteem among mainland Chinese adolescents: A longitudinal analysis.

Weight and body image concerns are prevalent among adolescents across cultures and pose significant threats to well-being, yet there is a paucity of longitudinal research on samples living in non-Western and developing countries. This prospective study assessed the extent to which select sociocultural, psychological, and biological risk factors contributed to changes in weight esteem among adolescent girls and boys living in the People’s Republic of China. Students (181 boys, 320 girls) from middle schools and high schools in Southwest China completed measures of demographics; weight esteem; thin female and lean, muscular male appearance ideals; positive and negative affect; and appearance-based social pressure, teasing, and comparison. Subsequently, weight esteem was reassessed 18 months later. Girls having stronger preferences for thin ideals, a high body mass index, and more negative affect at Time 1 were more likely to experience losses of weight esteem at follow-up. Among boys, high baseline levels of appearance pressure contributed to later reductions in weight esteem—an effect that was also moderated by age. For both sexes, appearance social comparisons also contributed to weight esteem changes in univariate analyses, albeit these effects were attenuated within multivariate prediction models. In sum, this study highlights how specific experiences implicated previously in research on body dissatisfaction in Western samples are also salient in understanding changes in weight esteem for adolescent girls and boys in rapidly developing China. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prospective predictors of body dissatisfaction in adolescent girls and boys: A five-year longitudinal study.

This study investigated prospective risk factors for increases in body dissatisfaction in adolescent girls and boys in the Eating Among Teens Project. At the time of first assessment (Time 1), participants were a cohort of early adolescent girls (N=440) and boys (N=366) and a cohort of middle adolescent girls (N=946) and boys (N=764). Participants were followed up 5 years later (Time 2). Potential prospective risk factors examined included body mass index, socioeconomic status, ethnicity, parent dieting environment, peer environment, and psychological factors. Predictors of Time 2 body dissatisfaction were Time 1 body dissatisfaction, body mass index, socioeconomic status, being African American, friend dieting and teasing, self-esteem, and depression. However, the profile of predictors differed across the samples. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Body Image Among Adolescent Girls and Boys: A Longitudinal Study.

This longitudinal study of adolescent girls and boys examined the contributions of social (peer appearance context), psychological (internalized appearance ideals and appearance social comparison), and biological (body mass) factors to the development of body dissatisfaction. Students (165 girls and 139 boys) completed questionnaires when they were either in 7th grade or 10th grade and again 1 year later. The results for the boys revealed a singular pathway to body dissatisfaction through internalized commitment to muscularity ideals. The prospective analyses of change in body dissatisfaction among the girls reflected the contributions of appearance conversations with friends, appearance social comparisons, and body mass. There was no evidence of mediation among the boys and limited support for it among the girls. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Who is the fairest one of all? How evolution guides peer and media influences on female body dissatisfaction.

Much attention has focused on the influence of media images of thin women on body dissatisfaction among female viewers. Disagreement exists regarding the nature of media influences, with meta-analytic results suggesting only small effect sizes. Fewer researchers have focused on the role of peer influences and peer competition on female body dissatisfaction. Furthermore, the relation between body dissatisfaction and eating disorders may be more complex than is often implied in the media effects literature. Links between body dissatisfaction and eating disorders may be overstated, and some eating disorders, primarily anorexia nervosa, may not always be motivated primarily by body dissatisfaction. The current paper discusses these issues from an evolutionary perspective, examining how sociocultural forces influence the intensity of female competition and how such competition effects body dissatisfaction. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Magazine exposure: Internalization, self-objectification, eating attitudes, and body satisfaction in male and female university students.

Investigated the relationships among magazine exposure, self-objectification, body shape dissatisfaction, and eating disorder symptomatology in 150 men and women (aged 18-42 yrs). Women reading beauty magazines and men reading fitness magazines internalized societal ideals (internalization). For women, beauty magazines predicted self-objectification, mediated by internalization. For men, only internalization predicted self-objectification. For men, fitness magazines predicted body shape dissatisfaction, mediated by internalization. For women, only internalization predicted body shape dissatisfaction. Reading magazines also predicted eating problems for men and women, for women this was mediated by internalization. Findings suggest that magazine reading is related to concerns with physical appearance and eating behaviors. Many of the relationships previously found for women are similar for men. A sociocultural model is used to explain these results. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Body image and strategies to lose weight and increase muscle among boys and girls.

This study examined factors that influence body image and strategies to either lose weight or increase muscle among children. Participants were 237 boys and 270 girls. Body mass index (BMI), body dissatisfaction, cognitions and behaviors to both lose weight and increase muscles, as well as self-esteem and positive and negative affect, were evaluated. Self-esteem was associated with body satisfaction, positive affect predicted strategies to lose weight and increase muscles, and negative affect predicted body dissatisfaction and cognitions to lose weight and increase muscles. Boys were more likely to focus on changing muscles. Respondents with higher BMIs were more focused on losing weight but not muscle. The discussion focuses on health risk behaviors related to eating and exercise among children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prospective relations of body image, eating, and affective disturbances to smoking onset in adolescent girls: How Virginia slims.

This study tested whether body image, eating, and affective disturbances prospectively predicted onset of cigarette smoking in adolescent girls (N=496). Elevated body dissatisfaction and eating pathology, as well as elevated negative affectivity, showed significant univariate relations to subsequent onset of smoking. In the multivariate model, the effect for body image and eating disturbances remained significant, but the effect for negative affectivity did not. Results support the theory that body image and eating disturbances markedly increase risk for smoking initiation in adolescent girls and further establish the clinical significance of these disturbances. Results also support the theory that negative affect is a risk factor for smoking initiation but suggest that the self-medication model may have less predictive power than previously concluded. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On models and vases: Body dissatisfaction and proneness to social comparison effects.

When and why do media-portrayed physically attractive women affect perceivers' self-evaluations? In 6 studies, the authors showed that whether such images affect self-evaluations depends jointly on target features and perceiver features. In Study 1, exposure to a physically attractive target, compared with exposure to an equally attractive model, lowered women's self-evaluations. Study 2 showed that body-dissatisfied women, to a greater extent than body-satisfied women, report that they compare their bodies with other women's bodies. In Study 3, body-dissatisfied women, but not body-satisfied women, were affected by both attractive models and nonmodels. Furthermore, in Study 4, it was body-dissatisfied women, rather than body-satisfied women, who evaluated themselves negatively after exposure to a thin (versus a fat) vase. The authors replicated this result in Study 5 by manipulating, instead of measuring, body dissatisfaction. Finally, Study 6 results suggested that body dissatisfaction increases proneness to social comparison effects because body dissatisfaction increases self-activation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Body-image and eating disturbances predict onset of depression among female adolescents: A longitudinal study.

This study examined data from a 4-year school-based longitudinal study (n?=?1,124), to test whether the increase in major depression that occurs among girls during adolescence may be partially explained by the body-image and eating disturbances that emerge after puberty. Elevated body dissatisfaction, dietary restraint, and bulimic symptoms at study entry predicted onset of subsequent depression among initially nondepressed youth in bivariate analyses controlling for initial depressive symptoms. Although the unique effect for body dissatisfaction was not significant in the multivariate model, this set of risk factors was able to fairly accurately foretell which girls would go on to develop major depression. Results were consistent with the assertion that the body-image- and eating-related risk factors that emerge after puberty might contribute to the elevated rates of depression for adolescent girls. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Body fat distribution and hemodynamic stress responses in premenopausal obese women: A preliminary study.

To examine the relationship between body fat distribution and hemodynamic stress responses, cardiovascular responses to a speech task and a forehead cold pressor task were evaluated with 24 premenopausal women classified a priori as either centrally or peripherally obese. Results showed that women with central adiposity exhibited greater stress-related increases in diastolic blood pressure and total peripheral resistance, whereas women with peripheral adiposity exhibited greater stress-related increases in cardiac output. Depression, self-consciousness, hostility, and mood scores did not explain significant variance in the stress response differences between regional adiposity groups. The findings suggest that central adiposity may increase the risk of cardiovascular disease in women at least in part by enhancing vascular responses to stress. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Risk factors for eating disorders.

The authors review research on risk factors for eating disorders, restricting their focus to studies in which clear precedence of the hypothesized risk factor over onset of the disorder is established. They illustrate how studies of sociocultural risk factors and biological factors have progressed on parallel tracks and propose that major advances in understanding the etiology of eating disorders require a new generation of studies that integrate these domains. They discuss how more sophisticated and novel conceptualizations of risk and causal processes may inform both nosology and intervention efforts. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sociocultural factors and the development of disordered eating: A longitudinal analysis of competing hypotheses.

Sociocultural models hypothesize causal paths in the development of eating disorders, yet few longitudinal studies have controlled for temporal stability, leaving open the question as to causality and the directionality of effects. In the present study, the authors tested portions of the socioculturally based dual-pathway model, specifically, the risk factor hypotheses that internalization of the thin ideal predicts body dissatisfaction, that body dissatisfaction predicts depressive affect, and that depressive affect predicts disordered eating. The authors also examined competing hypotheses (e.g., disordered eating predicts depressive affect) as well as the possibility of simultaneous relationships (i.e., variables would be related to one another within a time frame). The 6 models (3 cross-lagged and 3 simultaneous) were evaluated using 236 female freshmen who provided self-report data during their 1st semester in college and 6 months later. While controlling for temporal stability, structural equation modeling revealed that (a) internalization and body image each were related to the other across time; (b) body image was related directionally, but only in the simultaneous context, to depressive affect; and (c) depressive affect and disordered eating were related reciprocally and temporally to one another. Directions for future research and implications for intervention are provided. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An evaluation of a structural model for studies of the initiation of dieting among adolescent girls

A model proposed to elucidate the sociopsychological processes involved in the initiation of dieting behavior among female adolescents was evaluated in the present study. The model incorporates social influence (as modeling, conformity, and compliance), autonomous functioning (as conformity disposition, individuation, self-reliance, and locus of control), skill-related functioning (as interpersonal negotiation skills and social self-efficacy), and parental style (in care and overprotection). It was investigated using path analytic procedures. One hundred forty-eight female high school students, aged between 13 and 16 years, completed a battery of questionnaires and were also interviewed individually. The results emphasized that adolescent dieting needs to be understood as a complex multicausal phenomenon. Adolescents' perceptions of direct pressure from their parents to diet was found to be a significant predictor of dieting, and perceived parental encouragement of autonomy, and self-confidence were associated with less dieting behavior. Moreover, whereas body mass index (BMI) and body dissatisfaction significantly predicted dieting, the three sociopsychological variables remained significant predictors of dieting when taking BMI into account, and perceived parent influence to diet remained a significant predictor when taking body dissatisfaction into account. The effect of autonomous functioning on dieting was mediated by body dissatisfaction. The findings suggest a reformulated model for use in large-scale longitudinal investigations.     

Relationships between the imporatnce and the satisfaction of various environmental factors.

The relationship between the importance of 73 environmental factors and the satisfaction or dissatisfaction which these elicit was investigated for 1935 government employees. Results indicate (a) a V shaped distribution between satisfaction-dissatisfaction and importance; (b) a positive correlation between satisfaction and importance, but a negative correlation between dissatisfaction and importance; and (c) factors of extreme satisfaction or dissatisfaction are more important than mild factors. Findings support a dual theory of self-actualizing and deficiency motivations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)