Further validation of the visceral sensitivity index: Psychometric properties and utility for predicting disordered eating in a diverse university sample.

Gastrointestinal (GI) visceral sensitivity (i.e., anxiety/worry over GI sensations) may be a key maintaining factor for disordered eating; however, it is unknown whether GI visceral sensitivity predicts the range of disordered eating behaviors in nonclinical samples. The current preregistered study aimed to replicate previous construct validity findings of the Visceral Sensitivity Index (VSI; i.e., factor structure, convergent and discriminant validity) and examine its criterion-related validity for predicting a range of disordered eating attitudes and behaviors in a diverse undergraduate sample. A total of 591 university students were retained in the final analytic sample (53 % women; 23 % Hispanic [Any Race], 10 % Asian, 9 % Black) and completed the VSI, disordered eating, and additional validity measures. A confirmatory factor analysis tested the factor structure of the VSI, and correlations were used to examine convergent and discriminant validity. Hierarchical regressions and t-tests were used to examine criterion-related validity. Results replicated previous construct validity findings in a diverse undergraduate sample. Exploratory analyses supported invariance of the VSI across gender and the VSI discriminated between individuals at high- versus low-risk for an eating disorder and predicted a range of disordered eating attitudes (e.g., body dissatisfaction) and behaviors (e.g., restricting, binge eating, purging, compulsive exercise). GI-specific anxiety appears to be transdiagnostic across disordered eating behaviors and relevant across the spectrum of disordered eating severity. Future work may include developing transdiagnostic models of GI visceral sensitivity in disordered eating and investigating inclusion of the VSI in university screening efforts.

Unification of the food and alcohol disturbance literature: A systematic review.

Food and alcohol disturbance (FAD) reflects the functional relationship between disordered eating and alcohol use. There are two motivations underlying FAD - to enhance the effects of alcohol and/or to compensate for alcohol-related calories. Yet, most FAD studies have failed to adequately measure the motives underlying these behaviors, leading to inconsistent and imprecise findings. The aim of the current systematic review was to thematically consolidate FAD research findings by motive, identify limitations of the existing literature, and highlight next steps for FAD researchers. Eighty-one publications, presenting data from 38,536 participants, were included in the current review. Prevalence rates for the caloric compensation and alcohol enhancement motives range from 5.6% - 88.7% and 4.7% - 81.7%, respectively. Alcohol use and disordered eating were the primary correlates of FAD for both motives, and alcohol-related consequences were positively associated with both FAD motives cross-sectionally. Major limitations of the literature include inconsistent operationalization and imprecise measurement of FAD. Primary recommendations include adopting the terminology of and operationalization of FAD presented here, ensuring attention to FAD motive in developing and testing research questions, and moving beyond cross-sectional studies. Findings from this review can be used to contribute to more rigorous and unified FAD research.

Perceived Responsibility for Bariatric Surgery, Eating, and Exercise Behaviors Among Adolescent Bariatric Surgery Candidates.

Background: Adolescents' perceived responsibility for weight management behaviors has yet to be studied in relation to bariatric surgery. The current study examined perceived responsibility to pursue bariatric surgery and engage in specific weight management behaviors among adolescents seeking bariatric surgery and its associations with demographic, family support, and eating disorder symptoms. Methods: Data were collected using retrospective chart review of adolescent bariatric surgery candidates presenting to a tertiary interdisciplinary clinic. Data included demographics and adolescents' self-report of (1) perceived responsibility (i.e., primarily adolescent; primarily parent; shared) for the decision to pursue bariatric surgery and weight management behaviors, (2) family support for eating and exercise behaviors, and (3) eating disorder symptoms. Analyses included one-way analysis of covariance, chi-squared tests, and Kruskal-Wallis tests. Results: Participants reporting primarily teen or shared responsibility for seeking bariatric surgery were older than those reporting primarily parent responsibility (p = 0.023). Teens perceiving primary responsibility for their own healthy eating reported less family encouragement for healthy eating (p = 0.011) and more eating disorder symptoms (p = 0.002) than those reporting primarily parent or shared responsibility. Teens reporting primary responsibility for exercise reported less family encouragement for healthy eating (p = 0.012) compared with those reporting shared responsibility. Conclusions: This study is the first to provide a description of health behavior responsibilities in a sample of adolescents with severe obesity seeking bariatric surgery. Not only will these insights improve our understanding of this population, but it can also inform presurgical discussions with adolescents and their parents.

Food approach and avoidance craving: A partial test of the Ambivalence Model of Craving.

Accumulating evidence from both cross-sectional and cue-reactivity studies supports the application of the Ambivalence Model of Craving (AMC) from the substance use literature to food craving. The focus of this extant work has been on the association between the two dimensions of food craving (approach and avoidance) and disordered eating behaviors. The present study extended existing validity data by investigating approach and avoidance food craving profiles and their associations with 1) disordered eating behaviors and 2) thinness/restriction and eating expectancies - a risk factor for disordered eating that is explicitly described by the AMC. It was anticipated that food craving profiles would parallel those defined by the AMC (i.e., approach oriented, avoidance oriented, ambivalent, indifferent) and that profiles defined by high avoidance food craving would be higher in compensatory behaviors, restricting behaviors, and thinness/restriction expectancies, while those defined by high approach food craving would be higher in binge eating and eating expectancies. A sample of 407 undergraduate students (54% female, 47% non-Hispanic White; Mage = 21 years) reported demographics, food craving disordered eating behaviors, and thinness/restriction and eating expectancies via an anonymous online survey. Latent profile analysis was used to test hypotheses. Hypotheses were partially supported. Four profiles were identified, but similar levels of approach and avoidance food craving were observed in each profile, with the intensity of the cravings increasing across the four profiles. Endorsement of disordered eating behaviors and expectancies also increased in intensity across the profiles. Findings suggest an additive, rather than interactive, effect of food craving.

Examining compulsive exercise as a risk factor for eating disorder symptoms in first-year college students using a latent change score modeling approach.

OBJECTIVE: Research suggests that both compulsive exercise and eating disordered behaviors increase during college. Despite strong cross-sectional associations between compulsive exercise and eating disorders, it is unknown if compulsive exercise is a variable risk factor for eating disorders or simply a correlate. It was hypothesized that increases in compulsive exercise would significantly and prospectively predict increases in overall number of eating disorder symptoms over the study period. METHOD: A total of 265 first year college students who did not meet criteria for a full or subthreshold eating disorder diagnosis at Time 1 (age M = 18.15; SD = 0.42; 122 female [46%] at Time 1) completed reports of compulsive exercise and eating disorder symptoms via online questionnaires at four timepoints over the 9-month 2021-2022 academic year (76% retention rate). Hypotheses were tested using a bivariate latent change score model. RESULTS: Hypotheses were not supported. Change in compulsive exercise did not predict change in number of eating disorder symptoms. Change in number of eating disorder symptoms also did not predict change in compulsive exercise. CONCLUSIONS: Compulsive exercise did not emerge as a variable risk factor for the development of eating disorder symptoms among first year college students. The relationship between these behaviors should be investigated at different developmental timepoints, such as early adolescence, and potential third variables that may explain the observed co-occurrence should be explored. PUBLIC SIGNIFICANCE: This study investigated whether increases in compulsive exercise predicted increases in number of eating disorder symptoms among first year college students. Compulsive exercise did not significantly predict number of eating disorder symptoms. Additional research is warranted to clarify the relationship between compulsive exercise and eating disorder symptoms.

Training Promotoras to Implement a Mindfulness-Based Healthy Lifestyle Program in Rural Communities.

Partnering with promotoras to implement a healthy lifestyle intervention has proven efficacious in reaching community members whom they serve. However, there are no clearly defined guidelines for implementing promotora training, especially when it involves developing mindfulness skills in promotoras unfamiliar with this concept. This is a report about the facilitators and barriers to training promotoras to implement a mindfulness-enhanced healthy eating and physical activity intervention, ADAPT+, using the Train-the-Trainer model. Following this model, we laid the foundations for sustained implementation of ADAPT+ even after the training process. Future studies may examine how these guidelines help map promotora training in other mindfulness-related interventions.

Adolescent Females' Dyadic Conversations About Body, Weight, and Appearance.

Body talk among adolescent females has been associated with negative outcomes, including depressed mood, disordered eating, and body dissatisfaction. Yet, little work has investigated the manifestation of body talk in actual conversations between adolescent females or explored pathways through which body talk is spread (e.g., co-rumination). The present study examined body talk among adolescent female dyads (N = 23 dyads) ages 13 to 17 (Mage = 15.12) using an observational design. Reciprocally nominated dyads were recruited from a high school in the southeastern United States. Conversations between dyads were qualitatively coded using an applied thematic analysis approach. Identified themes were related to weight, appearance, and personality. Results provide insight into the social context in which sociocultural norms of weight stigma, body dissatisfaction, and eating-related psychopathology may be reinforced. Findings have implications for informing the development of interventions to reduce co-rumination of negative weight- and appearance-related body talk and to promote positive body image and healthy weight among adolescent girls.

Visceral sensitivity, hunger responsiveness, and satiety responsiveness: Associations between facets of gastrointestinal interoception and disordered eating profiles in an undergraduate sample.

This preregistered study examined associations between empirically derived profiles of disordered eating in a diverse nonclinical sample and three facets of gastrointestinal (GI) interoception (visceral sensitivity, hunger responsiveness, satiety responsiveness). University students (n = 591; 53.3% women; 23.0% Hispanic) completed the Visceral Sensitivity Index, Adult Eating Behavior Questionnaire, and Eating Pathology Symptom Inventory. Latent profile analysis was conducted in Mplus v8.3 with four behavioral indicators (restricting, binge eating, excessive exercise, purging [binary]). Facets of GI interoception predicting odds of disordered eating profile membership compared to an asymptomatic group were evaluated. Five profiles were identified. Facets of GI interoception differentially predicted odds of membership in disordered eating profiles. However, higher scores on all three facets of GI interoception were associated with increased odds of membership in a high disordered eating profile. The relationship between distinct facets of GI interoception and specific disordered eating patterns appears nuanced, though individuals displaying a range of disordered eating behaviors may exhibit broad GI interoceptive dysfunction. Findings are consistent with the recent emphasis on idiographic treatment approaches for disordered eating and may have implications for screening among university students. Prospective longitudinal work and extension to clinical samples is needed.

Comparing Group Versus Individual Prenatal Care on Breastfeeding Practice and Motivational Factors.

OBJECTIVE: Although breastfeeding in the first 6 months postpartum benefits both infants and mothers, breastfeeding rates remain low. This study examined whether group prenatal care was associated with an increased breastfeeding initiation and duration compared with those receiving usual, individual prenatal care. A secondary aim was to investigate whether sociodemographic and motivational factors were associated with breastfeeding initiation and duration across prenatal care groups. METHODS: Pregnant women in their third trimester (n = 211) from an innercity university medical center participated. Prenatal care type was identified from the medical chart, and data on breastfeeding duration at 1, 3, and 6 months postpartum were collected. Breastfeeding motivational factors were assessed with a survey. Logistic regressions and independent-samples t tests were used for data analyses. RESULTS: After controlling for demographic factors, group prenatal care was associated with increased breastfeeding at 6 months postpartum (odds ratio = 2.66; P = .045) compared with individual care. Breastfeeding intention (P < .001), competence (P = .003), and autonomous motivation (P < .001) were significantly higher, while amotivation (P = .034) was significantly lower in group compared with individual prenatal care. CONCLUSIONS: Breastfeeding persistence was higher among women receiving group prenatal care, potentially due to motivational factors. Future studies should investigate how breastfeeding motivational factors could be effectively targeted in prenatal care to increase breastfeeding persistence.

Latin American Trans-ancestry INitiative for OCD genomics (LATINO): Study protocol.

Obsessive-compulsive disorder (OCD) is a debilitating psychiatric disorder. Worldwide, its prevalence is ~2% and its etiology is mostly unknown. Identifying biological factors contributing to OCD will elucidate underlying mechanisms and might contribute to improved treatment outcomes. Genomic studies of OCD are beginning to reveal long-sought risk loci, but >95% of the cases currently in analysis are of homogenous European ancestry. If not addressed, this Eurocentric bias will result in OCD genomic findings being more accurate for individuals of European ancestry than other ancestries, thereby contributing to health disparities in potential future applications of genomics. In this study protocol paper, we describe the Latin American Trans-ancestry INitiative for OCD genomics (LATINO, https://www.latinostudy.org). LATINO is a new network of investigators from across Latin America, the United States, and Canada who have begun to collect DNA and clinical data from 5000 richly phenotyped OCD cases of Latin American ancestry in a culturally sensitive and ethical manner. In this project, we will utilize trans-ancestry genomic analyses to accelerate the identification of OCD risk loci, fine-map putative causal variants, and improve the performance of polygenic risk scores in diverse populations. We will also capitalize on rich clinical data to examine the genetics of treatment response, biologically plausible OCD subtypes, and symptom dimensions. Additionally, LATINO will help elucidate the diversity of the clinical presentations of OCD across cultures through various trainings developed and offered in collaboration with Latin American investigators. We believe this study will advance the important goal of global mental health discovery and equity.

Delivering ADAPT+ to Latino Families Living in Rural Communities: Feasibility and Acceptability of Implementing a Health Promotion Program Including Mindfulness.

BACKGROUND: Obesity is a major public health crisis in Latino youth. Mounting evidence implicates stress in the development and maintenance of obesity. This study examined the feasibility and acceptability of having community health workers, i.e., promotoras, deliver Adaptando Dieta y Acción Para Todos (ADAPT)+, a family-based health promotion program integrating mindfulness strategies for stress reduction to underserved Latino families in rural communities. METHODS: In an ORBIT model Phase IIb longitudinal quasi-cluster feasibility study, promotoras delivered the 6-session ADAPT+ intervention and 1-session Enhanced Usual Care (EUC) in rural Florida. Feasibility was assessed via sample size and recruitment, randomization by community, data collection completion, and intervention fidelity. Acceptability was assessed via participant retention and program satisfaction. Effect sizes of differences in parent stress and mindful eating between conditions at baseline, end of treatment, and 3-month follow-up were calculated. RESULTS: Feasibility and acceptability were demonstrated. The recruitment target was 99% met (n = 95 recruited). Randomization was limited to site level due to coronavirus disease 2019-related challenges. Data collection procedures were feasible (100% completion). Retention was 86% at post-assessment and 82.6% at 3-month follow-up. All sessions were completed (100% fidelity). Mean program satisfaction was 3.91/4.00. ADAPT+ parents reported lower stress (difference = -3.04, medium-to-large effect, d = .70) and more mindful eating (difference = 2.00, medium effect, d = .44) than EUC parents at 3-month follow-up. CONCLUSION: Study implementation and intervention delivery to rural Latino families using promotoras were feasible and acceptable. Promising findings regarding parent stress and mindful eating support a larger (ORBIT Phase III) efficacy trial. CLINICAL TRIAL REGISTRATION: This trial was registered with ClinicalTrials.gov under identifier NCT04800432.

Anxiety, body dissatisfaction, and exercise identity: Differentiating between adaptive and compulsive exercise.

OBJECTIVE: Little is known about psychosocial variables that may be differentially associated with compulsive exercise versus adaptive exercise. The current study simultaneously examined associations of exercise identity, anxiety, and body dissatisfaction with both compulsive and adaptive exercise behaviors and investigated which construct may account for the most unique variance in compulsive and adaptive exercise. Hypotheses were that: 1) body dissatisfaction, anxiety, and exercise identity would be significantly associated with compulsive exercise and 2) exercise identity would be significantly associated with adaptive exercise. METHOD: A total of 446 individuals (50.2 % female) completed reports of compulsive exercise, adaptive exercise, body dissatisfaction, exercise identity, and anxiety via an online survey. Multiple linear regression and dominance analyses were used to test hypotheses. RESULTS: Exercise identity, body dissatisfaction, and anxiety were all significantly associated with compulsive exercise. Only exercise identity and anxiety were significantly associated with adaptive exercise. Dominance analyses suggested that exercise identity accounted for the largest proportion of variance in compulsive (Dominance R2 = 0.27) and adaptive exercise (Dominance R2 = 0.45). CONCLUSION: Exercise identity emerged as the strongest predictor of both compulsive and adaptive exercise. The simultaneous presence of exercise identity, body dissatisfaction, and anxiety may contribute to high risk for engagement in compulsive exercise. Incorporating exercise identity into established eating disorder preventions and treatments may contribute to the reduction of compulsive exercise behaviors.

Latin American Trans-ancestry INitiative for OCD genomics (LATINO): Study Protocol.

Obsessive-compulsive disorder (OCD) is a debilitating psychiatric disorder. Worldwide, its prevalence is ~2% and its etiology is mostly unknown. Identifying biological factors contributing to OCD will elucidate underlying mechanisms and might contribute to improved treatment outcomes. Genomic studies of OCD are beginning to reveal long-sought risk loci, but >95% of the cases currently in analysis are of homogenous European ancestry. If not addressed, this Eurocentric bias will result in OCD genomic findings being more accurate for individuals of European ancestry than other ancestries, thereby contributing to health disparities in potential future applications of genomics. In this study protocol paper, we describe the Latin American Trans-ancestry INitiative for OCD genomics (LATINO, www.latinostudy.org). LATINO is a new network of investigators from across Latin America, the United States, and Canada who have begun to collect DNA and clinical data from 5,000 richly-phenotyped OCD cases of Latin American ancestry in a culturally sensitive and ethical manner. In this project, we will utilize trans-ancestry genomic analyses to accelerate the identification of OCD risk loci, fine-map putative causal variants, and improve the performance of polygenic risk scores in diverse populations. We will also capitalize on rich clinical data to examine the genetics of treatment response, biologically plausible OCD subtypes, and symptom dimensions. Additionally, LATINO will help elucidate the diversity of the clinical presentations of OCD across cultures through various trainings developed and offered in collaboration with Latin American investigators. We believe this study will advance the important goal of global mental health discovery and equity.

Examination of the two-step water load test as a measure of gastric interoception and associations with eating and weight/shape concerns in a nonclinical sample.

OBJECTIVE: The current study extended research examining the validity of the two-step Water Load Test (WLT-II), an objective, laboratory-based measure of gastric interoception, by investigating the validity of the WLT-II in a nonclinical sample and testing its contribution to the prediction of eating and weight/shape concerns. METHODS: Participants (n = 129, 73.6% cisgender female, M = 20.13 years old) completed the WLT-II Questionnaire and two-step WLT-II, as well as self-report measures of eating and weight/shape concerns (Eating Disorder Examination Questionnaire; EDE-Q) and interoception (Multidimensional Assessment of Interoceptive Awareness-2; Intuitive Eating Scale-2 Reliance on Hunger and Satiety), in the lab at a large southeastern university. Data analysis included repeated measures ANOVA, correlations, and a series of hierarchical linear regressions. RESULTS: Participants reported considerably more discomfort after the "maximum fullness" trial compared to the "satiation" trial. The WLT-II's objective measure of gastric interoception (sat_%) was not significantly correlated with the self-report measures of interoception and did not predict EDE-Q Dietary Restraint, Eating Shame, or Weight/Shape Concerns. Unexpectedly, greater gastric sensitivity was associated with less EDE-Q Preoccupation/Restriction. Exploratory analyses suggested a possible nonlinear association. DISCUSSION: These results support the validity of the WLT-II in its ability to create, measure, and distinguish between the states of satiation and maximum fullness. However, results also suggest additional work is needed to better understand what the WLT-II's sat_% measure is capturing, as well as investigate potential nonlinear associations of the WLT-II with disordered eating. PUBLIC SIGNIFICANCE: Interoception, or the processing of internal body signals, shows important links to disordered eating. Despite the clear relevance of gastric interoception to disordered eating-such as the ability to detect satiety signals-existing research has relied on general, self-report measures of interoception. This study examined the utility of a laboratory-based measure of gastric interoception. Results suggested mixed support for its validity and utility for predicting eating and weight/shape concerns in a nonclinical population.

Women's disordered eating and sexual function: the role of interoception.

BACKGROUND: Among women, disordered eating and sexual difficulties commonly co-occur. AIM: We investigated whether interoceptive dysfunction (ie, altered processing of body cues) may be a common cause (ie, third variable) contributing to these concomitant outcomes above and beyond body mass index (BMI) and body image concerns. METHODS: Women (n = 1201; mean age = 25.92 years; mean BMI = 25.46 kg/m2; 61.6% heterosexual, 27.5% bisexual) were recruited from sexual education courses at a midsize southeastern university and Reddit communities related to women's health, sex, and disordered eating. Participants completed online measures of self-reported interoception (Multidimensional Assessment of Interoceptive Awareness Version 2), disordered eating attitudes and behaviors (Eating Disorder Examination Questionnaire), sexual function (Female Sexual Function Index), and demographic information, including height and weight. Regression, commonality, and dominance analyses were completed in R. OUTCOMES: Sexual function was assessed via the Female Sexual Function Index. RESULTS: Both general interoception and body trust (a facet of interoception concerned with trust of internal sensations) predicted dietary restraint and sexual function (Ps < .001). After accounting for both general interoception (ß = 0.27, P < .001) and body trust (ß = 0.32, P < .001) in hierarchal regression models predicting sexual function, dietary restraint either evidenced a reduction in its standardized beta or was no longer associated with sexual function. Body image concerns also emerged as a robust predictor of women's sexual function. Body trust accounted for the most unique variance (4.45%) in women's sexual function and commonly accounted for another 3.70% of variance with body image concerns. CLINICAL IMPLICATIONS: Interoceptive exposure interventions may contribute to better outcomes for women with disordered eating, sexual difficulties, or co-occurring concerns, a notion worthy of future investigation. STRENGTHS AND LIMITATIONS: Strengths include a large diverse sample in terms of sexual orientation (>35% sexual minority) and body size (BMIs from underweight to class 3 obesity). The cross-sectional nature of this study precludes any conclusions regarding temporal precedence or causality. Future studies should use different measures of dietary restraint for nonclinical populations (eg, objective measures of caloric intake). CONCLUSION: Findings suggest that both interoception and body image concerns contribute to the co-occurrence of disordered eating behaviors and sexual difficulties, and that both may be important risk/maintaining factors to consider in future work. Interoception should be integrated into models of women's sexual function, as it may be just as important to women's sexual well-being as body image concerns.

Testing a Biobehavioral Model of Food Insecurity and Chronic Disease in Hispanic Older Adolescents.

The biobehavioral model of food insecurity and chronic disease posits that stress perpetuates the cycle of food insecurity and chronic disease, in part, through changes in eating behaviors and weight gain. The current study conducted a preliminary test of the biobehavioral model in a sample of Hispanic older adolescents. It was hypothesized that older adolescents experiencing food insecurity would report greater depressive symptoms, which would be associated with more disordered eating, which would be associated with worse cardiometabolic indicators. Hispanic older adolescents (N = 113; 60% female; 15-21 years with mean age of 19.1; BMImean = 24.4) completed self-report baseline measures of food insecurity, depression, and disordered eating behaviors as part of a larger experimental study. Anthropometrics and body composition, blood pressure, heart rate, and resting metabolic rate were objectively measured. Hypotheses were tested using structural equation modeling. Experiencing food insecurity was associated with more disordered eating (b = 2.20, p = 0.032). Greater depressive symptoms were associated with more disordered eating (b = 0.28, p = 0.025) and worse cardiometabolic indicators (b = 0.15, p = 0.017). The full biobehavioral model, however, was not supported. Findings underscore the complex interaction of social and psychological functioning and physical health.

Athlete-specific risk factors for the development of disordered eating behaviors in first-year college athletes.

OBJECTIVE: The current study tested whether proposed sport-related risk factors for disordered eating behaviors were associated with increases in disordered eating over first-year college athletes' first four months of collegiate sport participation. PARTICIPANTS: Participants included a sample of first-year college athletes (N = 59, 45% female) from a Division I National Collegiate Athletics Association (DI) university. METHOD: This follow-up study tested whether 1) wearing a uniform that emphasizes body concerns, 2) participating in a lean sport, and 3) perceived pressure for thinness from coaches and teammates would lead to increases in weight/shape concerns and disordered eating behaviors over the first four months of collegiate sport participation. RESULTS: Wearing a uniform that emphasizes body concerns and perceived coach pressure for thinness predicted increases in weight/shape concern. Both teammate and coach pressure for thinness predicted increases in restrained eating behaviors. CONCLUSION: Findings suggest that there are identifiable, athlete-specific risk factors for the development of disordered eating behaviors among first-year college athletes.

Food for thought: Examining the relationship between low calorie density foods in Instagram feeds and disordered eating symptoms among undergraduate women.

BACKGROUND: Ample studies have tested how viewing bodies on social media impacts eating disorder symptoms; however, the relationship between viewing food images on social media and disordered eating remains understudied. This study investigated whether viewing images of healthy, palatable food on Instagram impacted disordered eating attitudes across two samples of undergraduate women. METHODS: This pre-registered online study was conducted at two sites. Participants identifying as female (study 1 n = 222; study 2 n = 214) were randomly assigned to view one of two Instagram feeds - either a feed featuring low calorie, aesthetically pleasing foods or a control condition featuring travel images. Participants completed state measures of disordered eating intentions, self-esteem, and body image before and after viewing the feeds. RESULTS: A main effect of condition on disordered eating intentions was found at the Midwestern site, but not the Southeastern site. CONCLUSIONS: Viewing healthy palatable food images on Instagram could increase risk for disordered eating behaviors among college females. If findings are replicated, individuals vulnerable to disordered eating may benefit from removing these types of feeds from their social media. Further research is needed to determine whether other forms of visual content on Instagram may be associated with disordered eating.

Testing the interaction of thinness/restriction and negative affect reduction expectancies on disordered eating behavior.

OBJECTIVE: Thinness/restriction expectancies (i.e., perceived rewards from thinness/dietary restriction) and negative affect reduction expectancies (i.e., beliefs that eating will reduce negative emotions) are associated with disordered eating, but have largely been studied in isolation despite evidence that individuals can endorse these expectancies simultaneously. Guided by the goal conflict model, we hypothesized that for individuals reporting high levels of one type of expectancy, stronger endorsement of the second expectancy category would be associated with more dietary restriction, binge eating, and compensatory behaviors. A secondary aim included testing an adapted goal conflict model. DESIGN: Interaction effects were tested using multiple linear and negative binomial regressions. Exploratory indirect effect models tested the adapted goal conflict model. Given gender differences, hypotheses were tested separately by gender. MEASURES: Participants (N = 406, 54.2% female, non-Hispanic White = 68.8%, Mage = 20.99, MBMI = 25.05) completed measures of thinness/restriction expectancies, negative affect expectancies, dietary restriction, binge eating, and compensatory behaviors (e.g., purging, laxative/diuretic use, compensatory exercise). RESULTS: No statistically significant interaction of thinness/restriction and negative affect expectancies on disordered eating was observed for either the male or female sample. Main effects models revealed consistent findings across subsamples. Greater thinness/restriction expectancies were associated with more dietary restriction, binge eating, and compensatory behaviors. Greater negative affect reduction expectancies were associated with more binge eating. Exploratory indirect effect models yielded significant effects of each expectancy category on disordered eating. CONCLUSION: Expectancies may be independent risk factors for disordered eating. Disordered eating prevention and intervention efforts may benefit from explicitly targeting thinness/restriction and negative affect expectancies.