The importance of improving cognitive flexibility in adolescents with anorexia nervosa: The case for cognitive remediation therapy.

OBJECTIVE: Inefficiencies in executive functioning (EF), more specifically cognitive flexibility and an overly detailed processing style, are frequently observed in individuals with Anorexia Nervosa (AN) and have been identified as potential targets in treatment. Cognitive Remediation Therapy (CRT) is an adjunctive treatment approach specifically designed to have a positive impact on EF. Mainly evaluated in adults, CRT has been criticized for its perceived ineffectiveness in promoting weight restoration or directly reducing eating disorder symptoms. METHOD: We argue that we need to refocus our conceptual framework for using CRT as an adjunctive treatment and specifically explore its potential benefit in adolescents. RESULTS: Adolescence is a critical window for EF development during which CRT has the potential to have the most impact. While it may not specifically ameliorate eating disorder symptoms and directly improve weight gain, CRT may mitigate the impact of malnutrition on adolescent brain development, reduce attrition rates in treatment, and improve cognitive flexibility and (indirectly) other maintaining factors, thereby improving global functioning. DISCUSSION: More research needs to be done to understand the development of EF in adolescents with AN and how best to employ CRT as an adjunctive treatment to support development and target maintaining factors. The current article broadly reviews findings on executive functioning inefficiencies in adolescents with AN and discusses the purpose and role of CRT in treating AN. Finally, we highlight key critiques of using CRT and pose questions for future research. PUBLIC SIGNIFICANCE: Treatments targeting executive functioning in adolescents with AN are limited. We need to better understand how CRT can benefit adolescents in treatment. Increasing treatment options, including adjunctive treatments, is necessary to reduce the long-term impact of AN.

Therapeutic Alliance in Family-Based Treatment of Anorexia Nervosa: In-Person Versus Telehealth.

OBJECTIVE: The therapeutic alliance is broadly linked with positive outcomes. However, nearly all research in this area involves in-person therapy, whereas teletherapy has grown increasing common since the COVID-19 pandemic. There is now a pressing need to establish whether the nature and importance of the therapeutic alliance is impacted by teletherapy. This study examined therapeutic alliance in families of youth with anorexia nervosa who were participating in a randomized controlled trial that transitioned from in-person to telehealth visits during the COVID-19 pandemic. METHOD: We analysed data from 53 adolescents and their parents (20 began in-person, 33 began with telehealth). Both parents, youth and therapist completed the Working Alliance Inventory-Short Revised after 4 weeks of treatment. RESULTS: We found no significant differences across telehealth and in-person treatment for paternal or therapist reported data. However, both adolescents and mothers reported higher bond and goal-related alliance for in-person sessions compared to telehealth. CONCLUSIONS: Findings regarding alliance across telehealth and in-person sessions were mixed, with some preference among mothers and youth for in-person treatment. Future studies should determine whether possible adaptations can improve working alliance during family-based treatment for anorexia nervosa via telehealth.

Clinical characterization of Co-morbid autoimmune disease and eating disorders: a retrospective chart review.

Research suggests a link between autoimmune illnesses (AI) and eating disorders (ED). We retrospectively reviewed charts of adolescent patients presenting for eating disorder treatment. We compared the presentation and treatment course for those with an ED and comorbid AI [with (GI-AI, N = 59) or without (non-GI, N = 21) gastrointestinal inflammation] with matched ED-only cases. The sample was overwhelmingly female, with an average age of 15.40. Weight gain trajectories differed across groups, with similar rates of weight gain between controls and non GI-AI cases and with a lower rate of weight gain for individuals with comorbid GI-AI. Over half (56%) of patients reported an AI diagnosis prior to ED; 38% reported an AI diagnosis following ED, and 6% reported ED and AI simultaneous diagnosis. On presentation, ED-only controls had higher rates of comorbid anxiety than cases in either AI group, while those with non-GI AI were more likely to report depression. Mean total GI symptoms, % goal weight at presentation, vital sign instability, and markers of refeeding syndrome did not differ across groups. Health care professionals treating patients with either condition should have a low threshold for asking additional questions to identify the presence of the other condition.

Adaptations of cognitive remediation therapy for adolescents with anorexia nervosa for delivery via telehealth.

OBJECTIVE: The COVID-19 pandemic hastened a transition to treatment delivery via telehealth. While barriers still exist, the increased uptake of telehealth has the potential to increase access to mental health treatment for all diagnoses, including eating disorders. Delivery of evidence-based treatment as well as adjunctive treatments, including those that are hard to find in-person, have been modified to virtual format to increase accessibility and allow for continuity of care for adolescents with anorexia nervosa. METHOD: We describe how to modify and deliver Cognitive Remediation Therapy for youth with anorexia nervosa (CRT-AN) via a telehealth platform. Preliminary and practical guidance for best practice for both group and individual delivery is established. RESULTS: With minimal modifications, CRT-AN can be delivered via telehealth for both individual and group delivery. More disengagement in group delivery was noted; however, overall application of the treatment via a remote platform was observed. DISCUSSION: As more treatment moves to a telehealth format, highlighting how an adjunctive treatment like CRT-AN can combined with other treatments in a telehealth format has the potential to increase research in its implementation and furthermore increase its dissemination. PUBLIC SIGNIFICANCE: Cognitive Remediation Therapy for Anorexia Nervosa (CRT-AN) requires significant manipulation of materials and supplementary human guidance. Suggestions for how to modify CRT-AN for remote delivery via telehealth are provided. Modifications grew out of immediate changes made during the beginning of the COVID-19 pandemic and can be used to inform changes therapists and programs can make to continue to or begin to use CRT-AN in a remote fashion.

Impact of virtual adjunctive cognitive remediation therapy on cognitive flexibility and treatment outcomes in comorbid anorexia nervosa and exercise dependence as quantified using novel biomarkers: A stage 1 registered report.

OBJECTIVE: Anorexia nervosa (AN) is associated with significant individual mental and physical suffering and public health burden and fewer than half of patients recover fully with current treatments. Comorbid exercise dependence (ExD) is common in AN and associated with significantly worse symptom severity and treatment outcomes. Research points to cognitive inflexibility as a prominent executive function inefficiency and transdiagnostic etiologic and maintaining mechanism linking AN and ExD. This study will evaluate the initial efficacy of adjunctive Cognitive Remediation Therapy (CRT), which has been shown to produce cognitive improvements in adults with AN, in targeting cognitive inflexibility in individuals with comorbid AN and ExD. As an exploratory aim, this study also addresses the current lack of quick and cost-effective assessments of cognitive flexibility by establishing the utility of two proposed biomarkers, heart rate variability and salivary oxytocin. METHOD: We will conduct a single-group, within-subjects trial of an established CRT protocol delivered remotely as an adjunct to inpatient or intensive outpatient treatment as usual (TAU) to adult patients (n = 42) with comorbid AN and ExD. Assessments, including self-report, neuropsychological, and biomarker measurements, will occur at three time points. RESULTS: We expect CRT to increase cognitive flexibility transdiagnostically and consequently, along with TAU, positively impact AN and ExD compulsivity and symptom severity, including weight gain. DISCUSSION: Findings will inform the development of more effective integrative interventions for AN and ExD targeting shared mechanisms and facilitate the routine assessment of cognitive flexibility as a transdiagnostic risk and maintaining factor across psychopathologies in clinical and research settings. PUBLIC SIGNIFICANCE: Patients with anorexia nervosa often engage in excessive exercise, leading to harmful outcomes, including increased suicidal behavior. This study examines the preliminary efficacy of an intervention that fosters flexible and holistic thinking in patients with problematic eating and exercise to, along with routine treatment, decrease harmful exercise symptoms. This study also examines new biological markers of the inflexible thinking style thought to be characteristic of anorexia nervosa and exercise dependence.

Modifying an Open Science Online Grocery for parents of youth with anorexia nervosa: A proof-of-concept study.

OBJECTIVE: For youth with anorexia nervosa (AN), remission requires high caloric goals to achieve weight restoration, consumption of a wide variety of calorically dense foods, and reintroduction of eliminated foods. Family-based treatment (FBT), the gold-standard treatment for youth with AN, empowers parents to renourish their child and restore them to health; yet, parents often report struggling with shifting meal planning and grocery shopping behaviors to focus on nutritional rehabilitation and weight restoration. METHODS: This proof-of-concept study aimed to modify a simulated grocery store (Open Science Online Grocery [OSOG]) for parents of youth with AN and explore the acceptability and feasibility of its use as part of standard care. Study staff collaborated with six parent research partners to modify the OSOG prior to piloting it with participants. Participants were 10 parents of youth undergoing a first-time hospitalization for medical stabilization of AN or atypical AN. Parents completed a battery of measures and a semistructured interview assessing the acceptability and feasibility of OSOG. RESULTS: Parents described the tool as credible and acceptable. Qualitative feedback highlighted common themes of caregiver burden, nutrition education, and acceptability of the tool. DISCUSSION: Results point to the need for more work in supporting parents in Phase I of FBT. PUBLIC SIGNIFICANCE: Families are instrumental in supporting youth to recover from anorexia nervosa. During treatment, parents are charged with selecting and serving their adolescent's meals, often requiring them to change grocery shopping and food preparation habits to meet their child's high caloric needs. Parents reported feeling overwhelmed by this task and noted struggling with learning different approaches to nourish their adolescent during an already stressful time. Collaboratively with parents, we modified a tool to support parents in shifting thier shopping habits, which they reported as being a helpful springboard in the early phase of treatment.

Post-traumatic stress symptoms in parents of adolescents hospitalized with Anorexia nervosa.

The current study was a planned secondary analysis to examine post-traumatic stress symptoms (PTSS) in parents of youth hospitalized for medical stabilization due to anorexia nervosa (AN). Questionnaires were administered to 47 parents (34 mothers, 13 fathers; 10 parental dyads) after admission; follow-up occurred at discharge and 4 weeks, 3 months, and 6 months post-discharge. PTSS were present in the majority of mothers (55.9%) and fathers (61.5%). PTSS were not associated with illness severity, but were associated with parental report of mood symptoms, avoidance, inflexibility, and symptom accommodation. Parental PTSS may negatively impact the adolescent rate of weight gain post-discharge. As hospitalization of a child for medical management of AN can be a traumatizing experience for parents, astute attention should be paid by medical staff to their needs. More work needs to be done to understand the impact of PTSS on parents of adolescents with AN.

Social Processing in Eating Disorders: Neuroimaging Paradigms and Research Domain Organizational Constructs.

PURPOSE OF REVIEW: Social and environmental factors have been related to both symptom expression of disordered eating in individuals and changes in the prevalence of eating disorders (EDs) in populations. Neural differences in processing social information may contribute to EDs. This review assesses the evidence for aberrant neural responses during social processing in EDs. RECENT FINDINGS: This review examines how constructs within the social processing domain have been evaluated by neuroimaging paradigms in EDs, including communication, affiliation, and understanding of both oneself and others. Differences related to social processing in EDs include altered processing for self-relevant stimuli, in the context of identity, valence, expectations, and affiliative relationships. Future work is needed to integrate how differences in processing social stimuli relate to alterations in cognitive control and reward as well as specific disordered eating symptoms.

Cultural shifts in the symptoms of Anorexia Nervosa: The case of Orthorexia Nervosa.

Orthorexia Nervosa (ON) is a term describing a fixation on food purity, involving ritualized eating patterns and a rigid avoidance of "unhealthy foods." Those self-identified as having ON tend to focus on food composition and feel immense guilt after eating food deemed "unhealthy." Although not formally recognized as a psychiatric disorder by the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), ON has received increasing attention since its identification in 1997. There is ongoing work to establish diagnostic and empirical tools for measuring ON; embedded in this is the question as to whether or not ON is a new eating disorder. In this paper, we argue ON is not a new psychiatric disorder but rather a new cultural manifestation of anorexia nervosa (AN). We begin by providing an overview of historical representations and classification of eating disorders, with a specific focus on AN. This is followed by discussion of the rise in diet culture and healthism since the 19th century. We conclude by examining the diagnostic validity and utility of ON through a discussion of empirical evidence. Classifying ON under the diagnostic umbrella of AN may improve our understanding of factors underlying restrictive eating behaviors.

Autistic characteristics in youth with anorexia nervosa before and after treatment.

OBJECTIVE: Cognitive characteristics common to autistic individuals are often seen in adults with anorexia nervosa (AN), raising the question of whether autistic people and people with AN may share an endophenotype. We need to examine autistic characteristics during the early stages of AN to accurately parse true symptom co-occurrence from behavioural alterations due to prolonged illness. METHODS: We conducted a post-hoc analysis examining autistic characteristics in 59 youth with AN. Adolescents and parents participating in a randomised-clinical trial for AN completed questionnaires probing autistic characteristics at baseline and treatment end. We categorised participants as above or below cut-offs of clinical indicators of autism using the Autism Probability Index (API) and the Autism Spectrum Quotient-10. RESULTS: Rates of high autistic characteristics ranged between 0% and 36% depending on the instrument used and how the data was obtained (i.e., by informant report or self-report). Paternal report of autistic characteristics differed across treatment completers versus non completers and maternal report indicated lower weight gain for those with elevated characteristics. CONCLUSIONS: Low rates of autism and fluctuations in autistic features during treatment underscore the importance of longitudinal examinations of autistic characteristics in adolescents with AN. Future studies need to replicate findings in a larger adolescent sample. TRIAL REGISTRATION: ClinicalTrails.gov Identifier NCT03928028.

To meat or not to meat: disordered eating and vegetarian status in university students.

PURPOSE: This study sought to examine associations between meat-restricted diets and disordered eating cognitions and behaviors in a large sample of university students and assess the relationships between motivations for choosing a vegetarian or semi-vegetarian diet and eating patterns. METHODS: University students (n = 1585; 60%F, 40%M, mean age 20.9) completed an online survey; students were categorized into vegetarians, semi-vegetarians, and non-vegetarians. Vegetarians and semi-vegetarians were sub-categorized into groups: those who cited weight or health among their reasons for adopting the diet and those who reported other reasons (e.g., religion). Outcomes were Eating Disorder Examination Questionnaire (EDE-Q) scores and rates of disordered eating behaviors. RESULTS: Vegetarians comprised 8.6% (32M, 104F) and semi-vegetarians comprised 3.2% (6M, 45F) of the sample; 25% of vegetarians (n = 34) and 65% of semi-vegetarians (n = 33) chose the diet for weight or health-related reasons. Semi-vegetarians scored the highest on measures of eating disorder cognitions and were the most likely to report engaging in disordered eating behaviors, with vegetarians at intermediate risk and non-vegetarians the least likely to report disordered cognitions or behaviors. Semi-vegetarians adopting the diet for reasons of weight or health were at especially high risk compared to other semi-vegetarians, while no associations were found between motivations for adopting a vegetarian diet and disordered eating patterns. CONCLUSION: Semi-vegetarians, especially those adopting the diet for reasons of weight or health, are more likely to exhibit disordered eating cognitions and behaviors compared to vegetarians and non-vegetarians. LEVEL OF EVIDENCE: Level III, cohort study.

Conducting a Pilot Randomized Controlled Trial on a Medical Inpatient Unit Utilizing Cognitive Remediation Therapy for Adolescents with Restrictive Eating Disorders: Protocol Updates and Reflections on Feasibility.

We conducted a pilot randomized control trial (RCT) to simultaneously examine the feasibility of effectively implementing Cognitive Remediation Therapy (CRT) for adolescents with anorexia nervosa (AN) during medical hospitalization at a single-site hospital center. Employment of this protocol occurred on a general medical unit with diverse medical admitting diagnoses, not an eating disorder floor of a hospital and not part of a structured inpatient anorexia nervosa treatment program. This was the first time an RCT for a psychosocial intervention was implemented on this unit with patients with eating disorders. Here, we describe the process of piloting the study, including modifications that needed to be made to the original protocol. We also describe the feedback from major stakeholders regarding the process of conducting the pilot study. We summarize lessons learned and steps to take for smooth integration of an RCT of a therapeutic intervention on medical unit.Trial registration: ClinicalTrials.gov Identifier NCT02883413.

Sex Differences in Adolescent Anorexia and Bulimia Nervosa: Beyond the Signs and Symptoms.

PURPOSE OF REVIEW: We review research related to sex differences in eating disorders (EDs) in adolescents. Prior work has explored clinical differences; thus, we examine literature in areas identified as playing an etiological or maintenance role in EDs including: genetics, hormones, neurocognitive inefficiencies, and reward circuitry. RECENT FINDINGS: Sex steroids appear to a play role in the unmasking of genetic risk for development of EDs and puberty may be a heightened period of risk for females. While neurocognitive differences have been well studied in adults with ED, research with adolescents has been less conclusive. Recent work suggests that neural circuitry involved in reward and punishment may play role in development and maintenance of EDs in females. Males are underrepresented in these areas of research. Given known sex differences in healthy adolescents, it is likely there are sex differences in the putative biological etiology/maintenance of EDs. Males should be included in future research.

Change in expressed emotion and treatment outcome in adolescent anorexia nervosa.

Expressed emotion (EE) has been associated with poor outcomes in anorexia nervosa (AN); however, whether changes in EE predict superior treatment outcomes is unknown. The current study examined whether decreases in EE during an open trial of a novel family-based treatment for AN predicted symptoms at end of treatment. Forty-seven adolescents (12-18 years of age) with AN or sub-threshold AN and their parents (mothers: n = 47, fathers: n = 39) participated in 6 months of family treatment. Measures of AN symptomatology (Eating Disorder Examination completed by adolescent and end of treatment recovery status) and parental EE (Family Questionnaire completed by parents which measures two facets of EE: critical communication [CC] and emotional over-involvement [EOI]) were collected at baseline and end of treatment. Parental EOI, but not CC, significantly decreased during the course of treatment. Change in mothers', but not fathers', EE accounted for additional variance in AN symptomatology at end of treatment above baseline EE and baseline AN symptom levels. Findings suggest a greater emphasis on parent support during treatment may improve outcomes.

Chocolate craving and disordered eating. Beyond the gender divide?

Chocolate craving in women has previously been linked to disordered eating behaviors. A relatively higher prevalence of eating disorder pathology may account for the fact that chocolate craving is significantly more common in women in North America, compared to many other countries. While support for a causal role of disordered eating in the etiology of craving in women is growing, little is known about the extent to which food cravings are associated with disordered eating behaviors in men. This study was designed to systematically assess the impact of gender and chocolate craving on measures of attitudes to chocolate, responsiveness to food cues in the environment, body shape dissatisfaction, dietary restraint, and eating disorder and general pathology. Undergraduate men and women (n = 645, 37.2% male) were invited to complete self-report questionnaires assessing demographics, height and weight, food cravings, dietary attitudes and behaviors, along with eating disorder and general pathology. Data suggest that the relationship between chocolate craving and disordered eating behaviors in men is the opposite of what has previously been observed in women: compared to non-cravers, male chocolate cravers reported significantly more guilt related to craving, but were significantly less likely to diet and reported lower levels of dietary restraint, less frequent weight fluctuations, and fewer symptoms of eating disorders. Findings indicate that a positive relationship between disordered eating behaviors and chocolate craving may be unique to women (and potentially women in North America). Findings have important implications for our understanding of cultural and psychosocial factors involved in the etiology of food cravings.

Testing the original and the extended dual-pathway model of lack of control over eating in adolescent girls. A two-year longitudinal study.

Stice's (1994, 2001) dual pathway model proposed a mediational sequence that links body dissatisfaction to lack of control over eating through dieting and negative affect. Van Strien et al. (2005) extended the negative affect pathway of the original dual pathway model by adding two additional intervening variables: interoceptive deficits and emotional eating. The purpose of this study was to test and compare the original and extended model using prospective data. Both types of loss of control over eating (i.e., subjective and objective binge eating) were evaluated. Data collected from 361 adolescent girls, who were interviewed and completed self-report measures annually over a 2-year period, were analysed using structural equation modeling. Although both models provided a good fit to the data, the extended model fit the adolescent girls' sample data better and accounted for a greater proportion of variance in binge eating than the original model. All proposed mediational pathways of both models were supported and all indirect effects examined through bootstrap procedure were significant. Although our results confirmed the validity of both models and extended previous findings to an early- to middle adolescent group, the bi-directional relationship between dietary restriction and negative affect suggests that the association between these key risk factors for binge eating are more complex than outlined in both the original and extended dual-pathway models.

A systematic review of the effects of experimental fasting on cognition.

Numerous investigations have been conducted on the impact of short-term fasting on cognition in healthy individuals. Some studies have suggested that fasting is associated with executive function deficits; however, findings have been inconsistent. The lack of consensus regarding the impact of short-term fasting in healthy controls has impeded investigation of the impact of starvation or malnutrition in clinical groups, such as anorexia nervosa (AN). One method of disentangling these effects is to examine acute episodes of starvation experimentally. The present review systematically investigated the impact of short-term fasting on cognition. Studies investigating attentional bias to food-related stimuli were excluded so as to focus on general cognition. Ten articles were included in the review. The combined results are equivocal: several studies report no observable differences as a result of fasting and others show specific deficits on tasks designed to test psychomotor speed, executive function, and mental rotation. This inconsistent profile of fasting in healthy individuals demonstrates the complexity of the role of short-term fasting in cognition; the variety of tasks used, composition of the sample, and type and duration of fasting across studies may also have contributed to the inconsistent profile. Additional focused studies on neuropsychological profiles of healthy individuals are warranted in order to better develop an understanding of the role of hunger in cognition.

Why do only a minority of men report severe levels of eating disorder symptomatology, when so many report substantial body dissatisfaction? Examination of exacerbating factors.

In recent years research employing female samples has indicated that although body dissatisfaction may be necessary for the onset of an eating disorder, it is not sufficient. This study examined body surveillance and difficulties in interpersonal domains (attachment anxiety and social anxiety) as potential moderators of the body dissatisfaction-eating disorder symptomatology relationship amongst Italian college men (N = 359). As expected, all examined variables were found to intensify this relationship such that body dissatisfaction was strongly related to men's eating disorder symptomatology when each moderator was at its highest level (i.e., 1 SD above the mean). Practical implications are discussed.

A clinical trial protocol of a single-session self-guided acceptance-based online intervention targeting food cravings as predictors of disordered eating in pregnant people.

BACKGROUND: Pregnancy is a time of heightened risk for disordered eating behaviors, which are linked to adverse health outcomes in gestation, delivery, and the postpartum. These adverse outcomes may be partially mediated by greater rates of deviation from recommended weight gain trajectories, especially in those who engage in binge and loss of control (LOC) eating. Food cravings are powerful and highly modifiable triggers of binge and LOC eating in non-pregnant populations with preliminary evidence linking cravings to disordered eating behaviors in pregnancy as well. Acceptance-based approaches have been shown to be feasible and effective in reducing the adverse impact of cravings on behavior. PURPOSE: To test the feasibility, acceptability, and preliminary efficacy of a single-session, self-guided, acceptance-based online workshop targeting food cravings as predictors of binge and LOC eating in pregnancy. METHODS: We will conduct a pilot randomized controlled trial of a single-session, self-guided online acceptance-based workshop targeting food cravings in pregnancy. Pregnant individuals in the second trimester (n ≥ 74) endorsing current food cravings will be randomly assigned to the intervention or an untreated control group. The intervention group will participate in a one-hour workshop that imparts skills grounded in Acceptance and Commitment Therapy, including acceptance, defusion, and present-moment awareness. Both groups will complete comprehensive self-report assessments of primary outcomes and hypothesized mediators and moderators of intervention efficacy at baseline, one-month follow-up, and at full-term. CONCLUSION: Results will inform integration of acceptance-based skills targeting food cravings into routine prenatal care to prevent adverse outcomes associated with disordered eating behaviors in pregnancy. TRIAL REGISTRATION: ClinicalTrials.gov identifier NCT06129461; registered on November 10, 2023.

Factor structure of the Eating Disorder Flexibility Index in U.S. nonclinical collegiate and clinical adolescent samples.

Cognitive and behavioral inflexibility are transdiagnostic maintaining mechanisms of varied psychopathologies, including eating disorders (ED). The Eating Disorder Flexibility Index (EDFLIX) is the only psychometrically validated self-report measure of general and ED-specific flexibility in the published literature. The EDFLIX was originally developed in Scandinavian adult clinical and healthy control samples but is increasingly used in its English version in other populations, including adolescent and nonclinical samples, raising questions about its validity and reliability in diverse groups. This study examined the factor structure of the previously published English EDFLIX in undergraduates (n = 578, 57.6 % female, 50.2 % White). Parallel and exploratory factor analysis suggested the EDFLIX may comprise two or three underlying factors. However, follow-up confirmatory factor analyses from nonclinical student and clinical ED-diagnosed (n = 69, 87.0 % female, 91.3 % White) samples did not support either model. Further, EDFLIX scores did not correlate with established neuropsychological measures of cognitive flexibility typically used in prior research on flexibility in EDs. Findings suggest the EDFLIX has poor psychometric properties in certain groups and may not capture underlying aspects of flexibility as previously proposed. Future research should explore alternative versions of the EDFLIX along with its psychometric properties across various samples.