Conference Program

The "roads less travelled": Approaches to designing outcome studies in eating disorders

Tracey Wade. Flinders University

Introduction

Kendra Becker^{1, 2}. ¹Massachusetts General Hospital .²Harvard Medical School

Emotion coaching skills as an augmentation to family based therapy for adolescents with anorexia nervosa: Results from a pilot effectiveness study

Claire Aarnio-Peterson. Cincinnati Children's Hospital Medical Center

Guided Self-Help Family-Based Treatment (GSH-FBT) for Adolescent Anorexia Nervosa: An Opportunity for Greater Dissemination and Reach

Jennifer Couturier. McMaster University

Challenges in Implementing online Training for Family-based Treatment for adolescent Anorexia Nervosa for Clinicians in Private Practice

Jim Lock. Stanford University

Virtual Based Eating Disorder Treatment Improves Access to Care

Cara Bohon. Equip Health, Stanford University

Discussion

Kendra Becker^{1, 2}. ¹Massachusetts General Hospital .²Harvard Medical School

Q&A

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GENOME-WIDE ANALYSIS OF A MODEL-DERIVED BINGE-EATING DISORDER PHENOTYPE IDENTIFIES RISK LOCI AND IMPLICATES IRON METABOLISM

Trevor C Griffen¹, David Burstein^2-8, Karen Therrien^2-8, Jaroslav Bendl^2-7, Sanan Venkatesh^2-8, Pengfei Dong^2-7, Amirhossein Modabbernia², Biao Zeng^2-7, Deepika Mathur^2-7, Gabriel Hoffman^2-7, Robyn Sysko^{2, 9}, Tom Hildebrandt^{2, 9}, Georgios Voloudakis^2-8, Panos Roussos^{2-8, 10}. ¹Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA.²Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.³Center for Disease Neurogenomics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.⁴Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.⁵Department of Genetics and Genomic Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA.⁶Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.⁷Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, USA.⁸Mental Illness Research, Education, and Clinical Center (VISN 2 South), James J. Peters VA Medical Center, Bronx, NY, USA.⁹Center of Excellence in Eating and Weight Disorders, Icahn School of Medicine at Mount Sinai, New York, NY, USA

"You Can't Be Too Skinny. You Can't Be Too Fat. I Don't Know What You Are Supposed To Be.": A qualitative focus group study exploring body image experiences of South Asian women in the UK

Fidan Turk¹, Ankita Mishra², Nadia Craddock ³, Jamie Chan⁴, Rosiel Elwyn⁵, Silvia Cerea⁶. ¹Ege University, Izmir, Turkey.²University of Sheffield, Sheffield, United Kingdom.³University of the West of England, Bristol, United Kingdom.⁴University of Sussex, Sussex, United Kingdom.⁵Thompson Institute, University of the Sunshine Coast, Birtinya, Australia.⁶Department of General Psychology, University of Padova, Italy, Padua, Italy

PROSPECTIVE ASSOCIATIONS BETWEEN COGNITIVE FLEXIBILITY AND EATING DISORDER SYMPTOMS IN ANOREXIA NERVOSA AND BULIMIA NERVOSA

Elizabeth N Dougherty¹, Angeline R Bottera¹, Glen Forester², Lauren M Schaefer^{2, 3}, Erica E Forbes⁴, Jennifer E Wildes¹. ¹Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL, USA.²Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.³Department of Psychiatry, University of North of North Dakota School of Medicine and Health Sciences, Grand Forks, ND, USA.⁴Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA

Mapping co-occurringmental andphysical conditions in 600 individuals with avoidant restrictive food intake disorder

Lisa Dinkler¹, Marie-Louis Wronski^{1, 2, 3}, Miriam I Martini¹, Paul Lichtenstein¹, Sebastian Lundstrom⁴, Henrik Larsson^{1, 5}, Nadia Micali^{6, 7}, Mark J Taylor¹, Cynthia M Bulik^{1, 8, 9}. ¹Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.²Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, TU Dresden, Dresden, Germany.³Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.⁴Gillberg Neuropsychiatry Centre, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.⁵School of Medical Sciences, Orebro University, Orebro, Sweden.⁶Center for Eating and Feeding Disorders Research, Mental Health Services in the Capital Region of Denmark, Eating Disorders Research Unit, Psychiatric Centre Ballerup, Copenhagen, Denmark.⁷Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.⁸Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.⁹Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA

Anti-inflammatory Activity of Estradiol as a Therapeutic Opportunity for Anorexia Nervosa: Evidence from Peripheral Blood-Based Biomarkers, In Vivo Imaging of the Brain Barrier, and Extracellular Free Water

Lauren Breithaupt^{1, 2, 5}, Chunni Ji³, Jil Wednt⁴, Laura Holsen^{6, 1}, Amanda Lyall^{1, 5}, Johanna Seitz-Holland^{1, 5}, Felicia Petterway³, Youngjung R Kim^{1, 2}, Kendra Becker³, Steven Arnold^{1, 8}, Jennifer J. Thomas^{1, 2}, Franziska Plessow^{1, 3}, Elizabeth A Lawson^{1, 3}, Marek Kubicki^{1, 5}, Madhusmita Misra^{3, 1}, Kamryn T Eddy^{1, 2, 7} . ¹Harvard Medical School, Boston, MA, USA.²Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.³Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, USA.⁴Technical University Munich, Munchen, Germany.⁵Psychiatry Neuroimaging Laboratory, Brigham and Women, Boston, MA, USA.⁶Division of Women, Boston, MA, USA.⁷Division of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA, USA.⁸Department of Neurology, Massachusetts General Hospital, Boston, MA, USA

Oxytocin Increases Negative Cognitive Bias in Females with Eating Disorders

Victoria Burmester, Dasha Nicholls. Imperial College, London, United Kingdom

Further investigation of the BEDQ-A in a sample of female athletes

Tiffany Stewart¹, Vivienne M. Hazzard², Nicole Wesley¹, Miriam Rowan³, Kimberly O'Brien³, Carolyn B. Becker⁴. ¹Pennington Biomedical Research Center/Louisiana State University, Baton Rouge, LA, USA.²University of Minnesota, Minnesota, MN, USA.³Harvard Medical School/Boston Children, Boston, MA, USA.⁴Trinity University, San Antonio, TX, USA

Relations Between Subtypes of Dietary Restraint, Restriction, and Loss-of-Control Eating among Adolescents Seeking Weight Control: An Ecological Momentary Assessment Study

Laura D'Adamo^{1, 2}, Ross M. Sonnenblick¹, Adrienne S. Juarascio¹, Stephanie M. Manasse¹. ¹Department of Psychological and Brain Sciences and Center for Weight, Eating, and Lifestyle Science, Drexel University, Philadelphia, PA, USA.²Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA

Assessment of body composition and detection of malnutrition risk in low weight and eating disorder populations using 3D optical surface scans

Andrea K Garber¹, Jonathan P Bennett², Michael C Wong³, Isaac Y Tian⁴, Gertraud Maskarinec³, Samantha F Kennedy⁵, Cassidy McCarthy⁵, Nisa N Kelly³, Yong E Liu³, Vanessa I Machen¹, Steven B Heymsfield⁵, John A Shepherd³. ¹Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA.²Graduate Program in Human Nutrition, University of Hawai, Honolulu, HI, USA.³University of Hawai, Honolulu, HI, USA.⁴Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, WA, USA.⁵Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA

DEVELOPMENT AND VALIDATION OF THE BODY TRUST SCALE

William Grunewald¹, Sydney Waitz-Kudla¹, Tiffany A. Brown¹, Cheri A. Levinson², April R. Smith¹. ¹Auburn University Department of Psychological Sciences, Auburn, AL, USA.²University of Louisville Department of Psychological and Brain Sciences, Louisville, KY, USA

EMERGENCE OF OVERVALUATION OF SHAPE/WEIGHT AND OTHER EATING DISORDER SYMPTOMS AMONG INDIVIDUALS WITH AVOIDANT/RESTRICTIVE FOOD INTAKE DISORDER

P. Evelyna Kambanis^{1, 2, 3}, Christopher J. Mancuso¹, Kendra R. Becker^{2, 3}, Jennifer J. Thomas^{2, 3}, Kyle P. De Young¹. ¹Department of Psychology, University of Wyoming, Laramie, WY, USA.²Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.³Department of Psychiatry, Harvard Medical School, Boston, MA, USA

HOW WE MEASURE EXERCISE IN EATING DISORDERS:LACK OF CONTENT OVERLAP IN COMMON EXERCISE SCALES

Elizabeth W. Lampe¹, Katherine Schaumberg², David Kolar³, Kathryn Coniglio⁴, Marita Cooper⁵, Danielle Chapa⁶, Sasha Gorrell⁷. ¹Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, USA.²Wisconsin Psychiatric Institute and Clinics, Madison, WI, USA.³Institute of Psychology, University of Regensburg, Regensburg, Germany.⁴Department of Psychology, Rutgers University, Rutgers, NJ, USA.⁵Children's Hospital of Pennsylvania, Philadelphia, PA, USA.⁶Department of Psychology, University of Kansas, Lawrence, KS, USA.⁷Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA

EVALUATING MEASUREMENT INVARIANCE OF THE MULTIDIMENSIONAL ASSESSMENT OF INTEROCEPTIVE AWARENESS (MAIA-V2) IN EATING DISORDER RISK, SEX, AND AGE GROUPS

Katerina S. Rinaldi, Janell L. Mensinger. Nova Southeastern University, Fort Lauderdale, FL, USA

FAT PREFERENCE AND FAT INTAKE IN INDIVIDUALS WITH AND WITHOUT ANOREXIA NERVOSA

Janet E. Schebendach, Caitlin Lloyd, Michael J. Devlin, Monica Jablonski, Joanna Steinglass. Columbia University Medical Center, NY, NY, USA

Examining the prevalence and correlates of ARFID presentations in military veteran women and men

Kelsey N. Serier^{1, 2}, Dawne Vogt^{1, 2}, Shannon Kehle-Forbes^{3, 4}, Brian N. Smith^{1, 2}, Karen S. Mitchell^{1, 2}. ¹National Center for PTSD, Boston, MA, USA.²Department of Psychiatry, Boston University Chobanian a Avedisian School of Medicine, Boston, MA, USA.³Minneapolis VA Healthcare System, Minneapolis, MN, USA.⁴Department of Medicine, University of Minnesota, Minneapolis, MN, USA

SELF-REPORTED PHYSICAL ACTIVITY IN INPATIENTS WITH ANOREXIA NERVOSA: A CROSS-SECTIONAL ANALYSIS AT HOSPITAL ADMISSION FROM THE STUDY OF REFEEDING TO OPTIMIZE INPATIENT GAINS (STRONG)

Siena S. Vendlinski¹, Sasha Gorrell¹, Amanda E. Downey¹, Daniel Le Grange¹, Vanessa I. Machen¹, Erin C. Accurso¹, Sara M. Buckelew¹, Sally H. Adams¹, Audrey L. Hernando¹, Elizabeth Saunders¹, Cynthia J. Kapphahn², Anna Kreiter², Brooke Marsal², Barbara A. Moscicki³, Neville H. Golden², Andrea K. Garber¹. ¹University of California, San Francisco, San Francisco, CA, USA.²Stanford University, Stanford, CA, USA.³University of California, Los Angeles, Los Angeles, CA, USA

Objective Measurement of Eating Behavior in Binge-Eating Disorder: A Feasibility Study

B Timothy Walsh^{1, 2}, Michael J Devlin^{1, 2}, Janet Schebendach^{1, 2}, Janine A Higgins³, Edward Sazonov⁴. ¹Columbia University, New York, NY, USA.²NYS Psychiatric Institute, New York, NY, USA.³University of Colorado, Denver, CO, USA.⁴University of Alabama, Tuscaloosa, AL, USA

LEFT AMYGDALA SIZE MODERATES THE MEDIATING EFFECT OF ALEXITHYMIA ON EATING DISORDER AND AUTISM SYMPTOMS

Sean Arthur Cully, Malin Bjornsdotter. Sahlgrenska University Hospital, Gothenburg, Sweden

CHARACTERIZING NATURALISTIC MEAL TIMING, ENERGY INTAKE, AND MACRONUTRIENT INTAKE AMONG INDIVIDUALS WITH LOSS OF CONTROL EATING

Angeline R Bottera¹, Kyle P De Young². ¹The University of Chicago, Department of Psychiatry and Behavioral Neuroscience, Chicago, IL, USA.²University of Wyoming, Department of Psychology, Laramie, WY, USA

Weight variability and prefrontal activation in bulimia nervosa

Maia A. Chester¹, Laura A. Berner¹, Michael R. Lowe². ¹Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.²Department of Psychology, Drexel University, Philadelphia, PA, USA

SEX DIFFERENCES IN THE ASSOCIATION BETWEEN PUBERTAL STAGE AND ONSET OF ANOREXIA NERVOSA

Marita Cooper¹, Grace Haase¹, Moniher Deb¹, Rebecka Peebles^{1, 2}, Laurel Weaver^{1, 2}, C. Alix Timko^{1, 2}. ¹Children's Hospital of Philadelphia, Philadelphia, PA, USA.²University of Pennsylvania, Philadelphia, PA, USA

THE ROLE OF STRESS-INDUCED HABITUAL RESPONDING IN THE MAINTENANCE OF BINGE/PURGE SYMPTOMS: AN EXPLORATORY NATURALISTIC STUDY

Adaora Ekwonu¹, Elizabeth N. Dougherty², Angeline R. Bottera², Jennifer E. Wildes², Alissa Haedt-Matt³. ¹The Pritzker School of Medicine, University of Chicago, Chicago, IL, USA.²Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL, USA.³Department of Psychology, Illinois Institute of Technology, Chicago, IL, USA

NEUROCOGNITIVE REWARD PROCESSES ASSOCIATED WITH ECOLOGICALLY-ASSESSED BINGE EATING IN BINGE-EATING DISORDER

Glen Forester¹, Lauren M. Schaefer^{1, 2}, Jeffrey S. Johnson^{1, 3}, Robert D. Dvorak^{1, 4}, Stephen A. Wonderlich^{1, 2}. ¹Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.²University of North Dakota School of Medicine and Health Sciences, Grant Forks, ND, USA.³North Dakota State University, Fargo, ND, USA.⁴University of Central Florida, Orlando, ND, USA

DISCRIMINATION AND EATING DISORDER SYMPTOMS: ACCOUNTING FOR THE IMPACT OF NEGATIVE AFFECTIVITY

Lindsay Gillikin, Kyle De Young, Christopher Mancuso, Samantha Spoor, Kasey Stanton. Department of Psychology, University of Wyoming, Laramie, WY, USA

DIFFERENTIATION OF INDIVIDUALS WITH LOW-WEIGHT EATING DISORDERS AND HEALTHY CONTROLS BY HIGH RESOLUTION GASTRIC MAPPING

Tom Hildebrandt¹, Andy Taylor², Allison Boyar¹, Biebu Jess¹, Desiree Webb¹, Robyn Sysko¹. ¹Icahn School of Medicine at Mount Sinai, New York, NY, USA.²Harvard Medical School, Boston, MA, USA

CEREBROSPINAL FLUID BIOMARKERS AMONG INDIVIDUALS WITH ANOREXIA NERVOSA: A SYSTEMATIC REVIEW

Esha Karia^{1, 2}, Tara Kyaw^{2, 3}, Suhani Dheer², Lauren B. Lindman², Jennifer J. Thomas Ph.D.^{2, 4}, Kendra R. Becker Ph.D.^{2, 4}, Madhusmita Misra M.D.^{4, 5, 6}, Steven Arnold M.D.^{4, 7}, Marek Kubicki M.D., Ph.D.^{4, 8}, Kamryn T. Eddy Ph.D.^{2, 4}, Lauren Breithaupt Ph.D.^{2, 4}. ¹Boston College, Chestnut Hill, MA, USA.²Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.³Boston University, Boston, MA, USA.⁴Harvard Medical School, Boston, MA, USA.⁵Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, USA.⁶Division of Pediatric Endocrinology, Mass General Hospital for Children, Boston, MA, USA.⁷Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.⁸Department of Psychiatry, Brigham and Women, Boston, MA, USA

Timing of Weight-motivated Dietary Restriction in Relation to Receipt of Earnings/Benefits Among Young Adults Experiencing Food Insecurity

Meredith R Kells¹, Vivienne M Hazzard^{2, 3}, Ross D Crosby², Dianne Neumark-Sztainer³. ¹University of Rochester School of Nursing, Rochester, NY, USA.²Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.³University of Minnesota, Department of Psychiatry and Behavioral Sciences, Minneapolis, MN, USA

CIRCADIAN DISRUPTIONS ALTER OVERALL CONSUMPTION PATTERNS AND EXACERBATE BINGE-LIKE EATING IN MICE

Christopher J. Mancuso¹, Samantha P. Spoor¹, Lindsay Gillikin¹, P. Evelyna Kambanis^{1, 2, 3}, Emily Schmitt^{4, 5}, Kyle P. De Young¹. ¹Department of Psychology, University of Wyoming, Laramie, WY, USA.²Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.³Department of Psychiatry, Harvard Medical School, Boston, MA, USA.⁴Division of Kinesiology a Health, University of Wyoming, Laramie, WY, USA.⁵Wyoming WWAMI Medical Education, Laramie, WY, USA

THE RELATIONSHIP AMONG DISORDERED EATING BEHAVIOR, POWER OF FOOD SCALE SCORES, AND SENSITIZATION OF THE REINFORCING VALUE OF FOOD

Ana Leticia Pereira Andrade^{1, 3}, Jennifer L Temple^{1, 2, 3}, Katherine N Balantekin^{2, 3}. ¹Department of Community Health and Health Behavior, University at Buffalo, Buffalo, NY, USA.²Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, USA.³Center for Ingestive Behavior Research, University at Buffalo, Buffalo, NY, USA

SHORT CHAIN FATTY ACIDS AS POTENTIAL MEDIATORS OF MICROBIOTA-GUT-BRAIN INTERACTIONS IN ANOREXIA NERVOSA: A RESEARCH PROPOSAL

Robin Quagebeur¹, Boushra Dalile², Kristin Verbeke², Lukas Van Oudenhove², Elske Vrieze¹. ¹KU Leuven, Mind-body Research group, Department of Neurosciences, Leuven, Belgium.²KU Leuven, Translational Research in GastroIntestinal Disorders (TARGID), Leuven, Belgium

Glycemic variability predicts disordered eating behaviors in adolescents and young adults with type 1 diabetes

Diana Rancourt¹, Laura B. Smith². ¹University of South Florida, Tampa, FL, USA.²Cincinnati Children's Hospital, Cincinnati, OH, USA

EVALUATING THE DIETARY RESTRAINT MODEL OF BINGE EATING IN BINGE-EATING DISORDER: AN ECOLOGICAL MOMENTARY ASSESSMENT STUDY

Julia Bartholomay^{1, 2}, Lauren M. Schaefer^{1, 3}, Glen Forester¹, Ross D. Crosby^{1, 3}, Carol B. Peterson⁴, Scott J. Crow⁴, Scott G. Engel^{1, 3}, Stephen A. Wonderlich^{1, 3}. ¹Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.²Department of Psychology, North Dakota State University, Fargo, ND, USA.³Department of Psychiatry and Behavioral Science, University of North Dakota, Fargo, ND, USA.⁴Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, USA

WEIGHT HISTORY CORRELATES OF RESTING ENERGY EXPENDITURE IN WOMEN WITH BULIMIA NERVOSA

Simar Singh^{1, 2}, Laurel Mayer³, Michael Rosenbaum^{4, 5}, Michael R. Lowe². ¹Department of Psychiatry, University of California, San Francisco, San Francisco, CA, USA.²Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, USA.³Department of Psychiatry, Columbia University Irving Medical Center, New York City, NY, USA.⁴Department of Pediatrics, Columbia University Irving Medical Center, New York City, NY, USA.⁵Columbia University Clinical and Translational Science Award Program, New York City, NY, USA

EVALUATING PREDICTIVE FACTORS FOR FUTURE SUICIDAL ATTEMPTS IN A BROAD POPULATION OF EATING DISORDER PATIENTS

Robertas Strumila^{1, 2, 3}, Aiste Lengvenyte^{1, 2, 3}, Jonathan Dubois^{1, 2}, Maude Seneque^{1, 2}, Emilie Olie^{1, 2}, Philippe Courtet^{1, 2}, Sebastien Guillaume^{1, 2}. ¹Department of Urgent and Post Urgent Psychiatry, CHU Montpellier, Montpellier, France, Montpellier, France.²Institute of Functional Genomics, University of Montpellier, CNRS, INSERM, Montpellier, France, Montpellier, France.³Clinic of Psychiatry, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania, Vilnius, Lithuania

DEFICITS IN SOCIAL COGNITION ARE ASSOCIATED WITH SUICIDALITY AMONG INDIVIDUALS WITH EATING DISORDERS

Glen Forester¹, Dorian R. Dodd¹, Autumn J. Askew², Sasha Mochida³, Megan Jasicki³, Scott J. Crow³, Carol B. Peterson³, Emily M. Pisetsky⁴. ¹Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.²San Diego State University/UC San Diego, San Diego, CA, USA.³University of Minnesota, Minneapolis, MN, USA.⁴University of North Carolina, Chapel Hill, NC, USA

Dissociation and suicidality in eating disorders: mediating and moderating factors

Yael Doreen Lewis^{1, 2}, Shirley Kapon³, Adi Enoch-Levy⁴, Amit Yaroslvsky⁴, Eliezer Witztum⁵, Daniel Stein^{2, 4}. ¹Hadarim Eating Disorders Center, Shalvata Mental Health Center, Hod Hasharon, Israel.²Department of Psychiatry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.³Beer-Yaacov and Ness Ziona Mental health Center Ness Ziona, Israel.⁴Pediatric Psychosomatic Department, Safra Children, Tel Hashomer, Israel.⁵Faculty of Health Sciences, Division of Psychiatry, Ben Gurion University of the Negev, Bee Sheva, Israel

EXAMINING RELATIONSHIPS BETWEEN THE NINE SYMPTOMS OF BORDERLINE PERSONALITY DISORDER AND DISTINCT SYMPTOMS OF EATING DISORDERS

Alexia E Miller¹, Tayla Bain¹, Ege Bicaker¹, Vittoria Trolio¹, Lisa Zhu¹, Chloe White², Sarah E Racine¹. ¹McGill University, Montreal, Canada.²Simon Fraser University, Vancounver, Canada

THE RELATIONSHIP BETWEEN EATING DISORDER PSYCHOPATHOLOGY, ANXIETY, WEEKS IN TREATMENT, AND EARLY WEIGHT GAIN.

Taylor R. Perry^{1, 2}, Nickolas Jones², Dave Freestone², Dori M. Steinberg^{2, 3}, Cara Bohon^{2, 4}, Jessica H. Baker². ¹University at Albany, State University of New York, Albany, NY, USA.²Equip Health, Carlsbad, CA, USA.³Duke University, Durham, NC, USA.⁴Stanford University Dept of Psychiatry and Behavioral Sciences, Stanford, CA, USA

Presence of Pediatric Acute-Onset Neuropsychiatric Syndrome and Related Obsessive-Compulsive Symptoms Among Individuals with Avoidant/Restrictive Food Intake Disorder

Chunni Ji^{1, 2}, Ziyu Zhao¹, Felicia Petterway^{1, 3}, Casey M. Stern¹, Julia Gydus^{1, 3}, Nadia Micali⁴, Kamryn T. Eddy^{1, 5}, Madhusmita Misra^{3, 5, 6}, Kyle Williams^{5, 7}, Kendra R. Becker^{1, 5}, Jennifer J. Thomas^{1, 5}, Elizabeth A. Lawson^{3, 5}, Lauren Breithaupt^{1, 5, 8}. ¹Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.²Division of Women, Boston, MA, USA.³Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, USA.⁴Eating Disorders Research Unit, Mental Health Center Ballerup, Mental Health Services of the Capital Region of Denmark, Ballerup, Denmark.⁵Harvard Medical School, Boston, MA, USA.⁶Division of Pediatric Endocrinology, Mass General Hospital for Children, Boston, MA, USA.⁷Pediatric Neuropsychiatry and Immunology Clinic, Massachusetts General Hospital, Boston, MA, USA.⁸Psychiatry Neuroimaging Laboratory, Brigham and Women, Boston, MA, USA

SLEEP CHARACTERISTICS AND NEXT-DAY DISORDERED EATING AND DIETARY INTAKE IN ADOLESCENTS: AN ECOLOGICAL MOMENTARY ASSESSMENT STUDY

Stephanie M Manasse¹, Laura D'Adamo¹, Evan M Forman¹, Gina Tripicchio². ¹Drexel University, Philadelphia, PA, USA.²Temple University, Philadelphia, PA, USA

Screening foravoidant restrictive food intake disorder(ARFID) inSwedish preschoolers: presentation, co-occurring conditions, and validation of the ARFID-Brief Screener (ARFID-BS)

Lisa Dinkler^{1, 2, 3}, Katarzyna Brimo², Helena Holmang², Kahoko Yasumitsu-Lovell^{2, 3}, Per Mollborg⁴, Elisabeth Fernell², Rachel Bryant-Waugh⁵, Christopher Gillberg², Maria Rastam^{2, 6}. ¹Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.²Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden.³Department of Environmental Medicine, Kochi Medical School, Kochi University, Kochi, Japan.⁴University of Gothenburg, Gothenburg, Sweden.⁵Maudsley Centre for Child and Adolescent Eating Disorders, South London and Maudsley NHS Foundation Trust, London, United Kingdom.⁶Department of Clinical Sciences Lund, Lund University, Lund, Sweden

DISPARITIES IN GEOGRAPHIC ACCESSIBILITY OF EATING DISORDER TREATMENT CENTERS IN MASSACHUSETTS

Chuying Huo¹, Lingbo Liu², S.Bryn Austin^{1, 3, 4}. ¹Strategic Training Initiative for the Prevention of Eating Disorders, Boston, MA, USA.²Center for Geographic Analysis Center for Geographic Analysis at Harvard University, Cambridge, MA, USA.³Boston Children's Hospital, Boston, MA, USA.⁴Harvard T.H. Chan School of Public Health, Boston, MA, USA

SERVICE USE AMONG INDIVIDUALS WITH EATING DISORDERS IN NEW BRUNSWICK, CANADA

Ince A. Husain, Molly L. Miller, Julia Besner, Emilie Lacroix. University of New Brunswick, Fredericton, NB, Canada

The Bare Necessities: Adolescent Food Insecurity and Disordered Eating

Lucy Serpell^{1, 2}, Katherine Smith¹. ¹University College London, London, United Kingdom.²North East London NHS Foundation Trust, Essex, United Kingdom

UNCOVERING GENETICS OF ANOREXIA AND BULIMIA NERVOSA THROUGH LARGE SCALE SEQUENCING

Franjo Ivankovic^{1, 2}, Kristin N Javaras^{3, 4}, Rocky E Stroud^{1, 5}, Christine Stevens^{1, 2}, Mark Daly^{1, 2}, Benjamin Neale^{1, 2}. ¹Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA.²Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA.³McLean Hospital, Belmont, MA, USA.⁴Department of Psychiatry, Harvard Medical School, Boston, MA, USA.⁵Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA

A SYSTEMATIC REVIEW AND META-ANALYSIS OF LOSS-OF-CONTROL EATING, METABOLIC SYNDROME COMPONENTS, AND INFLAMMATORY MARKERS IN YOUTH AND ADULTS

Meghan E Byrne¹, Lisa M Shank^{2, 3}, Jason M Lavender^{2, 3}, M K Higgins Neyland^{2, 3}, Alexander Rice^{2, 4}, Regan Sweeney⁴, Candace Norton⁵, Mark Haigney², Jack A Yanovski⁶, Marian Tanofsky-Kraff^{2, 3, 4, 5}. ¹Section on Development and Affective Neuroscience, Emotion and Development Branch, National Institute of Mental Health (NIMH), Bethesda, MD, USA.²Department of Medicine, Military Cardiovascular Outcomes Research (MiCOR) Program, Uniformed Services University of the Health Sciences (USUHS), Bethesda, MD, USA.³Department of Medical and Clinical Psychology, USUHS, Bethesda, MD, USA.⁴Metis Foundation, San Antonio, TX, USA.⁵Learning Resource Center, USUHS, Bethesda, MD, USA.⁶Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Bethesda, MD, USA

Duration of Moderate to Vigorous Physical Activity on Exercise and Non-Exercise Days in a Sample of Women with Eating Disorders

Danielle A. N. Chapa¹, Kelsie T. Forbush². ¹Western Psychiatric Hospital/University of Pittsburgh, Pittsburgh, PA, USA.²University of Kansas, Lawrence, KS, USA

HEALTH CARE UTILIZATION PATTERNS IN INDIVIDUALS WITH ARFID COMPARED TO OTHER EATING DISORDERS DIAGNOSED IN CHILDHOOD AND/OR ADOLESCENCE

Jennifer L Couturier¹, Anastasia Gayowsky², Sheri Findlay¹, Cheryl Webb¹, Sadaf Sami¹, Anthony Chan¹, Rahul Chanchlani¹, Paul Kurdyak³. ¹McMaster University, Hamilton, ON, Canada.²ICES, Hamilton, ON, Canada.³University of Toronto, Toronto, ON, Canada

DOES ACCESS TO DATA FROM FITNESS TRACKERS IMPACT EATING PATHOLOGY IN INDIVIDUALS WITH EATING DISORDERS?

Elizabeth W. Lampe^{1, 2}, Emily K. Presseller^{1, 2}, Stephanie M. Manasse^{1, 2}. ¹WELL Center, Philadelphia, PA, USA.²Department of Psychological and Brian Sciences, Philadelphia, PA, USA

"Shedding for the Wedding" for Whom? An Evaluation of the Tripartite Influence Model of Disordered Eating Among Women Planning a Wedding

Genevieve P. Nowicki, Catherine Navarrete, Rachel F. Rodgers. APPEAR, Northeastern University, Boston, MA, USA

TRAJECTORIES OF NEGATIVE AFFECT BEFORE AND AFTER EPISODES OF RESTRAINED EATING IN INDIVIDUALS WITH BINGE-SPECTRUM EATING DISORDERS

Devyn R Riddle², Elizabeth W Lampe^{1, 2}, Stephanie M Manasse^{1, 2}, Adrienne S Juarascio^{1, 2}. ¹Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, USA.²Center for Weight, Eating, and Lifestyle Sciences, Drexel University, Philadelphia, PA, USA

"OH, YUCK!" EXAMINING ASSOCIATIONS BETWEEN DISGUST RESPONSES TO BODY IMAGS AND RESTRICTIVE EATING PATHOLOGY IN ANOREXIA NERVOSA AND ATYPICAL ANOREXIA NERVOSA

Lisa M. Anderson, Maya Day, Sadie Michel, Emma Rasmussen. University of Minnesota Medical School, Minneapolis, MN, USA

Emotion prediction errors influence urges and behavior among binge eaters

Laura A. Berner¹, Joseph Heffner², Glen Forester³, Lauren Schaefer^{3, 4}, Jeffrey S. Johnson^{3, 5}, Thalia Viranda¹. ¹Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.²Department of Psychology, Yale University, New Haven, CT, USA.³Sanford Center for Biobehavioral Research, Sanford Research, Fargo, ND, USA.⁴Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND, USA.⁵Department of Psychology, North Dakota State University, Fargo, ND, USA

Oxytocin Increases Negative Cognitive Bias in Females with Eating Disorders Eating disorders typically emerge in adolescence, a critical period for brain development and social change, meaning interpersonal difficultiesincluding interpretation biasesfrequently co-occur. Oxytocin is a neuropeptide that modulates social cognition and has been particularly linked to prosocial effects. However, to date, no study has investigated oxytocins effects on negative interpretation bias in adolescents with eating disorders. Here we show that adolescent females with anorexia or bulimia nervosa made more negative interpretations than controls when presented with ambiguous social scenarios. As predicted, intranasal oxytocin reduced negative interpretations, but only in participants without an eating disorder. Unexpectedly, oxytocin increased negative interpretations with a large effect in participants with an eating disorder or reaching threshold on an autism screen. Oxytocin also reduced neutral interpretations overall with a large effect. The results of this study suggest that oxytocin administration may not benefit adolescent girls with an eating disorder or autism because it increased the degree of negative interpretation of social situations in these groups compared to controls. Oxytocin may increase a negative social signal in populations with extant negative social biases, which clinical practice might benefit from addressing.

Victoria Burmester¹, Emerie Sheridan¹, Nikita Julius¹, Jordan Elliott¹, Olivia Thackeray¹. ¹Imperial College London, London, United Kingdom.²Imperial College London, London, United Kingdom.³Imperial College London, London, United Kingdom.⁴Imperial College London, London, United Kingdom.⁵Imperial College London, London, United Kingdom.⁶Imperial College London, London, United Kingdom

ROC ANALYSIS MAY MISCLASSIFY SUCCESS IN FBT TREATMENT

Kelly Cai¹, Taylor R. Perry^{1, 2}, Dave Freestone¹, Dori M. Steinberg^{1, 3}, Cara Bohon^{1, 4}, Jessica H. Baker¹, Jessie E. Menzel¹. ¹Equip Health, Inc., Carlsbad, CA, USA.²State University of New York at Albany, Albany, NY, USA.³Duke University, Durham, NC, USA.⁴Stanford University, Standford, CA, USA

GENDER DIFFERENCES IN ASSOCIATIONS BETWEEN NEGATIVE ATTITUDES TOWARDS OBESITY AND PATHOLOGICAL EATING/EXERCISE

Kristin Denmark, Marley Billman Miller, Tiffany A Brown. Auburn University, Auburn, AL, USA

BODY DISSATISFACTION, DRIVE FOR THINNESS, COMPULSIVE EXERCISE AND MENTAL HEALTH AMONG SWEDISH MALE ELITE GYMNASTS. A TWO-YEAR LONGITUDINAL ASSESSMENT.

Klara Edlund^{1, 2}, Niklas Forsberg⁰, Anna Melin³. ¹Karolinska Institutet, Solna, Sweden.²Sophiahemmet University, Stockholm, Sweden.³Linnaeus University, Kalmar/Vaxjo, Sweden

BODY PERCEPTION AND DISSATISFACTION IN MONOZYGOTIC TWINS: A COMPHREHENSIVE RISK EVALUATION FOR ANOREXIA NERVOSA IN TWINS (CREAT) STUDY

Jamie Feusner^1-4, Elin Hedlund³, Sameena Karsan², Ralf Kuja-Halkola³, Christina Ralph-Nearman⁵, Ata Ghaderi³, Cynthia Bulik^{3, 6}. ¹Department of Psychiatry, University of Toronto, Toronto, ON, Canada.²Centre for Addiction and Mental Health, Toronto, ON, Canada.³Department of Women, Stockholm, Sweden.⁴Department of Psychiatry and Biobehavioral Sciences, UCLA, Los Angeles, CA, USA.⁵Department of Psychological a Brain Sciences, University of Louisville, Louisville, KY, USA.⁶Department of Psychiatry, University of North Carolina, Chapel Hill, NC, USA

SELF-REPORTED AND TASK-BASED FACETS OF IMPULSIVITY AND THEIR RELATIONSHIP TO EATING DISORDER SYMPTOMS

Victoria F. Franco¹, Emily R. Linn², Noa A. Bregman¹, Stacey M. Schaefer³, James I. Hudson^{1, 4}, Richard J. Davidson^{2, 5, 6}, Kristin N. Javaras^{1, 4}. ¹McLean Hospital, Belmont, MA, USA.²Department of Psychology, University of Wisconsin-Madison, Madison, WI, USA.³Institute on Aging, University of Wisconsin-Madison, Madison, WI, USA.⁴Department of Psychiatry, Harvard Medical School, Boston, MA, USA.⁵Center for Healthy Minds, University of Wisconsin-Madison, Madison, WI, USA.⁶Healthy Minds Innovations, Madison, WI, USA

A PILOT INVESTIGATION OF THE EXPLORE/EXPLOIT TRADE-OFF IN ADULTS WITH BULIMIA NERVOSA

Kelsey E. Hagan^{1, 2}, Ivieosa Aimfua², Anna Konova³, B. Timothy Walsh². ¹Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA.²Department of Psychiatry, New York State Psychiatric Institute, Columbia University Irving Medical Center, New York, NY, USA.³Department of Psychiatry, University Behavioral Health Care, and the Brain Health Institute, Rutgers University, Piscataway, NJ, USA

EXAMINING THE EFFECT OF PERCEIVED DISCRIMINATION AND SOCIAL SUPPORT ON EATING DISORDER PATHOLOGY AMONG COLLEGE STUDENTS BEFORE AND DURING THE COVID-19 PANDEMIC

Alyssa M. Izquierdo, Jillian D. Nelson, Olga Kornienko, Alison E. Cuellar, Lawrence Cheskin, Sarah Fischer. George Mason University, Fairfax, VA, USA

PRENATAL LOSS OF CONTROL EATING IS ASSOCIATED WITH POORER CARDIOVASCULAR HEALTH DURING PREGNANCY AMONG INDIVIDUALS WITH PRE-PREGNANCY BMI ≥ 25

Riley J. Jouppi¹, Michele D. Levine^{1, 2}, Yu Cheng³, Shannon D. Donofry^{1, 4}, Christine C. Call², Sarah Niemi². ¹Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA.²Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.³Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA.⁴Ascension Digital Studio, Ascension Health, St. Louis, MO, USA

PROBABILISTIC REVERSAL LEARNING IN ADOLESCENT PATIENTS WITH ANOREXIA NERVOSA: A COMPUTATIONAL MODELING APPROACH

Lara Keller¹, Martin Schulte-Ruther^{2, 3, 4}, Florian Ph.S Fischmeister⁵, Beate Herpertz-Dahlmann¹, Jochen Seitz¹, Eileen Weis². ¹Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital RWTH Aachen, Aachen, Germany.²Child Neuropsychology Section, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital RWTH Aachen, Aachen, Germany.³Institute of Neuroscience and Medicine (INM-11), Julich Research Center, Julich, Germany.⁴Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Center Gottingen, Gottingen, Germany.⁵Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria

EXAMINING THE ROLE OF REWARD SENSITIVITY AND DIFFICULTIES IN EMOTION REGULATION IN LOW-RESTRAINT BINGE EATING

Laura Lapadat, Angela Gao, Ege Bicaker, Sarah E Racine. McGill University, Montreal, QC, Canada

EXAMINING ASPECTS OF INTEROCEPTIVE SENSIBILITY, BODY SHAME AND BODY SURVEILLANCE IN WOMEN WITH HIGH AND LOW BODY DISSATISFACTION: A NETWORK COMPARISON STUDY

Akansha Mahesh Naraindas, Amy McInerney, Sonya Deschenes, Sarah Cooney. University College Dublin, Dublin, Ireland

EXAMINATION OF SELF-REPORTED IMPULSIVITY AMONG PATIENTS IN A SPECIALIZED INPATIENT EATING DISORDER TREATMENT PROGRAM

Mary K. Martinelli, Colleen C. Schreyer, Irina A. Vanzhula, Angela S. Guarda. Johns Hopkins School of Medicine, Baltimore, MD, USA

EXAMINING RISKY DECISION MAKING IN ANOREXIA NERVOSA

Susan M Murray, Alan Simmons, Walter Kaye. University of California, San Diego, San Diego, CA, USA

ASSOCIATIONS BETWEEN PROSPECTIVE AND INHIBITORY ANXIETY AND EATING DISORDER FEARS

Danielle E. Peters, Taylor R. Perry, Madelyn G. Johnson, Drew A. Anderson. University at Albany, State University of New York, Albany, NY, USA

PERCEIVED COACH AND TEAMMATE ATTITUDES AND COMMENTS ON WEIGHT AND SHAPE AND DISORDERED EATING IN NCAA SWIMMERS

Claire K Pinson^{1, 2}, Kathryn R Fox³, Guido K Frank⁴, Jill M Hooley*⁵, Kristin N Javaras*^{1, 6}. ¹McLean Hospital, Belmont, MA, USA.²UC San Diego School of Medicine, San Diego, CA, USA.³Department of Psychology, University of Denver, Denver, CO, USA.⁴Department of Psychiatry, UC San Diego School of Medicine, San Diego, CA, USA.⁵Department of Psychology, Harvard University, Cambridge, MA, USA.⁶Department of Psychiatry, Harvard Medical School, Boston, MA, USA

Change in Eating-Disorder Pathology and Suicidality in a Nationally Representative Sample of Veterans Recently Separated from Service

Brianne N. Richson, Kelsie T. Forbush, Yiyang Chen. University of Kansas Department of Psychology, Lawrence, KS, USA

THE COGNITIVE PROFILE IN ADOLESCENTS WITH ANOREXIA NERVOSA AND THE RELATIONSHIP WITH AUTISM AND ADHD

Sandra Rydberg Dobrescu¹, Karin Dahlin², Louise Karjalainen², Ingrid Stenberg³, Gunilla Paulsson Karlsson³, Elisabet Wentz². ¹Gillberg Neuropsychiatry Centre, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden.²Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden.³The Eating Disorder Center children and young adults, Sahlgrenska University Hospital, Gothenburg, Sweden

EXPLORING THE IMPACT OF MOOD STATES ON MOTIVATION TO CONSUME FOOD AND NON-FOOD REWARDS IN INDIVIDUALS WITH LOSS OF CONTROL EATING

Kendall M Schmidt, Lindsay P Bodell. University of Western Ontario, London, ON, Canada

DISTINGUISHING REWARD SEEKING FROM HARM AVOIDANCE IN ANOREXIA NERVOSA BY QUANTIFYING THE REFRAMING OF SUBJECTIVE VALUE

Jenifer Z Siegel¹, Neil Garret^{2, 3}, Caroline Touzeau¹, Alexandra Muratore¹, Blair Uniacke¹, Justine Nicholson¹, Karin E Foerde¹, Nathaniel Daw², Daphna Shohamy¹, Joanna Steinglass¹. ¹Columbia University, New York City, NY, USA.²Princeton University, Princeton, NJ, USA.³University of East Anglia, Norwich, United Kingdom

THE ROLE OF HABIT IN BINGE EATING: EFFECTS ON EATING INTENTIONS AND CUES IN DAILY LIFE

Kathryn E. Smith¹, Alex Smith¹, Tyler B. Mason². ¹Department of Psychiatry and Behavioral Sciences, University of Southern California, Los Angeles, CA, USA.²Department of Population and Public Health Sciences, University of Southern Califronia, Los Angeles, CA, USA

ASSOCIATIONS BETWEEN WEIGHT DISCRIMINATION, EATING-DISORDER-RELATED IMPAIRMENT, AND EATING DISORDER TREATMENT INTEREST

Marianna L Thomeczek, Yiyang Chen, Sonakshi Negi, Alexa L'Insalata, Sarah Johnson Munguia, Kelsie T Forbush. University of Kansas, Lawrence, KS, USA

DIFFERENCES IN PARENTAL CRTICISM IN ADOLESCENTS WITH OVERWEIGHT AND OBESITY WITH OR WITHOUT LOSS OF CONTROL: AN ECOLOGICAL MOMENTARY ASSESSMENT STUDY

Claire Trainor^{1, 2}, Tyler Mason³, Adrienne S Juarascio^{1, 2}, Stephanie M Manasse^{1, 2}. ¹Center for Weight, Eating, and Lifestyle Sciences (WELL Center), Philadelphia, PA, USA.²Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, USA.³University of Southern California, Los Angeles, CA, USA

ENDORSEMENT OF AVOIDANT/RESTRICTIVE EATING MOTIVES ACROSS RESTRICTIVE EATING DISORDERS: A STATE- AND TRAIT-LEVEL EXAMINATION

Vittoria Trolio¹, Ege Bicaker¹, Alexia E. Miller¹, Lisa Y. Zhu², Chloe White³, Sarah E. Racine¹. ¹McGill University, Montreal, QC, Canada.²University of Western Ontario, London, ON, Canada.³Simon Fraser University, Burnaby, BC, Canada

General and Symptom-Specific Illness Duration and Course and Symptom Severity in Anorexia Nervosa

Kira G. Venables¹, Ariana R. Bazzi¹, Carol B. Peterson², Ann F. Haynos^{1, 2, 3}. ¹Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA.²Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA.³Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA

INITIAL EVIDENCE TO SUPPORT A BROAD ANXIETY MODEL FOR EATING DISORDERS

Desiree Webb, Jessica Bibeau, Deena Peyser, Malka Sears, Robyn Sysko, Tom Hildebrandt. Eating and Weight Disorders Program, Icahn School of Medicine at Mount Sinai, New York, NY, USA

SOCIAL MEDIA USE, EATING DISORDER PATHOLOGY AND APPEARANCE IDEALS AND PRESSURE: A CROSS-SECTIONAL STUDY IN ADOLESCENT BOYS AND GIRLS

Line Wisting¹, Christine Sundgot-Borgen¹, Ingela L Kvalem², Anne L Wennersberg¹, Camilla L Dahlgren^{1, 3}. ¹Oslo University Hospital, Division of Mental Health and Addiction, Regional department for Eating Disorders, Oslo, Norway.²University of Oslo, Department of Psychology, Oslo, Norway.³Oslo New University College, Department of Psychology, Oslo, Norway

GENDER SIMILARITIES AND DIFFERENCES IN ASSOCIATIONS BETWEEN WEIGHT DISCRIMINATION, SHAPE/WEIGHT CONCERNS, AND EATING DISORDER SYMPTOMS AMONG POST-9/11 VETERANS

Ziyu (Ivan) Zhao^{1, 2}, Kelsey N. Serier^{1, 3}, Brian N. Smith^{1, 3}, Dawne Vogt^{1, 3}, Shannon Kehle-Forbes^{1, 4, 5}, Karen S. Mitchell^{1, 3}. ¹National Center for PTSD at VA Boston Healthcare System, Boston, MA, USA.²Department of Psychological a Brain Science, Boston University, Boston, MA, USA.³Department of Psychiatry, Boston University Chobanian a Avedisian School of Medicine, Boston, MA, USA.⁴Minneapolis VA Healthcare System, Minneapolis, MN, USA.⁵Department of Medicine, University of Minnesota, Minneapolis, MN, USA

THE ORBITOFRONTAL CORTEX MEDIATES THE EFFECTS OF ADVERSE CHILDHOOD EXPERIENCES ON BODY MASS INDEX IN EATING DISORDERS

Sarah Lagan, Megan E. Shott, Guido K.W. Frank. University of California at San Diego, La Jolla, CA, USA

FACILITATORS TO BINGE EATING IN BLACK ADULTS WITH TYPE 2 DIABETES

Rachel W. Goode^{1, 2, 4}, Sarah M. Godoy¹, Hannah Wolfe¹, Katie Olson¹, Tyisha Harper⁴, Sophia Berg³, Jaspreet Bhutani¹, Ramine Alexander⁴. ¹School of Social Work, UNC-Chapel Hill, Chapel Hill, NC, USA.²Department of Psychiatry, UNC-Chapel Hill, Chapel Hill, NC, USA.³Department of Psychology and Neuroscience, UNC-Chapel Hill, Chapel Hill, NC, USA.⁴Nutrition Research Institute, UNC-Chapel Hill, Kannapolis, NC, USA

PATIENT PERCEPTIONS OF LISDEXAMFETAMINE (VYVANSE) AS A TREATMENT FOR BINGE EATING DISORDER: AN EXPLORATORY QUALITATIVE ANALYSIS

Abanoub J Armanious^{1, 2}, Audrey Asare^{1, 2}, Deborah Mitchison^{3, 4}, Morgan H James^{1, 2}. ¹Department of Psychiatry, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ, USA.²Brain Health Institute, Rutgers Biomedical Health Sciences, Rutgers University, Piscataway, NJ, USA.³Centre for Emotional Health, Department of Psychology, Macquarie University, Sydney, Australia.⁴Translational Health Research Institute, School of Medicine, Western Sydney University, Sydney, Australia

An RCT examining acceptability, feasibility, and preliminary efficacy of ARFID-PTP: A brief intervention for treating pediatric avoidant/restrictive food intake disorder

Courtney E Breiner^{1, 2, 3}, McKenzie L Miller¹, Hana F Zickgraf^{2, 3}, Julia M Hormes¹. ¹University at Albany, SUNY, Albany, NY, USA.²Children's Healthcare of Atlanta, Atlanta, GA, USA.³Emory University, Atlanta, GA, USA

THEWEIGHTOF PREJUDICE: AN EDUCATIONAL AND EXPERIENTIAL WEIGHT-RELATED TEASING PREVENTION PROGRAM IN HIGH SCHOOL STUDENTS

Silvia Cerolini, Mariacarolina Vacca, Anna Zegretti, Andrea Zagaria, Caterina Lombardo. Department of Psychology, Sapienza University of Rome, Rome, Italy

CHANGE IN CRAVING AND DISORDERED EATING ACROSS TREATMENT AMONG INDIVIDUALS WITH EATING DISORDERS

Allison Cunning, Cody Staples, Rob Schlauch, Diana Rancourt. University of South Florida, Tampa, FL, USA

IMPLEMENTING A WEIGHT NEUTRAL TREATMENT PROGRAM FOR PATIENTS WITH BINGE EATING DISORDER AND HIGHER WEIGH

Trine Tetlie Eik-Nes^{1, 2}, Kjersti Hognes Berg^{1, 2}. ¹Norwegian University of Science and Technology, Trondheim, Norway.²Stjordal Community Mental Health Centre, Levanger Hospital, Levanger, Norway

THE EXPERIENCE OF SIBLINGS ATTENDING MULTIFAMILY THERAPY FOR ADOLESCENT EATING DISORDER

Ingrid Funderud¹, Inger Halvorsen¹, Anne-Lise Kvakland¹, Jeanette Skjonhaug¹, Kristin Stedal¹, Oyvind Ro^{1, 2}. ¹Regional Department for Eating Disorders, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.²Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Oslo, Norway

Examining the role of treatment engagement in mediating the association between SES and treatment outcomes for binge eating

Alyssa R Giannone¹, Adrienne S Juarascio^{1, 2}, Paakhi Srivastava². ¹Department of Psychology, Drexel University, Philadelphia, PA, USA.²Center for Weight, Eating, and Lifestyle Science, Drexel University, Philadelphia, PA, USA

TRANSDIAGNOSTIC USEFULNESS? EFFECTS OF AN ONLINE CBT-BASED THERAPIST-GUIDED INTERVENTION FOR BODY DYSMORPHIC DISORDER ON EATING DISORDER PATHOLOGY

ANDREA S HARTMANN¹, JULIA E ENGELKAMP¹, THOMAS STAUFENBIEL², DAVID D EBERT³, KATRIN SCHOENENBERG⁴, ALEXANDRA MARTIN⁴, MICHAELA SCHMIDT². ¹University of Konstanz, Konstanz, Germany.²University of Osnabrueck, Osnabrueck, Germany.³Technical University of Munich, Munich, Germany.⁴University of Wuppertal, Wuppertal, Germany

Predictors of treatment outcome in binge-eating disorder using a data-driven statistical machine learning approach

Anja Hilbert¹, Jan Speller², Stephan Herpertz³, Stephan Zipfel⁴, Hans-Christoph Friederich⁵, Brunna Tuschen-Caffier⁶, Andreas Mayr², Martina de Zwaan⁷. ¹University of Leipzig Medical Center, Leipzig, Germany.²University Hospital Bonn, Bonn, Germany.³LWL University, Bochum, Germany.⁴Medical University Hospital Tuebingen, Tuebingen, Germany.⁵Medical University Hospital Heidelberg, Heidelberg, Germany.⁶University of Freiburg, Freiburg, Germany.⁷Hannover Medical School, Hannover, Germany

EARLY WEIGHT GAIN AS A PREDICTOR OF OUTCOME IN A NATURALISTIC STUDY OF ADOLESCENTS WITH ANOREXIA NERVOSA RECEIVING FAMILY BASED TREATMENT

Sehar N Jessani¹, Marita Cooper¹, Grace Haase¹, Laurel Weaver^{1, 2}, Rebecka Peebles^{1, 2}, C. Alix Timko^{1, 2}. ¹Children's Hospital of Philadelphia, Philadelphia, PA, USA.²Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA

PSILOCYBIN THERAPY FOR FEMALES WITH ANOREXIA NERVOSA: AN OPEN LABEL FEASIBILITY STUDY

Stephanie Knatz, Samantha Shao, Julie Trim, Daphna Finn, Walter Kaye . UCSD, San Diego, CA, USA

EARLY AND CURRENT EXPERIENCES OF WEIGHT-BASED DISCRIMINATION ARE ASSOCIATED WITH EATING PSYCHOPATHOLOGY, DEPRESSION, AND POOR GENERAL HEALTH IN ADULTHOOD

Kellsey N Launius, Neha J Goel, Janet A Lydecker. Yale School Of Medicine, New Haven, CT, USA

Assessing the Cost-Effectiveness of InterventionsThat Simultaneously Prevent High Body MassIndex and Eating Disorders: an Australian case study

Long K-D Le¹, Eng J Tan¹, Phillipa Hay^{2, 3}, Jaithri Ananthapavan^{4, 5}, Yong Yi Lee^{1, 6, 7}, Cathrine Mihalopoulos¹. ¹Monash University Health Economics Group (MUHEG), School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, Australia, Melbourne, Australia.²Translational Health Research Institute (THRI), School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia, Penrith, Australia.³Camden and Campbelltown Hospital, SWSLHD, Campbelltown, NSW 2560, Australia, Campbelltown, Australia.⁴Deakin Health Economics, Institute for Health Transformation, School of Health and Social Development, Deakin University, Burwood, Victoria 3125, Australia, Burwood, Australia.⁵Global Centre for Preventive Health and Nutrition, Institute for Health Transformation, School of Health and Social Development, Deakin University, Burwood, Victoria 3125, Australia, Burwood, Australia.⁶School of Public Health, The University of Queensland, Herston, QLD 4006, Australia, Herston, Australia.⁷Queensland Centre for Mental Health Research, Wacol, QLD 4076, Australia, Wacol, Australia

BODY PROJECT: A PILOT TEST OF THE DISSONANCE-BASED EATING DISORDER PREVENTION PROGRAM WITH UNIVERSITY STUDENTS IN PORTUGAL

Paulo PP Machado¹, Carol R Coelho¹, Rita Ramos¹, Tania Rodrigues¹, Sonia Goncalves ¹, Eric Stice². ¹University of Minho, Braga, Portugal.²Stanford University, Stanford, CA, USA

GROUP SCHEMA THERAPY FOR CHRONIC EATING DISORDERS: EXPLORING THE MECHANISMS OF CHANGE

Suzanne H.W. Mares¹, Leonie Muller¹, Susan G. Simpson^{2, 3}, Maartje S. Vroling¹. ¹Department of Eating Disorders (Amarum), GGNet Mental Health, Warnsveld, Netherlands.²Regional Eating Disorders Unit, Edinburgh, United Kingdom.³Department of Justice and Society, University of South Australia, Adelaide, Australia

TRANSITION INTERVENTION FOR EATING DISORDERS (TIDE): A PROPOSED PROGRAM OF RESEARCH

Maria Nicula^{1, 2, 3}, Jennifer L Couturier^{2, 3, 4}. ¹PhD Student, McMaster University, Hamilton, ON, Canada.²Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.³Department of Psychiatry a Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada.⁴Pediatric Eating Disorders Program, McMaster Children, Hamilton, ON, Canada

FAMILY MEAL ENVIRONMENT ACROSS BEHAVIORAL WEIGHT LOSS TREATMENT FOR ADOLESCENTS WITH AND WITHOUT BINGE EATING

Emily K. Presseller^{1, 2}, Claire Trainor^{1, 2}, Adrienne S. Juarascio^{1, 2}, Stephanie M. Manasse^{1, 2}. ¹Drexel University, Department of Psychological and Brain Sciences, Philadelphia, PA, USA.²Drexel University, Center for Weight, Eating, and Lifestyle Sciences, Philadelphia, PA, USA

THE IMPACT OF ADDING A SINGLE SESSION OF IMAGERY RESCRIPTING TO COGNITIVE BEHAVIOURAL THERAPY FOR PATIENTS WITH ANOREXIA NERVOSA: A PILOT RANDOMISED CONTROLLED TRIAL

Bronwyn C Raykos¹, David M Erceg-Hurn¹, Peter M McEvoy^{1, 2}. ¹Centre for Clinical Interventions, Perth, Australia.²Curtin University, Perth, Australia

A protocol of real time intervention for clusters of suicide and non-suicide self-injurie behaviors in eating disorders adolescents attending an intensive outpatient program

Maritza Rodriguez^{1, 2}, Juanita Gempeler^{1, 2}, Sergio Castro^{1, 2}, Angelica Rubio¹, Melissa Medina¹, Maria M Ospina¹. ¹Equilibrio Outpatient Program, Bogota.²Javeriana University, Bogota

CHANGES IN ANXIETY TO EAT BY PORTION SIZE AND CALORIE DENSITY WITH MEAL-BASED BEHAVIORAL TREATMENT FOR ANOREXIA NERVOSA.

Kimberly R. Smith¹, Sarah Guo¹, Allisyn Pletch¹, Joseph McGuire¹, Jeffrey Brunstrom², Timothy H. Moran¹, Angela Guarda¹. ¹Department of Psychiatry a Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.²School of Psychological Science, University of Bristol, Bristol, United Kingdom

Development and Preliminary Validation of a Pediatric Screener for Eating Disorders in Primary Care

Dori M. Steinberg^{1, 2}, Nickolas M. Jones¹, Jessica H. Baker¹, David M. Freestone¹. ¹Equip Health, Carlsbad, CA, USA.²Duke University, Durham, NC, USA

INTERPERSONAL PSYCHOTHERAPY FOR THE PREVENTION OF BINGE EATING AND PSYCHOSOCIAL PROBLEMS AMONG AT-RISK ADOLESCENT MILITARY DEPENDENTS

Katherine A. Thompson^{1, 2}, Natasha L. Burke³, Cara Olsen⁴, Jason M. Lavender^{1, 2, 5}, Viviana Bauman^{1, 2}, Natasha Schvey⁶, Lisa Shank⁶, Jami F. Young^{7, 8}, Hannah Haynes^{1, 2}, Brian Ford⁹, Caitlin Ford⁹, David Klein^{9, 10, 11}, Tracy Sbrocco⁶, Mark Haigney^{1, 5}, Denise Wilfley¹², Marian Tanofsky-Kraff^{1, 6}. ¹Military Cardiovascular Outcomes Research (MiCOR) Program, Department of Medicine, Uniformed Services University, Bethesda, MD, USA.²The Metis Foundation, San Antonio, TX, USA.³Department of Psychology, Fordham University Bronx, NY, USA.⁴Department of Preventative Medicine and Biostatistics, Uniformed Services University Bethesda, MD, USA.⁵Department of Medicine, Uniformed Services University Bethesda, MD, USA.⁶Department of Medical and Clinical Psychology, Uniformed Services University, Bethesda, MD, USA.⁷Department of Child and Adolescent Psychiatry and Behavioral Sciences, Children, Philadelphia, PA, USA.⁸Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.⁹Department of Family Medicine, Uniformed Services University, Bethesda, MD, USA.¹⁰Department of Family Medicine, David Grant Medical Center, Travis Air Force Base, CA, USA.¹¹Department of Pediatrics, Uniformed Services University, Bethesda, MD, USA.¹²School of Medicine, Washington University in St. Louis, St. Louis, MO, USA

OUTCOMES OF FAMILY-BASED TREATMENT FOR YOUTH WITH ATYPICAL ANOREXIA NERVOSA

Bek Urban, Dave Freestone, Jessica H Baker, Megan Hellner, Dori M Steinberg, Cara Bohon. Equip, Carlsbad, CA, USA

THE RELATIONSHIP BETWEEN COMPENSATORY BEHAVIORS AND TREATMENT OUTCOMES ARE BUFFERED BY HIGHER SELF-EFFICACY BELIEFS

Lucy Wetherall¹, Adrienne Juarascio², Stephanie Manasse³. ¹Drexel University, Philadelphia, PA, USA.²Drexel University, Philadelphia, PA, USA.³Drexel University, Philadelphia, PA, USA