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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Consortium PSYCHIATRICUM</journal-id><journal-title-group><journal-title xml:lang="en">Consortium PSYCHIATRICUM</journal-title><trans-title-group xml:lang="ru"><trans-title>Consortium PSYCHIATRICUM</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2712-7672</issn><issn publication-format="electronic">2713-2919</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">15736</article-id><article-id pub-id-type="doi">10.17816/CP15736</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RESEARCH</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Moderating effect of metacognition on the relationship between perfectionism, body image disturbance, and body mass index in anorexia nervosa: a cross-sectional study</article-title><trans-title-group xml:lang="ru"><trans-title>Модерирующий эффект метапознания на взаимосвязь перфекционизма, нарушения образа тела и индекса массы тела при нервной анорексии: поперечное исследование</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5347-0231</contrib-id><contrib-id contrib-id-type="spin">9649-8443</contrib-id><name-alternatives><name xml:lang="en"><surname>Chernov</surname><given-names>Nikita V.</given-names></name><name xml:lang="ru"><surname>Чернов</surname><given-names>Никита Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head of the Department of Psychotherapeutic Care and Social Rehabilitation</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7766-9675</contrib-id><contrib-id contrib-id-type="researcherid">ACG-0527-2022</contrib-id><contrib-id contrib-id-type="spin">5502-2307</contrib-id><name-alternatives><name xml:lang="en"><surname>Kibitov</surname><given-names>Andrey A.</given-names></name><name xml:lang="ru"><surname>Кибитов</surname><given-names>Андрей Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Scientific and Clinical Center for Neuropsychiatry</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4255-8240</contrib-id><contrib-id contrib-id-type="spin">9513-0968</contrib-id><name-alternatives><name xml:lang="en"><surname>Kulygina</surname><given-names>Maya A.</given-names></name><name xml:lang="ru"><surname>Кулыгина</surname><given-names>Майя Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci (Psychology), Leading Research, Scientific and Clinical Center for Neuropsychiatry, Associate professor, Department of Mental Health and Clinical Psychiatry, Faculty of Psychology</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0279-5180</contrib-id><contrib-id contrib-id-type="spin">2573-2755</contrib-id><name-alternatives><name xml:lang="en"><surname>Moiseeva</surname><given-names>Tatiana V.</given-names></name><name xml:lang="ru"><surname>Моисеева</surname><given-names>Татьяна Валентиновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci (Psychology), Medical psychologist</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0867-9364</contrib-id><name-alternatives><name xml:lang="en"><surname>Grishanina</surname><given-names>Alexandra M.</given-names></name><name xml:lang="ru"><surname>Гришанина</surname><given-names>Александра Максимовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Medical psychologist</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3994-3148</contrib-id><contrib-id contrib-id-type="scopus">59013159400</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedorova</surname><given-names>Ekaterina V.</given-names></name><name xml:lang="ru"><surname>Федорова</surname><given-names>Екатерина Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Medical psychologist</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-6448-1501</contrib-id><name-alternatives><name xml:lang="en"><surname>Ryauzova</surname><given-names>Elizaveta S.</given-names></name><name xml:lang="ru"><surname>Ряузова</surname><given-names>Елизавета Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Medical psychologist</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0958-0596</contrib-id><contrib-id contrib-id-type="spin">9600-0688</contrib-id><name-alternatives><name xml:lang="en"><surname>Karpenko</surname><given-names>Olga A.</given-names></name><name xml:lang="ru"><surname>Карпенко</surname><given-names>Ольга Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci (Med.), Principal Researcher, Scientific and Clinical Center for Neuropsychiatry</p></bio><email>n.chernov.psy@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Mental-health clinic No. 1 named after N.A. Alexeev</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Психиатрическая клиническая больница № 1 им. Н.А. Алексеева Департамента здравоохранения города Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Московский государственный университет имени М.В. Ломоносова»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-18" publication-format="electronic"><day>18</day><month>12</month><year>2025</year></pub-date><volume>6</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>24</fpage><lpage>34</lpage><history><date date-type="received" iso-8601-date="2025-08-19"><day>19</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-12-18"><day>18</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Chernov N.V., Kibitov A.A., Kulygina M.A., Moiseeva T.V., Grishanina A.M., Fedorova E.V., Ryauzova E.S., Karpenko O.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Чернов Н.В., Кибитов А.А., Кулыгина М.А., Моисеева Т.В., Гришанина А.М., Федорова Е.В., Ряузова Е.С., Карпенко О.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Chernov N.V., Kibitov A.A., Kulygina M.A., Moiseeva T.V., Grishanina A.M., Fedorova E.V., Ryauzova E.S., Karpenko O.A.</copyright-holder><copyright-holder xml:lang="ru">Чернов Н.В., Кибитов А.А., Кулыгина М.А., Моисеева Т.В., Гришанина А.М., Федорова Е.В., Ряузова Е.С., Карпенко О.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://consortium-psy.com/jour/article/view/15736">https://consortium-psy.com/jour/article/view/15736</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND: </bold>Despite theoretical concepts about the key role of perfectionism in the formation of the symptoms of anorexia nervosa (AN), the aspects of the mutual influence between body mass index (BMI), perfectionism, and body image in patients with AN remain insufficiently studied or contradictory. Studying integrative cognitive processes, such as metacognition, may reveal new mechanisms of perfectionism’s influence on the clinical manifestations of AN.</p> <p><bold>AIM: </bold>The assessment of the moderating effect of metacognition on perfectionism associated with BMI and body image in patients with AN.</p> <p><bold>METHODS:</bold> A cross-sectional study was conducted involving patients with AN who were undergoing inpatient treatment. Perception of one’s own body was assessed using the Body Image Questionnaire. Perfectionism was assessed using the Multidimensional Perfectionism Scale. The level of metacognition of patients was assessed using the Metacognition Assessment Scale-Abbreviated, which evaluates Self-reflectivity, Understanding the other’s mind, Decentration, and Mastery (the ability to develop adaptive strategies for coping and behaviour regulation). BMI was also recorded.</p> <p><bold>RESULTS:</bold> A total of 130 patients were examined. At a Mastery score of ≥4 higher perfectionism scores were associated with an increase in BMI, and at a Mastery level of ≤1 a higher level of perfectionism was associated with decreasing of BMI. Even with minimal Self-reflectivity scores (≥2), the negative effect of perfectionism on body image was evident. Body image disturbance was positively correlated with perfectionism. No correlations were found between BMI and perfectionism and between BMI and body image disturbance.</p> <p><bold>CONCLUSION:</bold> The effect of perfectionism on body image disturbance and BMI in patients with AN depends on the magnitude of Self-reflectivity and Mastery. The obtained data indicate the necessity of incorporating psychotherapy aimed at the development of metacognition in patients with AN.</p></abstract><trans-abstract xml:lang="ru"><p><bold>ВВЕДЕНИЕ:</bold> Несмотря на теоретические концепции о ключевой роли перфекционизма в формировании симптомов нервной анорексии (НА), вопросы взаимного влияния индекса массы тела (ИМТ), перфекционизма и образа тела при НА остаются недостаточно изученными или противоречивыми. Анализ интегративных когнитивных процессов, таких как метапознание, может выявить новые механизмы влияния перфекционизма на клинические проявления НА.</p> <p><bold>ЦЕЛЬ: </bold>Оценка модерирующего влияния метапознания на ассоциацию перфекционизма с ИМТ и образом собственного тела у пациентов с НА.</p> <p><bold>МЕТОДЫ:</bold> Проведено поперечное исследование с участием пациентов с НА, находившихся на стационарном лечении. Восприятие собственного тела оценивалось с помощью «Опросника образа собственного тела», перфекционизм — с помощью «Многомерной шкалы перфекционизма» (Multidimensional Perfectionism Scale, MPS). Уровень метапознания пациентов определяли по «Сокращенной шкале метапознания» (Metacognition Assessment Scale-Abbreviated, MAS-A), измеряющей саморефлексию, понимание других, децентрацию и мастерство (способность к выработке адаптивных стратегий совладания и регуляции поведения). Дополнительно регистрировался ИМТ.</p> <p><bold>РЕЗУЛЬТАТЫ:</bold> Обследовано 130 пациентов. При уровне мастерства ≥4 баллов более высокие показатели перфекционизма были ассоциированы с увеличением ИМТ, тогда как при уровне мастерства ≤1 балла более высокая выраженность перфекционизма была связана со снижением ИМТ. Даже при минимально выраженной саморефлексии (≥2 баллов) выявлено негативное влияние перфекционизма на образ тела. Нарушение восприятия своего тела положительно коррелировало с перфекционизмом. При этом значимых корреляций между ИМТ и перфекционизмом, а также между ИМТ и нарушением образа тела обнаружено не было.</p> <p><bold>ЗАКЛЮЧЕНИЕ:</bold> Влияние перфекционизма на нарушение образа тела и на динамику ИМТ у пациентов с НА опосредовано выраженностью саморефлексии и мастерства. Полученные данные указывают на необходимость подключения психотерапии, направленной на развитие метапознания у данной категории пациентов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>anorexia nervosa</kwd><kwd>perfectionism</kwd><kwd>metacognition</kwd><kwd>body image disturbance</kwd><kwd>body image disturbance</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>нервная анорексия</kwd><kwd>перфекционизм</kwd><kwd>метапознание</kwd><kwd>нарушение образа тела</kwd><kwd>индекс массы тела</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Moscow Department of Healthcare</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Департамент здравоохранения города Москвы</institution></institution-wrap></funding-source><award-id>1196</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>6B80 Anorexia Nervosa [Internet]. 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