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However, while the regulation of negative affect has been the focus of much research, the literature on the role of positive emotion regulation in eating pathology is extremely limited. The present study extends previous research by examining the regulation of both positive and negative affect in disordered eating using two waves of a daily diary design.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Every evening for 21\u00a0days, 139 youths (8\u201315\u00a0years) reported their use of rumination, dampening, and disordered eating cognitions and behaviours. 1\u00a0year later, during the onset of the COVID\u201019 pandemic, 115 of these youths were followed\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>As predicted, higher levels of rumination and dampening were found to be associated with a higher frequency of weight concerns and restrictive eating on person\u2010level (both Waves) and day\u2010level (Wave 2). Further, a higher frequency of rumination at Wave 1 predicted increases in the frequency of restrictive eating 1\u00a0year later.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our findings underline the importance of examining regulation of both positive and negative emotion in order to understand eating disorder risk.<\/jats:p><\/jats:sec>","DOI":"10.1002\/erv.2993","type":"journal-article","created":{"date-parts":[[2023,6,9]],"date-time":"2023-06-09T07:48:25Z","timestamp":1686296905000},"page":"655-669","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Emotion regulation and disordered eating behaviour in youths: Two daily\u2010diary studies"],"prefix":"10.1002","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3485-4656","authenticated-orcid":false,"given":"Christine","family":"Dworschak","sequence":"first","affiliation":[{"name":"University of Zurich  Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reuma Gadassi","family":"Polack","sequence":"additional","affiliation":[{"name":"Yale University  New Haven Connecticut USA"},{"name":"The Academic College Tel Aviv Yaffo  Tel Aviv Yaffo Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia","family":"Winschel","sequence":"additional","affiliation":[{"name":"Yale University  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jutta","family":"Joormann","sequence":"additional","affiliation":[{"name":"Yale University  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hedy","family":"Kober","sequence":"additional","affiliation":[{"name":"Yale University  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,6,9]]},"reference":[{"key":"e_1_2_8_2_1","volume-title":"The children\u2019s response styles questionnaire","author":"Abela J. 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