{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:58:53Z","timestamp":1785437933468,"version":"3.56.0"},"reference-count":62,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T00:00:00Z","timestamp":1767916800000},"content-version":"unspecified","delay-in-days":8,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100019274","name":"National Institute of Mental Health and Neurosciences","doi-asserted-by":"publisher","award":["MH082054"],"award-info":[{"award-number":["MH082054"]}],"id":[{"id":"10.13039\/100019274","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Psychol. Med."],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec id=\"S0033291725102948_sec1\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Girls with predispositions for disordered eating (DE) may select into weight-conscious peer groups (i.e. peer groups that emphasize body weight\/shape). However, factors driving selection into these peer groups remain unknown, as genetic and\/or environmental predisposition to DE may lead girls to select weight-conscious peers. To explore what may drive selection, the present study investigated whether genetic or shared environmental influences underlie associations between DE and exposure to weight-conscious peers and whether effects differ by pubertal status.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291725102948_sec2\" sec-type=\"methods\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Participants included 833 female twins (ages 8\u201315) from the Michigan State University Twin Registry. Bivariate twin models were conducted to explore etiologic overlap between DE and exposure to weight-conscious peers. Separate models were run for pre-early pubertal girls and mid-late pubertal girls given past research demonstrates differences in genetic and environmental contributions underlying eating pathology by pubertal status.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291725102948_sec3\" sec-type=\"results\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>During pre-early puberty, shared and non-shared environmental correlations accounted for the overlap between DE and weight-conscious peer group exposure. Furthermore, shared environmental and non-shared environmental influences underlying DE contributed to 33.3% and 20.0% of the individual differences in weight-conscious peer group membership, respectively. In mid-late puberty, the genetic and non-shared environmental correlations accounted for the overlap between DE and weight-conscious peer group exposure. Genetic and non-shared environmental influences underlying DE contributed to 37.5% and 19.4% of the variance in weight-conscious peer group membership, respectively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S0033291725102948_sec4\" sec-type=\"conclusions\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>While selection effects may exist across development, these effects may be driven by variance in DE due to shared environment in pre-early puberty and genes in mid-late puberty.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1017\/s0033291725102948","type":"journal-article","created":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T04:05:08Z","timestamp":1767931508000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["The contribution of genetic and environmental influences underlying disordered eating to exposure to weight-conscious peers"],"prefix":"10.1017","volume":"56","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7622-038X","authenticated-orcid":false,"given":"Shannon M.","family":"O\u2019Connor","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01pbdzh19","id-type":"ROR","asserted-by":"publisher"}],"name":"University of Toledo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5538-7431","authenticated-orcid":false,"given":"S. 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