{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T09:36:51Z","timestamp":1790933811395,"version":"4.1.0"},"reference-count":46,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2022,1,7]],"date-time":"2022-01-07T00:00:00Z","timestamp":1641513600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Atten Disord"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>ADHD and ODD are commonly co-occurring, but often studied individually. This study evaluated common trajectories of these disorders and explored how they co-develop in early childhood.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method:<\/jats:title>\n                    <jats:p>Community parents ( N\u2009=\u2009273) completed online surveys about their 2-year-old. Children\u2019s inattention, hyperactivity\/impulsivity, and oppositional defiant disorder symptoms over 2\u2009years were examined using latent class, dual trajectory, and cross-lagged analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Most children followed low symptom trajectories. A small portion showed high, moderate, or increasing trajectories. The hyperactive\/impulsive domain of ADHD showed a declining symptoms group. Children in high ODD groups were likely to be in high ADHD symptom groups; the converse was true but probabilities were lower. Hyperactive\/impulsive symptoms predicted ODD symptoms across time, more than vice versa.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The study extends the small body of literature assessing early development of ADHD and ODD. Findings suggest that earlier intervention for symptoms of ADHD may mitigate risk of developing ODD.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10870547211068042","type":"journal-article","created":{"date-parts":[[2022,1,8]],"date-time":"2022-01-08T00:25:44Z","timestamp":1641601544000},"page":"1335-1346","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":10,"title":["Early Development of ADHD and ODD Symptoms from the Toddler to Preschool Years"],"prefix":"10.1177","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9060-4892","authenticated-orcid":false,"given":"Hallie R.","family":"Brown","sequence":"first","affiliation":[{"name":"Center for Autism and the Developing Brain, NewYork-Presbyterian\/Weill Cornell Medical Center, White Plains, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Holly B.","family":"Laws","sequence":"additional","affiliation":[{"name":"University of Massachusetts Amherst, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth A.","family":"Harvey","sequence":"additional","affiliation":[{"name":"University of Massachusetts Amherst, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,1,7]]},"reference":[{"key":"bibr1-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596"},{"key":"bibr2-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1080\/10705511.2014.915181"},{"key":"bibr3-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1038\/scientificamerican0998-66"},{"key":"bibr4-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.2010.09091272"},{"key":"bibr5-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1080\/15374416.2018.1485105"},{"key":"bibr6-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7610.2005.00422.x"},{"key":"bibr7-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1023\/A:1015102812958"},{"key":"bibr8-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-416008-8.00004-8"},{"key":"bibr9-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1007\/BF00920755"},{"key":"bibr10-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1037\/1082-989X.6.4.330"},{"key":"bibr11-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1007\/s10802-016-0170-8"},{"key":"bibr12-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1037\/pas0000166"},{"key":"bibr13-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1186\/1753-2000-2-15"},{"key":"bibr14-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1177\/1087054708322991"},{"key":"bibr15-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1080\/15374416.2018.1534206"},{"key":"bibr16-10870547211068042","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.159.7.1214"},{"key":"bibr17-10870547211068042","unstructured":"Hamaker E. 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