{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T11:16:18Z","timestamp":1790766978715,"version":"4.1.0"},"reference-count":26,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2010,6,24]],"date-time":"2010-06-24T00:00:00Z","timestamp":1277337600000},"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":[[2011,8]]},"abstract":"<jats:p>Objective: The validity of a diagnosis of ADHD in children with a high intelligence quotient (IQ) remains controversial. Using a multidisciplinary approach, rigorous diagnostic criteria, and worldwide-validated psychometric instruments, we identified a group of children attending public schools in southern Brazil for co-occurrence of high IQ and ADHD. Method: Students attending public schools, in the first to fifth grades, were referred to our Research Center for behavioral and\/or learning difficulties. These children completed clinical, psychiatric, psychological, and pedagogical evaluations for assessment of IQ, ADHD, learning, and other emotional or behavioral disorders. Results: Fifteen of the participants were identified to have a full-scale IQ \u2265 120. Data show that 10 of these high-IQ children met the DSM-IV criteria diagnosis for ADHD combined type, 5 met criteria for current oppositional-defiant disorder, 2 had current major depression, and 2 had a learning disorder. Here we present the results as a case series. Conclusion: Our data support the hypothesis that ADHD is a valid diagnosis in children with high IQs.<\/jats:p>","DOI":"10.1177\/1087054710370569","type":"journal-article","created":{"date-parts":[[2010,6,25]],"date-time":"2010-06-25T00:24:33Z","timestamp":1277425473000},"page":"485-490","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":23,"title":["Co-Occurrence of ADHD and High IQ"],"prefix":"10.1177","volume":"15","author":[{"given":"Mara L.","family":"Cordeiro","sequence":"first","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"},{"name":"Faculdades Pequeno Pr\u00edncipe, Curitiba, Brazil"},{"name":"University of California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonio C.","family":"Farias","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"},{"name":"Faculdades Pequeno Pr\u00edncipe, Curitiba, Brazil"},{"name":"Children\u2019s Hospital Pequeno Pr\u00edncipe, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandre","family":"Cunha","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"},{"name":"Faculdades Pequeno Pr\u00edncipe, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C\u00e1ssia R.","family":"Benko","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"},{"name":"Faculdades Pequeno Pr\u00edncipe, Curitiba, Brazil"},{"name":"Children\u2019s Hospital Pequeno Pr\u00edncipe, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucilene G.","family":"Farias","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"},{"name":"Faculdades Pequeno Pr\u00edncipe, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria T.","family":"Costa","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leandra F.","family":"Martins","sequence":"additional","affiliation":[{"name":"Pel\u00e9 Pequeno Pr\u00edncipe Research Institute, Curitiba, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James T.","family":"McCracken","sequence":"additional","affiliation":[{"name":"University of California, Los Angeles, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2010,6,24]]},"reference":[{"key":"bibr1-1087054710370569","volume-title":"Manual for the child behavior checklist\/4-18 and 1991 profile","author":"Achenbach T. 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