@article{willcutt_comorbidity_2000,
	title = {Comorbidity of reading disability and attention-deficit/hyperactivity disorder: differences by gender and subtype.},
	volume = {33},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/15505947},
	abstract = {This study used a community sample of 494 twins with a reading disability (223 girls, 271 boys) and 373 twins without a reading disability (189 girls, 184 boys) to assess the relation between reading disability (RD) and attention-deficit/hyperactivity disorder (ADHD). Symptoms of DSM-III and DSM-IV ADHD were classified into symptoms of inattention and symptoms of hyperactivity-impulsivity (H/I). Results indicated that individuals with RD were more likely than individuals without RD to meet criteria for ADHD and that the association between RD and ADHD was stronger for symptoms of inattention than for symptoms of H/I. Parents and teachers reported similar rates of ADHD, suggesting that ADHD symptoms were pervasive across settings and were not solely attributable to academic frustration. Analyses of possible gender differences revealed that RD was significantly associated with inattention in both girls and boys but associated with H/I only in boys. This difference may provide a partial explanation for the discrepancy between the gender ratio obtained in referred (approximately 4 boys to 1 girl) and nonreferred (1.2 to 1.5 boys to 1 girl) samples of individuals with RD. Specifically, the hyperactive and impulsive behaviors exhibited by boys with RD may be more disruptive than the inattentive behaviors exhibited by girls and may therefore precipitate more frequent referrals for clinical attention.},
	number = {2},
	journal = {Journal of Learning Disabilities},
	author = {Willcutt, E G and Pennington, B F},
	year = {2000},
	pmid = {15505947},
	note = {Publisher: University of Colorado, Institute for Behavioral Genetics, Boulder 80309, USA.},
	keywords = {adolescent, attention deficit disorder with hyperactivity, attention deficit disorder with hyperactivity com, attention deficit disorder with hyperactivity gen, attention deficit disorder with hyperactivity psy, child, comorbidity, dyslexia, dyslexia complications, dyslexia genetics, dyslexia psychology, educational status, female, humans, intelligence tests, male, phenotype, risk factors, severity illness index, sex factors},
	pages = {179--191},
}

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Results indicated that individuals with RD were more likely than individuals without RD to meet criteria for ADHD and that the association between RD and ADHD was stronger for symptoms of inattention than for symptoms of H/I. Parents and teachers reported similar rates of ADHD, suggesting that ADHD symptoms were pervasive across settings and were not solely attributable to academic frustration. Analyses of possible gender differences revealed that RD was significantly associated with inattention in both girls and boys but associated with H/I only in boys. This difference may provide a partial explanation for the discrepancy between the gender ratio obtained in referred (approximately 4 boys to 1 girl) and nonreferred (1.2 to 1.5 boys to 1 girl) samples of individuals with RD. Specifically, the hyperactive and impulsive behaviors exhibited by boys with RD may be more disruptive than the inattentive behaviors exhibited by girls and may therefore precipitate more frequent referrals for clinical attention.","number":"2","journal":"Journal of Learning Disabilities","author":[{"propositions":[],"lastnames":["Willcutt"],"firstnames":["E","G"],"suffixes":[]},{"propositions":[],"lastnames":["Pennington"],"firstnames":["B","F"],"suffixes":[]}],"year":"2000","pmid":"15505947","note":"Publisher: University of Colorado, Institute for Behavioral Genetics, Boulder 80309, USA.","keywords":"adolescent, attention deficit disorder with hyperactivity, attention deficit disorder with hyperactivity com, attention deficit disorder with hyperactivity gen, attention deficit disorder with hyperactivity psy, child, comorbidity, dyslexia, dyslexia complications, dyslexia genetics, dyslexia psychology, educational status, female, humans, intelligence tests, male, phenotype, risk factors, severity illness index, sex factors","pages":"179–191","bibtex":"@article{willcutt_comorbidity_2000,\n\ttitle = {Comorbidity of reading disability and attention-deficit/hyperactivity disorder: differences by gender and subtype.},\n\tvolume = {33},\n\turl = {http://www.ncbi.nlm.nih.gov/pubmed/15505947},\n\tabstract = {This study used a community sample of 494 twins with a reading disability (223 girls, 271 boys) and 373 twins without a reading disability (189 girls, 184 boys) to assess the relation between reading disability (RD) and attention-deficit/hyperactivity disorder (ADHD). Symptoms of DSM-III and DSM-IV ADHD were classified into symptoms of inattention and symptoms of hyperactivity-impulsivity (H/I). Results indicated that individuals with RD were more likely than individuals without RD to meet criteria for ADHD and that the association between RD and ADHD was stronger for symptoms of inattention than for symptoms of H/I. Parents and teachers reported similar rates of ADHD, suggesting that ADHD symptoms were pervasive across settings and were not solely attributable to academic frustration. Analyses of possible gender differences revealed that RD was significantly associated with inattention in both girls and boys but associated with H/I only in boys. This difference may provide a partial explanation for the discrepancy between the gender ratio obtained in referred (approximately 4 boys to 1 girl) and nonreferred (1.2 to 1.5 boys to 1 girl) samples of individuals with RD. Specifically, the hyperactive and impulsive behaviors exhibited by boys with RD may be more disruptive than the inattentive behaviors exhibited by girls and may therefore precipitate more frequent referrals for clinical attention.},\n\tnumber = {2},\n\tjournal = {Journal of Learning Disabilities},\n\tauthor = {Willcutt, E G and Pennington, B F},\n\tyear = {2000},\n\tpmid = {15505947},\n\tnote = {Publisher: University of Colorado, Institute for Behavioral Genetics, Boulder 80309, USA.},\n\tkeywords = {adolescent, attention deficit disorder with hyperactivity, attention deficit disorder with hyperactivity com, attention deficit disorder with hyperactivity gen, attention deficit disorder with hyperactivity psy, child, comorbidity, dyslexia, dyslexia complications, dyslexia genetics, dyslexia psychology, educational status, female, humans, intelligence tests, male, phenotype, risk factors, severity illness index, sex factors},\n\tpages = {179--191},\n}\n\n","author_short":["Willcutt, E G","Pennington, B F"],"key":"willcutt_comorbidity_2000","id":"willcutt_comorbidity_2000","bibbaseid":"willcutt-pennington-comorbidityofreadingdisabilityandattentiondeficithyperactivitydisorderdifferencesbygenderandsubtype-2000","role":"author","urls":{"Paper":"http://www.ncbi.nlm.nih.gov/pubmed/15505947"},"keyword":["adolescent","attention deficit disorder with hyperactivity","attention deficit disorder with hyperactivity com","attention deficit disorder with hyperactivity gen","attention deficit disorder with hyperactivity psy","child","comorbidity","dyslexia","dyslexia complications","dyslexia genetics","dyslexia psychology","educational status","female","humans","intelligence tests","male","phenotype","risk factors","severity illness index","sex factors"],"metadata":{"authorlinks":{}},"html":""},"bibtype":"article","creationDate":"2020-09-30T20:09:47.792Z","downloads":0,"keywords":["adolescent","attention deficit disorder with hyperactivity","attention deficit disorder with hyperactivity com","attention deficit disorder with hyperactivity gen","attention deficit disorder with hyperactivity psy","child","comorbidity","dyslexia","dyslexia complications","dyslexia genetics","dyslexia psychology","educational status","female","humans","intelligence tests","male","phenotype","risk factors","severity illness index","sex factors"],"search_terms":["comorbidity","reading","disability","attention","deficit","hyperactivity","disorder","differences","gender","subtype","willcutt","pennington"],"title":"Comorbidity of reading disability and attention-deficit/hyperactivity disorder: differences by gender and subtype.","year":2000,"biburl":"https://bibbase.org/zotero/asrommel","dataSources":["J8fbWsdsy3xAaB3pX"]}