Sex differences in ADHD symptom severity.
J Child Psychol Psychiatry
; 56(6): 632-9, 2015 Jun.
Article
em En
| MEDLINE
| ID: mdl-25283790
ABSTRACT
BACKGROUND:
Males show higher rates of attention deficit hyperactivity disorder (ADHD) than do females. Potential explanations include genuine etiological differences or artifact.METHODS:
2,332 twin and sibling youth participated in behavioral and cognitive testing. Partially competing models of symptom severity distribution differences, the mean difference, and variance difference models, were tested within a randomly selected subsample. The Delta method was used to test for mediation of sex differences in ADHD symptom severity by processing speed, inhibition and working memory.RESULTS:
The combined mean difference and variance difference models fully explained the sex difference in ADHD symptom severity. Cognitive endophenotypes mediated 14% of the sex difference effect.CONCLUSIONS:
The sex difference in ADHD symptom severity is valid and may be due to differing genetic and cognitive liabilities between the sexes.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transtorno do Deficit de Atenção com Hiperatividade
/
Doenças em Gêmeos
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Endofenótipos
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Adolescent
/
Adult
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Child
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Female
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Humans
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Male
Idioma:
En
Revista:
J Child Psychol Psychiatry
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Estados Unidos