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Genetics of Preparation and Response Control in ADHD: The Role of DRD4 and DAT1
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Albrecht, Björn; Brandeis, Daniel; Uebel-von Sandersleben, Henrik; Valko, Lilian; Heinrich, Hartmut; Xu, Xiaohui; Drechsler, Renate; Heise, Alexander; Kuntsi, Jonna; Müller, Ueli C.; Asherson, Philip; Steinhausen, Hans-Christoph; Rothenberger, Aribert; Banaschewski, Tobias – Journal of Child Psychology and Psychiatry, 2014
Background: Difficulties with performance and brain activity related to attentional orienting (Cue-P3), cognitive or response preparation (Cue-CNV) and inhibitory response control (Nogo-P3) during tasks tapping executive functions are familial in ADHD and may represent endophenotypes. The aim of this study was to clarify the impact of dopamine…
Descriptors: Attention Deficit Hyperactivity Disorder, Genetics, Responses, Inhibition
A Longitudinal Twin Study on the Association between ADHD Symptoms and Reading
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Greven, Corina U.; Rijsdijk, Fruhling V.; Asherson, Philip; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2012
Background: Attention deficit hyperactivity disorder (ADHD) and reading disability commonly co-occur because of shared genetic risk factors. However, the stability and change of these genetic influences and the predictive relationships underlying this association longitudinally remain unclear. Methods: ADHD symptoms and reading were assessed as…
Descriptors: Attention Deficit Hyperactivity Disorder, Twins, Early Adolescents, Risk
The Hierarchical Factor Model of ADHD: Invariant across Age and National Groupings?
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Toplak, Maggie E.; Sorge, Geoff B.; Flora, David B.; Chen, Wai; Banaschewski, Tobias; Buitelaar, Jan; Ebstein, Richard; Eisenberg, Jacques; Franke, Barbara; Gill, Michael; Miranda, Ana; Oades, Robert D.; Roeyers, Herbert; Rothenberger, Aribert; Sergeant, Joseph; Sonuga-Barke, Edmund; Steinhausen, Hans-Christoph; Thompson, Margaret; Tannock, Rosemary; Asherson, Philip; Faraone, Stephen V. – Journal of Child Psychology and Psychiatry, 2012
Objective: To examine the factor structure of attention-deficit/hyperactivity disorder (ADHD) in a clinical sample of 1,373 children and adolescents with ADHD and their 1,772 unselected siblings recruited from different countries across a large age range. Hierarchical and correlated factor analytic models were compared separately in the ADHD and…
Descriptors: Attention Deficit Hyperactivity Disorder, Siblings, Factor Structure, Adolescents
Aetiology for the Covariation between Combined Type ADHD and Reading Difficulties in a Family Study: The Role of IQ
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Cheung, Celeste H. M.; Wood, Alexis C.; Paloyelis, Yannis; Arias-Vasquez, Alejandro; Buitelaar, Jan K.; Franke, Barbara; Miranda, Ana; Mulas, Fernando; Rommelse, Nanda; Sergeant, Joseph A.; Sonuga-Barke, Edmund J.; Faraone, Stephen V.; Asherson, Philip; Kuntsi, Jonna – Journal of Child Psychology and Psychiatry, 2012
Background: Twin studies using both clinical and population-based samples suggest that the frequent co-occurrence of attention deficit hyperactivity disorder (ADHD) and reading ability/disability (RD) is largely driven by shared genetic influences. While both disorders are associated with lower IQ, recent twin data suggest that the shared genetic…
Descriptors: Attention Deficit Hyperactivity Disorder, Reading Difficulties, Siblings, Intelligence Quotient
Neuropsychological Correlates of Emotional Lability in Children with ADHD
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Banaschewski, Tobias; Jennen-Steinmetz, Christine; Brandeis, Daniel; Buitelaar, Jan K.; Kuntsi, Jonna; Poustka, Luise; Sergeant, Joseph A.; Sonuga-Barke, Edmund J.; Frazier-Wood, Alexis C.; Albrecht, Bjorn; Chen, Wai; Uebel, Henrik; Schlotz, Wolff; van der Meere, Jaap J.; Gill, Michael; Manor, Iris; Miranda, Ana; Mulas, Fernando; Oades, Robert D.; Roeyers, Herbert; Rothenberger, Aribert; Steinhausen, Hans-Christoph; Faraone, Stephen V.; Asherson, Philip – Journal of Child Psychology and Psychiatry, 2012
Background: Emotional lability (EL) is commonly seen in patients with attention-deficit/hyperactivity disorder (ADHD). The reasons for this association remain currently unknown. To address this question, we examined the relationship between ADHD and EL symptoms, and performance on a range of neuropsychological tasks to clarify whether EL symptoms…
Descriptors: Attention Deficit Hyperactivity Disorder, Siblings, Severity (of Disability), Patients
Shared Genetic Influences on ADHD Symptoms and Very Low-Frequency EEG Activity: A Twin Study
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Tye, Charlotte; Rijsdijk, Fruhling; Greven, Corina U.; Kuntsi, Jonna; Asherson, Philip; McLoughlin, Grainne – Journal of Child Psychology and Psychiatry, 2012
Background: Attention deficit hyperactivity disorder (ADHD) is a common and highly heritable neurodevelopmental disorder with a complex aetiology. The identification of candidate intermediate phenotypes that are both heritable and genetically linked to ADHD may facilitate the detection of susceptibility genes and elucidate aetiological pathways.…
Descriptors: Attention Deficit Hyperactivity Disorder, Twins, Genetics, Genetic Disorders
The Genetic Etiology of Inhibitory Control and Behavior Problems at 24 Months of Age
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Gagne, Jeffrey R.; Saudino, Kimberly J.; Asherson, Philip – Journal of Child Psychology and Psychiatry, 2011
Background: To investigate links between inhibitory control (IC) and behavior problems in early childhood, as well as genetic and environmental covariances between these two constructs. Methods: Parent and laboratory ratings of IC and parent ratings of externalizing and attention deficit hyperactivity disorder behaviors were administered at 24…
Descriptors: Attention Deficit Hyperactivity Disorder, Twins, Behavior Problems, Risk
Performance Variability, Impulsivity Errors and the Impact of Incentives as Gender-Independent Endophenotypes for ADHD
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Uebel, Henrik; Albrecht, Bjorn; Asherson, Philip; Borger, Norbert A.; Butler, Louise; Chen, Wai; Christiansen, Hanna; Heise, Alexander; Kuntsi, Jonna; Schafer, Ulrike; Andreou, Penny; Manor, Iris; Marco, Rafaela; Miranda, Ana; Mulligan, Aisling; Oades, Robert D.; van der Meere, Jaap; Faraone, Stephen V.; Rothenberger, Aribert; Banaschewski, Tobias – Journal of Child Psychology and Psychiatry, 2010
Background: Attention-deficit hyperactivity disorder (ADHD) is one of the most common and highly heritable child psychiatric disorders. There is strong evidence that children with ADHD show slower and more variable responses in tasks such as Go/Nogo tapping aspects of executive functions like sustained attention and response control which may be…
Descriptors: Siblings, Attention Deficit Hyperactivity Disorder, Genetics, Cognitive Processes
Emotional Lability in Children and Adolescents with Attention Deficit/Hyperactivity Disorder (ADHD): Clinical Correlates and Familial Prevalence
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Sobanski, Esther; Banaschewski, Tobias; Asherson, Philip; Buitelaar, Jan; Chen, Wai; Franke, Barbara; Holtmann, Martin; Krumm, Bertram; Sergeant, Joseph; Sonuga-Barke, Edmund; Stringaris, Argyris; Taylor, Eric; Anney, Richard; Ebstein, Richard P.; Gill, Michael; Miranda, Ana; Mulas, Fernando; Oades, Robert D.; Roeyers, Herbert; Rothenberger, Aribert; Steinhausen, Hans-Christoph; Faraone, Stephen V. – Journal of Child Psychology and Psychiatry, 2010
Background: The goal of this study was to investigate the occurrence, severity and clinical correlates of emotional lability (EL) in children with attention deficit/hyperactivity disorder (ADHD), and to examine factors contributing to EL and familiality of EL in youth with ADHD. Methods: One thousand, one hundred and eighty-six children with ADHD…
Descriptors: Emotional Problems, Siblings, Substance Abuse, Incidence
Dopamine and Serotonin Transporter Genotypes Moderate Sensitivity to Maternal Expressed Emotion: The Case of Conduct and Emotional Problems in Attention Deficit/Hyperactivity Disorder
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Sonuga-Barke, Edmund J. S.; Oades, Robert D.; Psychogiou, Lamprini; Chen, Wai; Franke, Barbara; Buitelaar, Jan; Banaschewski, Tobias; Ebstein, Richard P.; Gil, Michael; Anney, Richard; Miranda, Ana; Roeyers, Herbert; Rothenberger, Aribert; Sergeant, Joseph; Steinhausen, Hans Christoph; Thompson, Margaret; Asherson, Philip; Faraone, Stephen V. – Journal of Child Psychology and Psychiatry, 2009
Background: Mothers' positive emotions expressed about their children with attention deficit/hyperactivity disorder (ADHD) are associated with a reduced likelihood of comorbid conduct problems (CP). We examined whether this association with CP, and one with emotional problems (EMO), is moderated by variants within three genes, previously reported…
Descriptors: Emotional Problems, Hyperactivity, Attention Deficit Disorders, Patients
Evidence for Overlapping Genetic Influences on Autistic and ADHD Behaviours in a Community Twin Sample
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Ronald, Angelica; Simonoff, Emily; Kuntsi, Jonna; Asherson, Philip; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2008
Background: High levels of clinical comorbidity have been reported between autistic spectrum disorders (ASD) and attention deficit hyperactivity disorder (ADHD). This study takes an individual differences approach to determine the degree of phenotypic and aetiological overlap between autistic traits and ADHD behaviours in the general population.…
Descriptors: Twins, Autism, Asperger Syndrome, Psychologists
The Dopamine Receptor D4 7-Repeat Allele and Prenatal Smoking in ADHD-Affected Children and Their Unaffected Siblings: No Gene-Environment Interaction
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Altink, Marieke E.; Arias-Vasquez, Alejandro; Franke, Barbara; Slaats-Willemse, Dorine I. E.; Buschgens, Cathelijne J. M.; Rommelse, Nanda N. J.; Fliers, Ellen A.; Anney, Richard; Brookes, Keeley-Joanne; Chen, Wai; Gill, Michael; Mulligan, Aisling; Sonuga-Barke, Edmund; Thompson, Margaret; Sergeant, Joseph A.; Faraone, Stephen V.; Asherson, Philip; Buitelaar, Jan K. – Journal of Child Psychology and Psychiatry, 2008
Background: The dopamine receptor D4 ("DRD4") 7-repeat allele and maternal smoking during pregnancy are both considered as risk factors in the aetiology of attention deficit hyperactivity disorder (ADHD), but few studies have been conducted on their interactive effects in causing ADHD. The purpose of this study is to examine the gene by…
Descriptors: Siblings, Smoking, Attention Deficit Hyperactivity Disorder, Pregnancy
Genetic Influences on Mechanically-Assessed Activity Level in Children
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Wood, Alexis C.; Saudino, Kimberly J.; Rogers, Hannah; Asherson, Philip; Kuntsi, Jonna – Journal of Child Psychology and Psychiatry, 2007
Background: Activity level is an important component of children's temperament, as well as being part of the core symptom domain of hyperactivity-impulsivity within attention deficit hyperactivity disorder (ADHD). Yet it is poorly understood, due partly to limitations on parent and teacher ratings, which are typically used as measurements of these…
Descriptors: Twins, Testing, Hyperactivity, Attention Deficit Disorders