OBJECTIVE: The authors sought to determine whether nonaffected siblings of ADHD probands have a motor response inhibition deficit and to assess concordance for this inhibition deficit in ADHD-concordant and ADHD-discordant sibling pairs. METHOD: ADHD-concordant pairs (21 probands and their affected siblings), ADHD-discordant pairs (18 probands and their nonaffected siblings), and a group of unrelated, demographically balanced, healthy individuals (N=24) were compared on measures of response inhibition, ADHD behavior, impairment, and environmental risk. RESULTS: Concordant-pair probands, their affected siblings, and discordant-pair probands exhibited inhibitory control impairment relative to healthy comparison subjects. The performance of nonaffected siblings was intermediate between that of ADHD children and the healthy comparison subjects. Group differences persisted after age was controlled, and performance was not correlated with the number of ADHD symptoms. In ADHD-concordant sibling pairs, there was a significant relationship between proband and sibling inhibition deficit. In ADHD-discordant sibling pairs, inhibition deficit was evident in half of the nonaffected siblings of probands with an inhibition deficit. Groups did not differ in exposure to environmental risks. CONCLUSIONS: Impaired inhibitory control aggregates in the family members of individuals with ADHD and may serve as an indicator of genetic vulnerability to the disorder.
OBJECTIVE: The authors sought to determine whether nonaffected siblings of ADHD probands have a motor response inhibition deficit and to assess concordance for this inhibition deficit in ADHD-concordant and ADHD-discordant sibling pairs. METHOD:ADHD-concordant pairs (21 probands and their affected siblings), ADHD-discordant pairs (18 probands and their nonaffected siblings), and a group of unrelated, demographically balanced, healthy individuals (N=24) were compared on measures of response inhibition, ADHD behavior, impairment, and environmental risk. RESULTS: Concordant-pair probands, their affected siblings, and discordant-pair probands exhibited inhibitory control impairment relative to healthy comparison subjects. The performance of nonaffected siblings was intermediate between that of ADHDchildren and the healthy comparison subjects. Group differences persisted after age was controlled, and performance was not correlated with the number of ADHD symptoms. In ADHD-concordant sibling pairs, there was a significant relationship between proband and sibling inhibition deficit. In ADHD-discordant sibling pairs, inhibition deficit was evident in half of the nonaffected siblings of probands with an inhibition deficit. Groups did not differ in exposure to environmental risks. CONCLUSIONS: Impaired inhibitory control aggregates in the family members of individuals with ADHD and may serve as an indicator of genetic vulnerability to the disorder.
Authors: Adam R Aron; Sarah Durston; Dawn M Eagle; Gordon D Logan; Cathy M Stinear; Veit Stuphorn Journal: J Neurosci Date: 2007-10-31 Impact factor: 6.167
Authors: A C Wood; F Rijsdijk; K A Johnson; P Andreou; B Albrecht; A Arias-Vasquez; J K Buitelaar; G McLoughlin; N N J Rommelse; J A Sergeant; E J S Sonuga-Barke; H Uebel; J J van der Meere; T Banaschewski; M Gill; I Manor; A Miranda; F Mulas; R D Oades; H Roeyers; A Rothenberger; H C Steinhausen; S V Faraone; P Asherson; J Kuntsi Journal: Psychol Med Date: 2010-06-04 Impact factor: 7.723
Authors: Detre A Godinez; Erik G Willcutt; Gregory C Burgess; Brendan E Depue; Jessica R Andrews-Hanna; Marie T Banich Journal: Psychiatry Res Date: 2015-07-29 Impact factor: 3.222
Authors: J Crosbie; P Arnold; A Paterson; J Swanson; A Dupuis; X Li; J Shan; T Goodale; C Tam; L J Strug; R J Schachar Journal: J Abnorm Child Psychol Date: 2013-04
Authors: J John Mann; Victoria A Arango; Shelli Avenevoli; David A Brent; Frances A Champagne; Paula Clayton; Dianne Currier; Donald M Dougherty; Fatemah Haghighi; Susan E Hodge; Joel Kleinman; Thomas Lehner; Francis McMahon; Eve K Mościcki; Maria A Oquendo; Ganshayam N Pandey; Jane Pearson; Barbara Stanley; Joseph Terwilliger; Amy Wenzel Journal: Biol Psychiatry Date: 2009-02-07 Impact factor: 13.382