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Articles by J. J van der Meere
Total Records ( 1 ) for J. J van der Meere
  J Kuntsi , 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 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 and P. Asherson
 

Context  Attention-deficit/hyperactivity disorder (ADHD) is associated with widespread cognitive impairments, but it is not known whether the apparent multiple impairments share etiological roots or separate etiological pathways exist. A better understanding of the etiological pathways is important for the development of targeted interventions and for identification of suitable intermediate phenotypes for molecular genetic investigations.

Objectives  To determine, by using a multivariate familial factor analysis approach, whether 1 or more familial factors underlie the slow and variable reaction times, impaired response inhibition, and choice impulsivity associated with ADHD.

Design  An ADHD and control sibling-pair design.

Setting  Belgium, Germany, Ireland, Israel, Spain, Switzerland, and the United Kingdom.

Participants  A total of 1265 participants, aged 6 to 18 years: 464 probands with ADHD and 456 of their siblings (524 with combined-subtype ADHD), and 345 control participants.

Main Outcome Measures  Performance on a 4-choice reaction time task, a go/no-go inhibition task, and a choice-delay task.

Results  The final model consisted of 2 familial factors. The larger factor, reflecting 85% of the familial variance of ADHD, captured 98% to 100% of the familial influences on mean reaction time and reaction time variability. The second, smaller factor, reflecting 13% of the familial variance of ADHD, captured 62% to 82% of the familial influences on commission and omission errors on the go/no-go task. Choice impulsivity was excluded in the final model because of poor fit.

Conclusions  The findings suggest the existence of 2 familial pathways to cognitive impairments in ADHD and indicate promising cognitive targets for future molecular genetic investigations. The familial distinction between the 2 cognitive impairments is consistent with recent theoretical models—a developmental model and an arousal-attention model—of 2 separable underlying processes in ADHD. Future research that tests the familial model within a developmental framework may inform developmentally sensitive interventions.

 
 
 
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