Evidence map›Paper›PMID 26474816›Full record

ArticleJournal of child psychology and psychiatry, and allied disciplines2016

The opposite end of the attention deficit hyperactivity disorder continuum: genetic and environmental aetiologies of extremely low ADHD traits.

Corina U Greven, Andrew Merwood, Jolanda M J van der Meer, Claire M A Haworth, Nanda Rommelse, Jan K Buitelaar

Abstract readTwin Study
In one paragraph

Article in Journal of child psychology and psychiatry, and allied disciplines, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  11. Genetics of Attention-Deficit Hyperactivity Disorder.Current topics in behavioral neurosciences · 2022
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  14. Review
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  18. ADHD and lifestyle habits in Czech adults, a national sample.Neuropsychiatric disease and treatment · 2018
    Article
  19. Article
  20. Tipping points? Curvilinear associations between activity level and mental development in toddlers.Journal of child psychology and psychiatry, and allied disciplines · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Corina U GrevenDepartment of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.
Andrew MerwoodMedical Research Council Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
Jolanda M J van der MeerDepartment of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.
Claire M A HaworthSchool of Experimental Psychology and School of Social and Community Medicine, MRC Integrative Epidemiology Unit at the University of Bristol, Coventry, UK.
Nanda RommelseKarakter Child and Adolescent Psychiatry University Center, Nijmegen, The Netherlands.
Jan K BuitelaarDepartment of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.ORCID http://orcid.org/0000-0001-8288-7757

Funding

Genetics of Mathematical Cognition and DisabilitiesR01HD059215 · NICHD · OHIO STATE UNIVERSITY · PI PETRILL, STEPHEN A. · 2009 to 2012
$2.4M
Medical Research Council G0500079Medical Research Council G0901245NICHD NIH HHS HD059215NICHD NIH HHS R01 HD059215
6 · The paper itself

Abstract

backgroundAlthough attention deficit hyperactivity disorder (ADHD) is thought to reflect a continuously distributed quantitative trait, it is assessed through binary diagnosis or skewed measures biased towards its high, symptomatic extreme. A growing trend is to study the positive tail of normally distributed traits, a promising avenue, for example, to study high intelligence to increase power for gene-hunting for intelligence. However, the emergence of such a 'positive genetics' model has been tempered for ADHD due to poor phenotypic resolution at the low extreme. Overcoming this methodological limitation, we conduct the first study to assess the aetiologies of low extreme ADHD traits.

methodsIn a population-representative sample of 2,143 twins, the Strength and Weaknesses of ADHD Symptoms and Normal behaviour (SWAN) questionnaire was used to assess ADHD traits on a continuum from low to high. Aetiological influences on extreme ADHD traits were estimated using DeFries-Fulker extremes analysis. ADHD traits were related to behavioural, cognitive and home environmental outcomes using regression.

resultsLow extreme ADHD traits were significantly influenced by shared environmental factors (23-35%) but were not significantly heritable. In contrast, high-extreme ADHD traits showed significant heritability (39-51%) but no shared environmental influences. Compared to individuals with high extreme or with average levels of ADHD traits, individuals with low extreme ADHD traits showed fewer internalizing and externalizing behaviour problems, better cognitive performance and more positive behaviours and positive home environmental outcomes.

conclusionsShared environmental influences on low extreme ADHD traits may reflect passive gene-environment correlation, which arises because parents provide environments as well as passing on genes. Studying the low extreme opens new avenues to study mechanisms underlying previously neglected positive behaviours. This is different from the current deficit-based model of intervention, but congruent with a population-level approach to improving youth wellbeing.

Indexed as

Gene-Environment InteractionSeverity of Illness IndexAdolescentAttention Deficit Disorder with HyperactivityDiseases in TwinsEnglandFemaleHumansMaleWalesAttention deficit hyperactivity disorderextremespositive geneticsquantitative traittwin

Identifiers

PMID26474816
PMCPMC4789118

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.