Science Quiz / Studies About ADHD

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Can you name the Studies or Theories About ADHD?

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DescriptionResearcher/TheoryDate
Represents the probability that ADHD will be detected when present in a clinical population.
Environmental factors include alcohol and nicotine use during pregnancy, low birth rate, maternal stress and exposure to lead during childhood.2007
Review of 8 meta-analyses and found worse performance on EF tasks in ADHD compared to controls. Only small effects in stoop and VS tasks.2005
Worse behavioural performance is associated with abnormal brain activation in the EF networks.2007
Increased theta waves compared to beta waves are found in ADHD. This wave was predictive of ADHD in 159 children, of which 61% had ADHD.2008
Represents the probability that the absence of ADHD will be detected when the full disorder is not present.
Prevalence of ADHD in children.
Concordance of 50-80% in MZs and 33% in DZs.2001
Frontal lobes are smaller in structure in ADHD.2006
Frontal lobes are underactivated in ADHD children during cognitive tasks.2005
Assessment which involves a continuous performance test with additional infrared motion detection.
Shaw et al (2007) age of peak cortical thickness was delayed in patients with ADHD by 3 years.2007
Reduced striatum activation when anticipating the gain in male adults with ADHD, and increased OF activation when presented with gain (over-sensitivity to reward).2008
Pooled analysis of 20 international twin studies, heritability = 0.76.2005
Positive correlation between CSF levels of HVA (dopaminergic metabolite) and severity of behavioural symptoms/response to medication.1996
DescriptionResearcher/TheoryDate
The CPF - scores for attention, hyperactivity and impulsivity.
Only 23% had a deficit in both inhibition and delay aversion. 39% had neither.2005
Biological relatives of non-adopted childrne had higher rates of symptoms that adopted relatives.2006
Cognitive impairments result from a ............. state in the PFC.
Siblings are 3-5x more at risk of developing ADHD.1993
Increased dopamine transporter density found in the striatum of ADHD.1999
Inhibition was the most dominant candidate in ADHD deficits.1997
Smaller brain, less white and grey matter and smaller sub-cortical areas in ADHD.2002
The Qb test reduced the risk of unidentified ADHD in 108 children in two year follow up.2011
People with ADHD went for the lower reward now rather than the larger reward later (delay aversion).2001
Hyperactivity and impulsivity symptoms result from a .......... state.
Dysfunction in the catecholamingeric system, especially the dopaminergic system.
Triple route model - 3 deficits which are found in children with ADHD - inhibitory control, delay-related and temporal processing deficits. Cocurrence was no greater than chance.2010
Activity in the default network mode is atypical in ADHD, and there is too much activity.2010
Animal study showing that increased dopamine transmisison in the ventral striatum induces hyperactivity.2000

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