There is a need for future clinical trials of nonpharmacological
interventions in ADHD to include blinded
measures to ensure their efficacy as treatments for core ADHD
symptoms. It is probable that parental report of symptoms following
parenting interventions is prone to bias after the investment
of time that parents spend in delivering the intervention.
However, it is important to remember that parenting interventions
should be seen as components of treatment targeting
a wide range of outcomes and may provide additional benefit
for child and parental well-being beyond ADHD symptom reduction (Sonuga-Barke et al. 2006). During treatment
planning, clinicians should consider factors known to lead
to poorer treatment outcomes from parenting interventions.
These include broad co-morbidity in children, parental ADHD
symptoms, parenting efficacy and parental depressive symptoms
(Sonuga-Barke et al. 2002; Owens et al. 2003; van den
Hoofdakker et al. 2010).