Abstract
The hypothesis that Attention-Deficit/Hyperactivity Disorder (ADHD)
reflects a primary inhibitory executive function deficit has spurred
a substantial literature. However, empirical findings and methodological
issues challenge the etiologic primacy of inhibitory and executive
deficits in ADHD. Based on accumulating evidence of increased intra-individual
variability in ADHD, we reconsider executive dysfunction in light
of distinctions between 'hot' and 'cool' executive function measures.
We propose an integrative model that incorporates new neuroanatomical
findings and emphasizes the interactions between parallel processing
pathways as potential loci for dysfunction. Such a reconceptualization
provides a means to transcend the limits of current models of executive
dysfunction in ADHD and suggests a plan for future research on cognition
grounded in neurophysiological and developmental considerations.
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