Biological Factors in Attention Deficit-Hyperactivity
... 1977) or norepinephrine mechanisms (Shekim, Dekirmenjian, Chapel, Javaid, & Davis, 1979),
while others have not (Rapoport, Quinn, & Lamprecht, 1974; Wender, Epstein, Kopin, &
Gordon, 1971). Along with identifying a number of methodological limitations in such studies,
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