You must outline onemajor topicof inquiry in psychopharmacology. This topic is attention deficit/hyperactivity disorder. Present the primary research approaches employed to study this area, as well as the main findings and interpretations of this research, must then be presented. For example, explain me about attention deficit/hyperactivity disorder, what it is, how we have explored attention deficit/hyperactivity disorder within the field of psychopharmacology, and what we now know about likely causes, medications that treat attention deficit/hyperactivity disorder and why they work, and what the future may hold in this area.