 developmental or learning disability; 4) age 18-65; 5) a history
free of neurological or endocrine disorder; and 6) no concurrent DSM-IV-TR
diagnosis of substance use disorder.</p>
<p>Non-psychiatric control participants (n = 146) were screened for medical and
psychiatric illness and history of substance abuse. Patients were recruited
from three outpatient clinics in Hamilton, Ontario, Canada. Control
participants were recruited through local newspaper and online classified
advertisements for paid research