- Current or previous (within the past year) diagnosis of major depressive disorder, mania, bipolar disorder, psychosis, dysthymia, generalised anxiety disorder, alcohol or substance abuse excluding caffeine or nicotine, impulse control disorders (e.g. pathological gambling), dementia or eating disorders according to Diagnostic and Statistical Manual of Mental Disorders, 4th edition, text revision (DSM-IV) American Psychiatric Association, 2000 criteria, as determined by the investigator.