Participants
bipolar disorder, depressive, depressed, MDD, depression
Patients were recruited online by responding to two screening questions about depressive symptoms: “Have you been feeling depressed for most of the day, on most days?” and “Have you been feeling less interested in or losing interest in things you normally like?” Those who answered “yes” to both questions received a phone screening from trained researchers who investigated depression and bipolar disorder symptoms using a checklist developed by the authors, adapted from DSM criteria [The eligibility criteria were: (1) age between 18–59 years; (2) MDD without comorbidities diagnosed by the Structured Clinical Interview for DSM-IV [