Fig. 1. Schematic of study protocol.
Participants first completed a baseline session during which demographic and clinical information was collected. Participants then underwent an ambulatory assessment protocol. The protocol was completed over four consecutive weekdays with 10 assessments per day. The beginning of each assessment was indicated by a beep, at which time the participants rated momentary mood and cognitive processes. Within 2 weeks of the baseline assessment and the ambulatory assessment, each participant underwent an fMRI session. The fMRI session included a sad mood induction. During the sad mood induction, three key words to remind participants of personal negative life events were presented for 1.5 min, each combined with sad background music (parts of Adagio in G minor by Albinoni)