Prior to EEG, subjects were administered the SCID-IV by Masters-level or PhD-level clinical interviewers. Those deemed eligible took part in a resting EEG recording on the same day as their SCID assessment, or shortly thereafter. At their EEG recording, participants completed the BDI-II to assess depressive symptom severity. They also completed the Mood and Anxiety Symptom Questionnaire [MASQ; 29], which yields four subscores: General Distress Anxious Symptoms (GDA), General Distress Depressive Symptoms (GDD), Anxious Arousal (AA), and Anhedonic Depression (AD). In the current sample, the BDI-II (α=0.97), total MASQ (α=0.86), and MASQ subscales (GDA α=0.91; GDD α=0.98; AA α=0.90; AD α=0.75) had good internal consistency.
