1\. Individual participated in original Characterizing Cognitive Decline in Late Life Depression study or Multimodal MRI Characteristics of Psychotherapy Response in Late Life Depression Study.
Exclusion Exceptions:
1. Antidepressant medication treatment is allowed only if the medication dose is stable for 4 weeks prior to the MRI scan.
2. Psychotherapy interventions is allowed only if they have completed at least 4 weeks of individual or group psychotherapy intervention prior to the MRI scan.
3. Participants taking cognitive enhancing medications will be able to enter the study.
