Could a simple activity-based therapy lift depression in older cancer survivors?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * As per self-report or medical record, ≥65 years old * As per self-report or medical record, has a history of cancer * As per medical record and/or self-report: * currently with no evidence of disease (NED) AND/OR * 6 months or more post-treatment * Fluent in English or Spanish, as per self-reported fluency of "well" or "very well"\* * As per self-report, able to communicate over video-conference and/or phone for sessions * Elevated score on the PHQ-9: ≥8 (N/A for Training Case participants) * Received a Blessed Orientation-Memory-Concentration Scale (BOMC) score of ≤ 11 (N/A for Training Case participants) Exclusion Criteria: * As per PI determination, requires a higher level of care for current passive or active suicidal ideation than current protocol is able to provide. If a participant receives a score of \> 0 on item 9 of the PHQ-9, they will be referred to study PI for further evaluation using the Columbia-Suicide Severity Rating Scale (CSSR) (MSK Standard) to determine level of risk;. Only those with active suicidal ideation will be excluded and referred to a higher level of care. * As per self-report or as documented in the medical record, current untreated (e.g., no medication, no therapy) major psychotic disorder (schizotypal personality disorder, schizophreniform disorder, schizoaffective disorder). Patients diagnosed with a major psychiatric disorder will be reviewed by the study PI to determine eligibility prior to consent. * As per self-report or medical record, currently taking antidepressant medication for \< 3 month * As per self-report, engagement in regular individual psychotherapeutic support that the participant is unable or unwilling to put on hold for the course of the study * \[MSK patients only\] As per medical record, patient has impaired decision-making capacity * Language verification: Prior to enrollment, patients will be asked the following two questions by research staff to verify English or Spanish fluency necessary for participation in the study: 1. How well do you speak English/ Spanish? (must respond "Well" or "Very well" when given the choices of Very well, Well, Not well, Not at all, Don't know, or Refused) 2. What is your preferred language for healthcare? (must respond English or Spanish)