Inclusion Criteria:  - Patient meets criteria for having experienced a (past or present) disorder marked by clinically significant mood instability, depression, and/or psychotic features (i.e., diagnosed with a mood disorder, adjustment disorder with depressed mood, or psychotic disorder) OR they are at clinical high risk for psychosis  Exclusion Criteria:  Patient's current severity of illness interferes with participation in a group treatment (e.g., preoccupied with internal stimuli) Patient has a current substance use disorder Patient has a pervasive developmental disorder or intellectual disability Patient cannot speak and read English sufficiently to allow for valid interpretation of a clinical assessment provided in English