Dysthymia:A chronic, low-grade form of depression characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in daily activities.
Avolition:The lack of motivation or initiative to initiate or persist in goal-directed activities, often seen in individuals with schizophrenia or other psychotic disorders.
Amotivation: The absence of motivation or drive to engage in behaviors, leading to a lack of goal-directed activity, which is commonly observed in individuals with schizophrenia.