Which of the following symptoms is characterized by the total lack of motivation in patients with schizophrenia?

The symptom characterized by a total lack of motivation in patients with schizophrenia is avolition. Avolition is marked by a significant decrease in the ability to initiate and sustain purposeful activities. Individuals may struggle to engage in daily tasks, social interactions, or pursue goals, reflecting an absence of motivation or drive. This lack of motivation can lead to withdrawal from social situations and neglect of personal care, significantly impacting a person’s quality of life and functionality.

Anhedonia, while related, refers specifically to the inability to experience pleasure in activities that were once enjoyable, rather than a deficit in motivation itself. Apathy refers to a more generalized lack of interest or enthusiasm, which can overlap with avolition but is less specific to the motivational aspects in the context of initiating tasks. Alogia denotes a reduction in speech output and content, which can affect communication but does not directly address motivation. Avolition is the clear choice for defining the lack of motivation in individuals with schizophrenia.