- Alogia is the inability to speak because of mental deficiency, mental confusion, or aphasia.
- Alogia is one of the "negative" symptoms of schizophrenia, where it may take the form of speaking very little or a lack of spontaneous content in conversation, called "poverty of speech."
Conversation with alogia: Do you have a job? Yes. Where do you work? White Hen. What do you do there? I'm a cashier. How long have you worked there? Six years.