Flat affect意思

"Flat affect" is a term used in psychology and psychiatry to describe a person's emotional response that appears dull, constricted, or lacking in expressiveness. It is often observed in individuals with certain psychiatric disorders, such as schizophrenia, major depressive disorder, or autism spectrum disorder. People with flat affect may have difficulty showing emotions through facial expressions, voice tone, and body language, which can make it challenging for them to communicate their feelings to others.