There is no scientific evidence to support the claim that psychopaths don't dream. Dreaming is a natural and universal phenomenon that occurs during the rapid eye movement (REM) stage of sleep. During REM sleep, the brain becomes highly active, and vivid dreams are experienced by most individuals, regardless of their psychological or personality traits.
Psychopathy is a complex personality disorder characterized by traits such as a lack of empathy, remorse, and a tendency to engage in manipulative and antisocial behaviors. While psychopaths may have differences in brain structure and function compared to non-psychopathic individuals, there is no indication that they would be exempt from the normal physiological process of dreaming during REM sleep.
It's important to distinguish between myths and facts when discussing mental health conditions and personality traits. As with any condition or trait, individual experiences and characteristics can vary widely, and making broad generalizations about an entire group of people, such as psychopaths, can be misleading and stigmatizing. Scientific research on psychopathy and dreaming is ongoing, and new findings may provide further insights into how psychopaths experience dreams and sleep patterns.