Final answer:
A serial killer would likely be diagnosed with antisocial personality disorder in the DSM.
Step-by-step explanation:
In the Diagnostic and Statistical Manual (DSM), a serial killer would likely be diagnosed as having antisocial personality disorder.
Antisocial personality disorder is characterized by a pervasive pattern of disregard for and violation of the rights of others. Individuals with antisocial personality disorder display a lack of empathy and remorse, engage in impulsive and irresponsible behavior, and often have a history of conduct problems in childhood.
It's important to note that the diagnosis of a personality disorder requires a comprehensive evaluation by a trained mental health professional.