Final answer:
The DSM-5 definition of mental disorder excludes culturally sanctioned, normative responses that do not result from a dysfunction. It is not about excluding responses from specific groups but rather about distinguishing disordered behavior from behavior that is considered normal within a cultural context.
Step-by-step explanation:
The DSM-5's definition of mental disorder is designed to encompass a range of criteria to diagnose psychological disorders, including substance use disorders. According to the DSM-5, mental disorders involve a significant disturbance in an individual's cognition, emotion regulation, or behavior that reflects a dysfunction in the psychological, biological, or developmental processes underlying mental functioning. Additionally, they usually result in significant distress or disability in social, occupational, or other important activities. The definition explicitly excludes responses that are culturally sanctioned, normative, and not the result of a dysfunction within the individual. Therefore, the responses that are excluded from the DSM-5 definition of mental disorder would not be the responses from any specific group of individuals (e.g., individuals with a DSM-5 diagnosis, mental health professionals, family members, or individuals without a diagnosis). Instead, it would exclude normal or culturally expected responses that do not stem from a dysfunction.