Final answer:
The limitation of using deviation from social norms to define psychopathology lies in the relativity of social norms, which vary across cultures and change over time, making this criterion culturally specific and potentially discriminatory.
Step-by-step explanation:
One limitation of deviation from social norms as a definition of psychopathology is that social norms vary greatly across cultures and over time, making it a relative and sometimes unstable criterion for defining psychopathology. What may be considered deviant behavior in one society might be deemed perfectly normal in another, and behaviors once considered deviant can become accepted as norms change. As norms are culturally specific, using deviation from them to define psychopathology can result in labeling behaviors that are culturally appropriate within a given society as pathological, potentially leading to discrimination and misunderstanding.