A positive role model for drug abuse would be a person who I assume, is against drugs. A negative role model (someone who you look up to for a bad reason such as doing drugs) would be someone who supports doing drugs. Perhaps the person who is a positive role model is spreading messages to people about the negative side affects and how harmful it is to your body while the negative role model is spouting out how good it makes them feel. Characteristics of the positive role model would be resourceful and informing; characteristics of the negative role model would be careless and unquestioning, even unforgiving.