The history of addiction goes back centuries, and unfortunately, there is still a long way to go for people to realize the effects of chemical substances do more harm than good. The difference between drug use and abuse relies heavily on a person’s dependence on the substance. The line between the differences is often very fine. Depending on other factors involved, such as morals, values, environment, and genetic predisposition, the line will most likely be crossed without regard to the consequences until treatment and recovery are the only options left. This is essay compares two theoretical explanations for addiction, including a psychological theory, and a biological theory. In addition, the writer will describe the viewpoints of each model, and how their effectiveness in addiction prevention and intervention.…