Factors that Influence Drug Addiction Before we can even start analyzing the different factors that influence addiction, we need to have a working definition of this psychological disease. Addiction is said to be an involuntary need to use drugs, and the inability to stop or curb the usage regardless of the severe consequences that plague addict’s lives. The process, by which an individual becomes addicted to drugs and/or alcohol, is an intricate combination of biological and psychological factors. Although it has been argued that people can become addicted to various substances immediately, such as crack cocaine, it is commonl