Write a 700- to 1,050-word analysis on theories related to the etiology of substance abuse and addiction. Include the following:
- Describe the biological influences related to substance abuse.
- Analyze the psychological and emotional variables that influence addiction.
- Analyze the role of factors related to ethnicity, gender, and socioeconomic status in the development of addiction.
- Examine how the etiological theories and issues related to substance abuse and addiction have changed over time.
- Describe how these theories differ between substance-related and process addictions.