Concepts and classes of drugs
Concepts of drug, drug use, misuse, and abuse
Further classifications relevant to substance abuse and dependence
Types of drugs, history of drug use and misuse, and costs of drug misuse
Current multivariable models
Neurobiologically-relevant
Social interaction and social groups
The large social and physical environment
Neurobiologically relevant
Social interaction and social groups
The large social and physical environment
Neurobiologically-relevant
Social interaction and social groups
The large social and physical environment
Conclusions, and recent and future directions.
