Intraval is one of the leading research bureaus in the area of addiction and the associated nuisance and criminality. Addiction is certainly not restricted to soft and hard drugs. Addiction to gambling, for example, is increasingly recognized as a problem. Alcohol and new amphetamine substances have recently been the subjects of important research.
Intraval has conducted a large amount of research in this area, varying from literature research on alcohol and violence to extensive research on the different types of drug users. Central questions in this research concern the nature and extent of drug use, the effects of the substances, the relation between drug use and nuisance and violence, and the provision of care facilities to drug users.