“…In light of the analysis of police activity data, the author believes that the thesis that drug users are more often delinquents would be confirmed. Cohen et al (1999) seek to be more specific by surveying the relationship between delinquency and drug use, to examine the more direct effects of drug use in the vicinity of the time of the commission of the offence. The analyses covered arrests relating to offences against the person (murder, homicide, rape, aggravated and simple assault), acquisitive offences (robbery with violence and burglary), theft and property offences (vehicle theft, fraud, concealment), drug offences (possession, production, trafficking) and public order offences (prostitution, gambling, nuisance) as well as the results of heroin screening tests, cocaine and phencyclidine (PCP).…”