1. direct correlation-a correlation in which large values of one variable are associated with large values of the other and small with small; the correlation coefficient is between 0 and +1.
The Causes of Alcoholism. 1  Gender: Gender can play a role. Men are more likely to develop alcoholism (this is not to say, however, that there are not alcoholic women, there are). 2  Frequency: As mentioned above another cause of alcohol addiction can be drinking regularly AND above moderate drinking guidelines.
2.6 million people with addictions have a dependence on both alcohol and illicit drugs. 9.4 million people in 2011 reported driving under the influence of illicit drugs. 6.8 million people with an addiction have a mental illness.