A Population-Based Twin Study of Alcoholism in Women

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Describe the purpose and at least four major points of the article. The purpose of the article was to see whether or not alcoholism in women is genetic-based. Researchers were interested in seeing the extent to which alcoholism in females may be environmentally or genetically induced. Only one study, and that different to this, has been produced on the matter. Psychiatric structured interviews were held on a sample of 1030 female-female pairs extracted from the famous population-based Virginia Twin Registry. All were zygotic (i.e. Identical), and the interviews were conducted by researchers who were blinded to the status of the twin. Criteria of alcoholism were taken from the DSM (III). These were: (a) alcoholism with tolerance or dependence, (b) alcoholism with/ without tolerance or dependence and (c) alcoholism with/ without tolerance or dependence or problem drinking. Researchers found that propensity for alcoholism was far greater in monozygotic (i.e. fraternal) than in dizygotic (i.e. identical twins), with the heritability of alcoholism in women being as high as 50% to 60%. Researchers, therefore, concluded that genetic factors seem to play a significant role in the etiology of alcoholism in females. 2. Discuss the generalizability and validity of the study. For example, will findings of this study generalize to other people and/or situations, can we generalize from the study participants to the general population, and do the methods employed have validity?

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