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The stepping-stone theory of progression into drug use is examined, based on the alcohol and other drug use of over 27,000 seventh-through eighth-grade students in New York State. The data show that students do not use illicit drugs unless they also use alcohol. White, black and Hispanic students all tend to initiate the use of drugs in the following order-alcohol, marijuana, pills, and hard drugs. Among blacks and Hispanics, pills are not as important a transition between marijuana and hard drugs as they are among whites. Cigarettes form an important step between alcohol and marijuana use for younger students, particularly for females. Since alcohol serves as the gateway to all other drug use, prevention approaches that control and limit alcohol use among adolescents may be warranted.He received his Ph. D. in Psychology for the State University of New York at Buffalo in 1976. His research interests are the social and psychological correlates of drinking.She received her Ph.D. in Sociology from the State University of New York at Buffalo in 1983. 相似文献
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Gas chromatography-mass spectrometry was used to compare gasoline samples obtained from different sources based on the difference in amounts of certain components found in the headspace of gasoline using target response data. Many suspected arson cases involve comparing an ignitable liquid extracted from fire debris to a liquid found in a suspect's possession to determine if they could have had a common source. Various component ratios are proposed for determining if an unevaporated gasoline sample could have originated from the same source as an evaporated gasoline extracted from fire debris. Fifty and 75% evaporated gasoline samples were both found to contain similar ratios of certain components when compared with its unevaporated source gasoline. The results of the comparisons in this study demonstrate that for cases involving gasoline that has been evaporated up to 50% and extracted from pine, it is possible to eliminate comparison samples as originating from the same source. The results of the 75% comparisons suggest it may be possible to apply the same type of comparison to cases involving 75% evaporated gasoline. 相似文献
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It has been estimated that deregulation of US S&Ls will cost the US taxpayer £500bn in terms of the compensation paid out
for the resulting scandals and failures. In contrast, the deregulation of UK building societies, although initially followed
by a series of scandals and losses of £1bn., eventually resulted in substantially increased profitability. The social effects
in the UK have been quite different to those in the US. As a result of the increased importance placed on profitability as
opposed to mutuality, many homeowners have had their properties repossessed, and investors been mis-soId unsuitable investments.
However, UK building societies, by a mixture of good luck and judgement, have avoided the principal regulatory pitfalls, which
beset the S&Ls in terms of bankruptcies and fraud. This paper seeks to explain these different post-deregulation experiences.
It extends to the UK the looting model of Akerlof and Romer (1993) and the managerial diversion model of Nichols (1972) which
went so far to explain and anticipate, respectively, the US experience.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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Political Behavior - Much of the gender gap literature focuses on women’s greater average liberalism relative to men. This approach masks considerable heterogeneity in political identity and... 相似文献