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91.
Bonnie Yegidis Lewis 《Journal of family violence》1987,2(1):1-10
This paper reports the results of a comparative study of wife abuse. Factors that distinguished 94 physically abused women from a comparison group of 110 women were sought. The groups were matched on number of years married or cohabiting and socioeconomic status. Evidence was found that further supports a learning theory explanation of wife abuse. The study also found that wife abuse is no more likely to be displayed by blacks than by whites when the variable of social class is controlled. 相似文献
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Terence P. Thornberry Beth Bjerregaard William Miles 《Journal of Quantitative Criminology》1993,9(2):127-158
Subject attrition is a potentially serious threat to the validity of inferences drawn from panel studies of delinquency and drug use. Prior assessments of this issue produce somewhat conflicting results, with some finding that respondents who leave the panel have higher rates of delinquency and drug use than those who remain, while other studies report little or no differential attrition. Despite these findings, there has been virtually no examination of the extent to which respondent attrition can bias substantive findings in panel studies of delinquency and drug use. The present article addresses this issue by simulating higher levels of attrition in an ongoing panel study that has a low rate of attrition and little differential attrition. It finds that failure to include more elusive respondents (those who are more mobile) would bias estimates of prevalence and frequency of delinquency and drug use as well as results from basic regression analyses. Failure to include less cooperative respondents (those who require more contacts) produces similar, but somewhat smaller, differences. The methodological implications of the results are discussed. 相似文献
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In 1982, the Congress authorized $11 billion to modernize the nation's air traffic control system—one of the largest infrastructure investments since the building of the interstate highway system. Although this investment appears to offer a large and robust return, the economic results depend strongly on productivity gains through system consolidation. It is uncertain what balance the Congress will strike between the long-term, widely shared benefits of greater productivity and the immediate job losses from system consolidation. This risk can be included in the calculus of expected return through Monte Carlo analysis. When this is done, the expected return drops very close to the 10% hurdle rate that the government often uses for such projects. This method of integrating political risk can be applied to any investment, public or private, for which political action joins the customary economic and technical uncertainties in affecting the outcome. 相似文献
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