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The present research was designed to (1) replicate prevalence estimates of clinical levels of conduct problems in a large (n = 401) sample of children residing at a shelter for battered women, and (2) assess the stability of mothers' reports of child conduct problems following shelter departure. According to mothers' reports on standardized questionnaires and diagnostic interviews obtained during shelter residence, approximately one third of the children between 4 and 10 years of age exhibited clinical levels of conduct problems. Prior research has demonstrated elevated maternal distress during shelter residence and suggests that such distress may influence mothers' reports of child conduct problems. To examine this issue, a subset of families with children exhibiting clinical levels of conduct problems (n = 68) was reassessed following their shelter departure. Mothers' reports of child conduct problems remained stable despite significant reductions in mothers' distress after shelter exit.  相似文献   
773.
Seven ethyl homologues of known tropane esters have recently been detected as impurities in the gas chromatographic signature profiles of authentic Peruvian illicit cocaine base and hydrochloride exhibits. Peruvian cocaine base processors are now known to use ethanol for the purification of crude cocaine base. This process is referred to as the "base lavada" or "washed base" process and is a recent substitute method for the potassium permanganate oxidation purification methodology. Seven ethyl ester homologues were formed in illicit cocaine from the transesterification of known tropane methyl esters or possibly ethyl esterification of their respective tropane C-2 carboxylic acids in the presence of ethanol. Exhibits containing these compounds were subjected to gas chromatographic-mass spectrometric analyses to determine their identity and were subsequently synthesized to verify their structures. Quantitative determinations were obtained from ion-pair chromatography isolation followed by gas chromatography with flame ionization detection. Specifically, hexanoylecgonine ethyl ester, cocaethylene, cis-cinnamoylecgonine ethyl ester, trans-cinnamoylecgonine ethyl ester, 3',4',5'-trimethoxybenzoylecgonine ethyl ester, cis-3',4',5'-trimethoxycinnamoylecgonine ethyl ester, and trans-3',4',5'-trimethoxycinnamoylecgonine ethyl ester were detected and characterized. When present, these compounds were detected at levels ranging from 8.6 x 10(-4) to 9.3 x 10(-1)% relative to cocaine.  相似文献   
774.
This paper explores the reasoning underlying Milton Friedman's preference for a small, unbalanced budget over a large, balanced one. Because the marginal return from government spending is less than the marginal cost (measured in terms of the amount of income private individuals remain free to spend), government expenditures have more of an adverse impact on the economy in his view than does the method of financing that spending. Using a panel data set comprising the 50 states plus the District of Columbia, we report evidence from the years 1967 through 1992 that growth rates in income per capita tend to be higher in states with smaller public sectors. Moreover, we find that while both deficits and taxes reduce the rate of income growth in a state, the negative impact of government spending is considerably larger at the margin.  相似文献   
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Some investigators argue that recent reforms in Congress have made it more difficult for Congress to do its job, while others contend that growing complexity in the larger congressional environment has had this result. We test these competing explanations using selected measures of congressional committee inputs and outputs over a period of eight Congresses, 1961–1975. Analysis based on pooled time-series and cross-section data reveals that reform had no direct impact on our measures of committee inputs and outputs once the effects of underlying trends attributable to complexity in the external environment are controlled. Similar conclusions emerge when we compare committees in complex and noncomplex environments and also when we compare committees differentially affected by reform. We discuss methodological and policy implications of our findings.  相似文献   
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This article investigates the public reaction to the scandal which effectively ended Gary Hart's quest for the 1988 Democratic presidential nomination. Employing NES panel data covering the period in which the scandal surfaced, and integrating arguments drawn from research on attitude change, media priming, and candidate evaluation, this analysis of the Hart case illuminates more general questions about how citizens respond to media communications during the course of an election campaign and of the factors that facilitate or inhibit attitude change. The investigation lends support to contemporary theories of attitude change that emphasize citizens' levels of political involvement and prior predispositions; uncovers evidence of media priming as views about controversial standards of morality were newly engaged in defining citizens' post-scandal evaluations of Hart; and yields evidence that negative responses to Hart in the wake of the scandal were tempered among citizens who typically weigh policy criteria alongisde candidate characteristics when formulating their overall candidate evaluations.  相似文献   
780.
A property crime victimization survey was conducted of households in both high and tow crime neighborhoods in one southern city. A response rate of 68.5% was obtained. The study tested the premises of both the routine activities and social disorganization theories as they contribute to the likelihood of property crime victimization at the individual level. It was found that routine activities theory explained 28% of the property crime variance in the socially disorganized area (high crime) while only explaining 11% of the same variance in the low crime area. Separate measurements were used to establish the level of social disorganization in the two geographical areas. The beta coefficients reveal that in the high crime area, those most likely to be property crime victims are white, single homeowners who are not at home from 6 p.m. to 11 p.m., who have relatives living in their neighborhoods, and who interact with their neighbors. These findings lend marginal support to the routine activities model.  相似文献   
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