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31.
Monozygotic twins reared in different countries are rare. Data from several available cases have been combined in group findings, masking cultural effects on behavior. The present study compared behavioral and health-related findings for unusual monozygotic female twins raised apart in South Korea and the United States. The 37-year-old twins were exceptional in being reared under dramatically different circumstances with limited telephone and Internet contact. Primary outcome measures included life history events, physical and health-related characteristics, and diverse behavioral traits. Striking similarities and differences were noted. Findings are discussed with reference to genetic and cultural influences on health and behavior. 相似文献
32.
Janne D. Graham 《The Australian journal of social issues》1974,9(2):133-141
Reported membership of voluntary organizations is taken as an index of community participation. Data derived from a Mental Health Survey in Canberra in 1971 are analysed and participation behaviour compared with information from American participation studies. A high participation rate was expected because of Canberra's high ranking on socio-economic variables compared with Australia as a whole. However, nearly half of the adults sampled report belonging to no formal organizations. Sex, age and socio-economic status are found to be related to joining behaviour and conform to well-established findings in the United States. 相似文献
33.
Can ranking techniques elicit robust values? 总被引:1,自引:0,他引:1
This paper reports two experiments which examine the use of ranking methods to elicit ‘certainty equivalent’ values. It investigates
whether such methods are able to eliminate the disparities between choice and value which constitute the ‘preference reversal
phenomenon’ and which thereby pose serious problems for both theory and policy application. The results show that ranking
methods are vulnerable to distorting effects of their own, but that when such effects are controlled for, the preference reversal
phenomenon, previously so strong and striking, is very considerably attenuated.
相似文献
Graham LoomesEmail: |
34.
Graham Loomes 《Journal of Risk and Uncertainty》1991,4(1):91-108
During the past 40 years there has been an accumulation of experimental evidence suggesting that most of the axioms of expected utility theory are liable to be systematically violated by substantial numbers of individuals. Much of this evidence has focused on failures of the independence axiom and has stimulated a number of alternative models that try to explain that evidence in various ways. This article presents a fresh experiment that looks at a different kind of violation—one that does not appear to be easily accommodated by several of the more prominent alternative models as they are currently formulated.The experimental work reported in this article was funded by Economic and Social Research Council Award No. B 00 23 2163. 相似文献
35.
The technological approach to risk regulation seeks to lessen the incidence of mortality and morbidity by modifying environmental conditions. Insofar as risk-taking behavior is purposive, social scientists have predicted that technological progress may be negated by various forms of risk compensation. The validity of this hypothesis is tested in the transportation sector with data from the U.S. on the effects of new mandatory safety-belt-use laws. A fixed-effects model of traffic fatality counts is estimated using pooled data from 50 states during the 1975–1987 period. Results suggest that such laws have reduced mortality among car occupants to a degree that is compatible with the predictions of technologists. However, there is weak evidence of increased mortality among some nonoccupants, a pattern predicted by risk-compensation theorists. The lifesaving effects of belt-use laws are largest in states that permit primary police enforcement and appear to be somewhat larger for front-seat occupants age 21 and under. Although offsetting behavior appears to be small relative to lifesaving effects, it may take several more years for any compensatory behavior to achieve a new equilibrium.This research was supported in part by a grant from the Centers for Disease Control to the New England Injury Prevention Research Center. 相似文献
36.
Edward Susko Michael J. Bronskill Simon J. Graham Robert J. Tibshirani 《Revue canadienne de statistique》2001,29(3):379-394
Magnetic resonance imaging techniques can be used to measure some biophysical properties of tissue. In this context, the T2 relaxation time is an important parameter for soft‐tissue contrast. The authors develop a new technique to estimate the integral of the distribution of T2 relaxation time without imposing any constraint other than the monotonicity of the underlying cumulative relaxation time distribution. They explore the properties of the estimation and its applications for the analysis of breast tissue data. As they show, an extension of linear discriminant analysis is found to distinguish well between two classes of breast tissue. 相似文献
37.
Blood vengeance is a culturally specific phenomenon that can place Bedouin-Arab children at high risk of neglect. This case study examines the psychological and social implications of vengeance on children, the children's coping strategies, and the role of social work. The social work function includes nonauthoritarianism, strategies for forming a positive helping alliance, and various forms of culturally sensitive assessment and intervention. The study therefore yields insight into bridging the emic-etic gap in conceptualizing and responding to child neglect in a non-Western society. 相似文献
38.
39.
Graham C. Ousey 《Sociological inquiry》2000,70(4):391-419
Recent research in urban sociology posits that the proliferation of female-headed families in American cities is a result of declining economic prospects due to profound changes in the structure of the urban economy. Meanwhile, macro-level theory and research in criminology suggest that an association exists between family structure and rates of lethal violence among juveniles. Given these two streams of sociological thought, there is good reason to expect that increases in juvenile homicide rates since 1970 may be due, in part, to changes in the structure of the economy and the family during the 1970 to 1990 period. However, the nexus between deindustrialization, female-headed families, and juvenile homicide has received little attention in extant research. The objective of the current study is to remedy this gap in the literature by bringing together ideas about deindustrialization and female headship in an attempt to explain city-level changes in Black and White juvenile homicide rates between 1970 and 1990. In particular, the research investigates the hypothesis that a decline in the manufacturing base of cities increased rates of female headship and thereby indirectly raised homicide rates. Race differences in the hypothesized structural relationships also are examined. 相似文献
40.