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31.
Early intervention is a popular idea for helping people with schizophrenia. There are two major approaches: intervening when the first symptoms of psychosis are expressed during adolescence and treating individuals at high risk during adolescence before psychotic symptoms become apparent. The risks and benefits of each approach are discussed. 相似文献
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Parenting Style and Adolescent Externalizing Behaviors: The Moderating Role of Respiratory Sinus Arrhythmia 下载免费PDF全文
This longitudinal study was conducted with 262 adolescents (M age = 15.3) and their parents to examine adolescent respiratory sinus arrhythmia (RSA; baseline and reactivity) as a moderator of the relationship between parenting style and adolescent externalizing behaviors. This was conceptualized within the differential susceptibility to the environment framework, which proposes that children with greater sensitivity to environmental influences benefit more from supportive environments but are at greater risk in averse environments. In this study, low RSA baseline was associated with greater susceptibility. In confirmation of hypotheses, males with low RSA baseline had the most externalizing behaviors when mother or father authoritative parenting was low or when mother authoritarian parenting was high. Contrary to hypotheses, females with greater RSA reactivity (high susceptibility) did more poorly when authoritarian parenting was low or authoritative parenting was high. Differential gender socialization and the task used to elicit RSA reactivity are suggested reasons for gender differences. 相似文献
33.
The incorporation of prior information about θ, where θ is the success probability in a binomial sampling model, is an essential feature of Bayesian statistics. Methodology based on information-theoretic concepts is introduced which (a) quantifies the amount of information provided by the sample data relative to that provided by the prior distribution and (b) allows for a ranking of prior distributions with respect to conservativeness, where conservatism refers to restraint of extraneous information about θ which is embedded in any prior distribution. In effect, the most conservative prior distribution from a specified class (each member o f which carries the available prior information about θ) is that prior distribution within the class over which the likelihood function has the greatest average domination. The most conservative prior distributions from five different families of prior distributions over the interval (0,1) including the beta distribution are determined and compared for three situations: (1) no prior estimate of θ is available, (2) a prior point estimate or θ is available, and (3) a prior interval estimate of θ is available. The results of the comparisons not only advocate the use of the beta prior distribution in binomial sampling but also indicate which particular one to use in the three aforementioned situations. 相似文献
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Blessed is he who expects nothing, for he shall never be disappointed—Benjamin FranklinBased on our risk-value framework, this paper presents extensions for the disappointment models that were originally proposed by Bell (1985) and Loomes and Sugden (1986). We provide explicit functional forms for modeling the effect of disappointment on risky choice behavior that generalizes Bell's work and lends tractability to the efforts of Loomes and Sugden. Our generalized disappointment models can explain a number of decision paradoxes, and offer additional insights into nonexpected utility preferences based on the intuitive notions of disappointment and risk-value tradeoffs. 相似文献
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Judy Dyer 《Journal of Sociolinguistics》2002,6(1):99-116
In this paper the formation of a new dialect in Corby, Northamptonshire, a former steel town in the English Midlands, is traced across three generations. The study focuses on whether dialect levelling processes can account for the features of the new dialect formed by contact between the displaced Scottish and indigenous English inhabitants in the town. The results of a variationist analysis of the reflexes of two phonological variables are interpreted within a language ideology framework, with reference to commentary from the speakers themselves. Such a combination of perspectives offers a means of socially embedding the interpretation of the data with reference to the identity issues arising from this contact situation. 相似文献
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Jessica L. Lee MD MS Jason Burnett PhD Carmel B. Dyer MD 《Journal of elder abuse & neglect》2013,25(3):152-162
ABSTRACTSelf-neglect (SN) and frailty in older adults is associated with increased disability and mortality. Despite these commonalities, there have been no studies objectively assessing frailty in older adults who SN. This secondary analysis classified frailty in N = 37 older adults with Adult Protective Services validated SN using the Fried Frailty Phenotype (FFP) of weight loss, weakness, exhaustion, activity level, and walking speed. Overall, 3% were classified as robust, 62% as prefrail, and 35% as frail. Most (72%) were overweight/obese, with clinically significant decreases in activity level (60%) and walking speed (97%). Compared to the original FFP population, older adults who SN exhibit important differences in frailty phenotypes, and finding that the largest percentage of older adults who SN were prefrail may indicate a critical opportunity for intervening in this population to reduce future functional decline and mortality. 相似文献
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During the 1990s, 23 states implemented family cap policies as a means to reduce the incidence of out-of-wedlock births among welfare recipients. Using Current Population Survey data from 1989 to 1999, we examine the impact of family cap policies on the birth rates of single, less-educated women with children. We use the first five states that were granted waivers from the Department of Health and Human Services to implement family caps as natural experiments. Specifically, we compare trends in out-of-wedlock birth rates in Arkansas, Georgia, Indiana, New Jersey and Virginia to trends in states that did not implement family caps or any other waivers prior to the Personal Responsibility and Work Opportunity Reconciliation Act. We employ several techniques to increase the credibility of results from our natural experiment, such as the inclusion of multiple comparison groups, controls for differential time trends, and difference-in-difference-in-differences estimators. Our regression estimates generally do not provide evidence that family cap policies reduce the incidence of out-of-wedlock births among single, less-educated women with children. 相似文献