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101.
Patricia Cohen 《Evaluation and program planning》1982,5(3):247-253
The various costs of Type I and Type II errors of inference from data are discussed. Unfortunately, other things equal, Types I and II errors are inversely related. Six methods of minimizing Type I error in studies are presented, each of which may be employed even after data are collected. Type II errors may also be minimized by a combination of study design and analytic means. Although some of these techniques must be built into the study others can be undertaken when beginning work on a data set. Only one of these techniques will increase Type I error, and those involving data reduction may decrease both types of error. 相似文献
102.
Personal, health, academic, and environmental predictors of stress for residence hall students 总被引:4,自引:0,他引:4
Dusselier L Dunn B Wang Y Shelley MC Whalen DF 《Journal of American college health : J of ACH》2005,54(1):15-24
The authors studied contributors to stress among undergraduate residence hall students at a midwestern, land grant university using a 76-item survey consisting of personal, health, academic, and environmental questions and 1 qualitative question asking what thing stressed them the most. Of 964 students selected at random, 462 (48%) responded to the survey. The authors weighted data to reflect the overall university-wide undergraduate population (55% men, 12% minority or international, and 25% freshmen). Women and US citizens experienced greater stress than did men and non-US citizens, respectively. Frequency of experiencing chronic illness, depression, anxiety disorder, seasonal affective disorder, mononucleosis, and sleep difficulties were significant stress predictors. Although alcohol use was a positive predictor, drug use was a negative predictor of stress. Both a conflict and a satisfactory relationship with a roommate, as well as a conflict with a faculty or staff member, were also significant predictors of stress. 相似文献
103.
Jere Cohen 《Social Networks》1980,2(1):65-74
Whereas Hollingshead's 1942 study of Elmtown High found socio-economic status homophily to be a prime criterion in students' friendship and dating choices, the present study, a secondary analysis of James Coleman's 1958 Elmtown data, finds socio-economic status homophily unimportant for friendship and dating choices. This decline in status homophily occurred at a time when class distinctions were becoming blurred in Elmtown and the “rating-and-dating” system was losing in national importance. Status homophily is not a constant, but a variable: clear class distinctions facilitate status homophily, while shifting class and occupational systems make for class-heterogeneous social networks. 相似文献
104.
Suleiman I. Cohen 《Journal of Policy Modeling》1981,3(1):37-59
This article appraises within an interdisciplinary framework key social, political, and economic aspects of the distribution of power in agrarian societies, and their interaction with various agrarian reform measures. Reform measures investigated include land reform proper, tenancy and wage regulations, land taxes, institutional credit, and productivity promotion measures.Use is made of alternate models that simulate economic development and agrarian reform under alternative sociopolitical regimes. The models distinguish four actor-groups: landlords, peasants, nonagriculturalists, and the state. Regimes differ, on the one hand, according to which actor-group is in power, and, on the other hand, according to which instruments of economic policy the state employs. The models are empirically applied and used to analyze the impact of agrarian reform measures in the 1960s and 1970s in two different regimes, India and Chile (under Allende). 相似文献
105.
106.
The purpose of this study was to determine the knowledge, experiences, and values that therapists should possess to provide quality therapy services to lesbian, gay, and bisexual (LGB) persons and their families. Using the Delphi method, consensus from a panel of experts on LGB topics was obtained on the components that training curricula should ideally include to prepare therapists adequately to work with this population. Panelists provide suggestions for important therapist values and qualities, key theoretical orientations, common issues of LGB clients and their support persons, key components of assessment and interventions, ethical and legal issues, and recommended materials. The panelists stress self-of-the-therapist work and development of a systemic perspective as critical aspects of training. The role of sexuality was deemphasized. Recommendations to training programs based on these findings are provided. 相似文献
107.
Concerns have been raised regarding the appropriateness of asking about violence victimization in telephone interviews and whether asking such questions increases respondents' distress or risk for harm. However, no large-scale studies have evaluated the impact of asking such questions during a telephone interview. This study explored respondents' reactions to questions regarding violence in two large recently completed telephone surveys. After respondents were asked about violence, they were asked if they thought surveys should ask such questions and whether they felt upset or afraid because of the questions. In both surveys, the majority of respondents (regardless of their victimization history) were willing to answer questions about violence and were not upset or afraid because of the questions. More than 92% of respondents thought such questions should be asked. These results challenge commonly held beliefs and assumptions and provide some assurance to those concerned with the ethical collection of data on violent victimization. 相似文献
108.
Cohen CA 《Journal of gerontological social work》2006,46(3-4):137-144
Financial abuse is the most common type of elder abuse. Consumer fraud, a form of financial abuse perpetrated by criminals who do not know the victim, is not well studied. Seniors represent a disproportionate percentage of the victims of consumer fraud. This article reviews the data on the prevalence of consumer fraud (primarily telemarketing scams) in Canada. It examines the reasons why Canadian seniors are targets of fraud. It also describes many unique initiatives developed at the local, provincial and national level in Canada to educate seniors and those who care for them about the types of scams and the risks of fraud. 相似文献
109.
Steven B. Cohen 《The American statistician》2013,67(4):337-341
The National Medical Care Expenditure Survey, which has a complex survey design, is further complicated by combining two independently drawn national samples of households from the Research Triangle Institute (RTI) and the National Opinion Research Center (NORC). It is assumed that since the structures of these national-area samples are similar, they are thereby compatible and allow for the derivation of statistically equivalent unbiased national estimates of relevant health parameters. In this paper, national parameter estimates of relevant demographic and health measures were separately produced for each of the two survey organizations and a determination was made regarding statistical equivalence across samples. In addition, the data-collection organization effect was estimated and tested within the framework of a multivariate analysis appropriate for complex survey data. The findings consistently revealed a statistically nonsignificant data-collection organization effect when testing for differences in domain estimates of the relevant health parameters under consideration. 相似文献
110.
Shelley Myer 《Serials Review》2013,39(2):162-163
AbstractThis article will discuss a joint effort to develop a single standard for the exchange of license information between publishers and libraries. 相似文献