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401.
This study, involving 139 employees from a variety of industries, organizations, and positions in Singapore, measured the effects of mood on the intentions of employees to contribute actions that are organizationally desirable but are not part of their formal job requirements (organizational citizenship behavior). After effects of established patterns of historical organizational citizenship behavior, demographic characteristics, and employee positive and negative affectivity had been controlled, stepwise regression analysis revealed that the amount of positive affect currently experienced by an employee significantly influenced the employee's intention to perform specific acts of organizational citizenship.  相似文献   
402.
Reliability and external validity are two fundamental values that pose incompatible constraints on neurobiological experiments. The more reliability an experimental result achieves, the less external validity it earns, and vice versa. In this article, I propose an externalist interpretation of external validity: the external validity of an experimental result depends not only on how much complexity is built into an experimental design, but also on the relationship between the experimental result and other related experiments. This externalist interpretation, which explains how a neurobiological experiment can be reliable and externally valid simultaneously, suggests a new way to understand the epistemology of neurobiological experimentation.  相似文献   
403.
Objective: To determine the usefulness of Q methodology to locate and describe shared subjective influences on clinical decision making among participant physicians using hypothetical cases containing common ethical issues.

Design: Qualitative study using by-person factor analysis of subjective Q sort data matrix.

Setting: University medical center.

Participants: Convenience sample of internal medicine attending physicians and house staff (n = 35) at one midwestern academic health sciences center.

Interventions: Presented with four hypothetical cases involving urgent decision making near the end of life, participants selected one of three specific clinical actions offered for each case. Immediately afterward and while considering their decision, each respondent sorted twenty-five subjective self-referent items in terms of the influence of each statement on their decision-making process. By-person factor analysis, where participants are defined as variates, yielded information about the attitudinal background the physicians brought to their consideration of each hypothetical case. We performed a second-order factor analysis on all of the subjective viewpoints to determine if a smaller core of shared attitudes existed across some or all of the four case vignettes. Factor scores for each item and post-sort comments from interviews conducted individually with each respondent guided the interpretation of ethical perspective used by these respondents in making clinical decisions about the cases.

Measurements and Main Results: Second-order factor analysis on seventeen viewpoints used by physicians in the four hypothetical urgent decision cases revealed three moderately correlated (r 2 < 40%) subjective core attitudinal guides used broadly among all the cases and among sixteen of the seventeen original factors. Across all the cases, our participants were guided in general by: (1) patient-focused beneficence, (2) a patient- and surrogate-focused perspective that includes risk avoidance, and (3) best interest of the patient guided by ethical values. Economic impact on the physician, expediency in resolution of the situation, and the expense of medical treatment were not found to be influential determinants in this study.

Conclusions: Q sorting and by-person factor analysis are useful qualitative methodological tools to study the complex structure of subjective attitudes that influence physicians in making medical decisions. This study revealed the subjective viewpoints used by our physician participants as they made ethically challenging treatment decisions. The three second-order factors identified here are grounded in current bioethical values as well as the personal traits of physicians. The participants' decision methods appear to resemble casuistry more than principle-based decision making. Generalizability of results will require further studies.  相似文献   
404.
405.
In this article, we review past studies comparing randomized experiments to regression discontinuity designs, mostly finding similar results, but with significant exceptions. The latter might be due to potential confounds of study characteristics with assignment method or with failure to estimate the same parameter over methods. In this study, we correct the problems by randomly assigning 588 participants to be in a randomized experiment or a regression discontinuity design in which they are otherwise treated identically, comparing results estimating both the same and different parameters. Analysis includes parametric, semiparametric, and nonparametric methods of modeling nonlinearities. Results suggest that estimates from regression discontinuity designs approximate the results of randomized experiments reasonably well but also raise the issue of what constitutes agreement between the 2 estimates.  相似文献   
406.
This article describes Let's Talk, a counseling center outreach program. Counselors hold walk‐in hours across campus to engage students who might not otherwise seek counseling. Locations are chosen to reach underserved communities. Counselors offer informal consultation, a less formal alternative to traditional counseling. Este artículo describe Let's Talk (Hablemos), un programa de acercamiento a los centros de consejería. Los consejeros mantienen horas de puertas abiertas sin cita previa en distintos lugares del campus para atraer a estudiantes que de otra forma no buscarían acceso a la consejería. Las ubicaciones se eligen para alcanzar comunidades con servicios insuficientes. Los consejeros ofrecen consultas informales, una alternativa menos formal a la consejería tradicional.  相似文献   
407.
The impact of context reinstatement (CR) on eyewitness recall and identification was explored in this study. Participants viewed a video of a staged theft and, following a 1‐week interval, were asked to identify the culprit and recall the event in either the same or in a different physical environment. Results suggested that CR enhanced the perceived familiarity of the lineup members, which in turn increased participants' willingness to identify someone in the lineup. Although CR significantly improved facial discrimination and identification accuracy when the target was present, it also increased confidence ratings beyond that warranted by the increase in accuracy. In terms of recall, reinstating the study context improved participants' free recall of both central and peripheral details and cued recall of peripheral details. The results were consistent with a (mis)attribution of familiarity and the outshining hypothesis. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
408.
The Child Behaviour Checklist (CBCL) and Youth Self‐Report (YSR) are widely used measures of internalising and externalising problems in children and adolescents, but cross‐cultural differences in these problems have not been examined in Australian children of Chinese and Anglo‐Celtic ancestry. Fifty‐nine Chinese (27 boys and 32 girls) and 65 Anglo‐Celtic Australian (35 boys and 30 girls) children aged 10–13 years completed the YSR, and one of their parents completed the CBCL. Cross‐informant agreement between these two measures was also examined. No differences were found between the Chinese and Anglo‐Celtic groups on parents' and children's ratings on any syndrome or overall scales. The overall level of agreement between YSR and CBCL scores was poor in the Anglo‐Celtic group (intraclass correlation coefficient for total problems = 0.33), but there was no agreement between these scores in the Chinese group. Results highlight the need to obtain multiple sources of information in assessments of mental health problems in children from different cultural backgrounds.  相似文献   
409.
Since 2009, the Clinical Research Unit for Anxiety and Depression (CRUfAD) has been providing primary care clinicians with internet cognitive behaviour therapy (iCBT) courses to prescribe to patients. Although these courses have demonstrated efficacy in research trials, adherence in primary care is less than half that of the research trials. The present studies pose three questions: first, do course non-completers drop out because of lack of efficacy? Second, can changes in delivery (e.g. adding choice, reminders and financial cost) improve adherence? Last, does clinician contact improve adherence? The results showed that non-completers derive benefit before dropping out; that adding reminders, choice of course and timing, and financial cost can significantly improve adherence; and that clinician contact during the course is associated with increased adherence. It is concluded that improved adherence is an important determinant of effectiveness.  相似文献   
410.
This study examined gender differences in student engagement and academic performance in school. Participants included 3420 students (7th, 8th, and 9th graders) from Austria, Canada, China, Cyprus, Estonia, Greece, Malta, Portugal, Romania, South Korea, the United Kingdom, and the United States. The results indicated that, compared to boys, girls reported higher levels of engagement in school and were rated higher by their teachers in academic performance. Student engagement accounted for gender differences in academic performance, but gender did not moderate the associations among student engagement, academic performance, or contextual supports. Analysis of multiple-group structural equation modeling revealed that perceptions of teacher support and parent support, but not peer support, were related indirectly to academic performance through student engagement. This partial mediation model was invariant across gender. The findings from this study enhance the understanding about the contextual and personal factors associated with girls' and boys' academic performance around the world.  相似文献   
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