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31.
Hazard perception is one of the few quantifiable components of driving competency that can explain the high crash risk of novice drivers (see Horswill & McKenna, 2004). Some studies focused on investigating the stimulus part of hazard perception items by comparing several design features of the displayed traffic scenarios (e.g. Malone et al., 2012; Scialfa et al., 2013). Other empirical studies have been conducted to address the reaction part of hazard perception items (e.g. Vlakveld, 2014). Among others, existing hazard perception tests differ with respect to the ecological validity – the similarity to real-world demands – of the task that has to be completed by the participants (simple reaction, hazard localization, simulated driving, etc.). Based on the findings of general expertise research (see Glaser & Chi, 1988), the hypothesis of the present experiment was that an increased ecological validity of a hazard perception task has a positive effect on the magnitude of performance differences between more and less experienced drivers. 104 learner drivers and 51 experienced drivers were randomly assigned either to a less ecological valid version (multiple choice task) or a higher ecological valid version (reaction task) of a hazard perception test. In both conditions, the same 20 animated hazardous or non-hazardous traffic scenarios were presented. Overall, the experienced drivers outperformed the learner drivers. Principally, both of the applied versions of the test provided a criterion valid measure of driving expertise. However, increasing the ecological validity of the test by using a reaction task was especially beneficial for certain types of scenarios, leading to higher expertise-related differences. In addition, the reaction task provides response time measure as a further valid performance indicator. This allows the identification of those participants who are indeed able to detect a hazard in a certain scenario, but still have deficits in response time, compared to more experienced drivers. According to the present study, it is recommended to choose the reaction task over the multiple choice task to test hazard perception. Whether a further increase in ecological validity of the task would be useful, should be tested empirically in future research. 相似文献
32.
Joseph A. Durlak Joseph L. Mahoney Amy M. Bohnert Maria E. Parente 《American journal of community psychology》2010,45(3-4):285-293
Participating in after-school programs (ASPs) has become a common experience for children. This special issue provides a perspective on the current status of research on ASPs. This introductory article overviews the historical and current context of ASPs and then describes a developmental ecological model to guide research in this area. The model offers a framework from which to organize and synthesize the research presented in this issue. Key principles include a holistic view of development that recognizes interrelations between multiple domains of youth adjustment, attention to multiple, relevant factors within and outside of youth that affect development, examining the dynamic interplay between persons, program features, and other contexts over time, and understanding the active role of youth in affecting their own development. These principles are examined in relation to five main areas: youth characteristics, social ecologies, program features, participation, and short- and long-term outcomes. Recommendations for future research are discussed. 相似文献
33.
\"必要伤害\"是在对不伤害原则理论缺陷的反思、挖掘和借鉴西方生态伦理学有关解决人与自然矛盾和冲突的伦理思想的基础上,提出的新的道德规范原则。它包括:人类为了自身的利益对自然界不得不做出的损害;人类为了自然的完整和稳定不得不对自身的权利做出让步、节制而造成的损害。\"必要伤害\"原则的提出,既丰富和完善生态伦理学的道德原则体系,又为人们的生态道德实践提供了有效的行为指导。 相似文献
34.
Based on an analysis of the articles in this special issue, the authors propose five operating principles for systems change work. These principles are: clarifying the purpose of the systems change; identifying whether the change is one to an existing system or the change is to create a new system; conceptualize the work as systems change from the beginning; use an eclectic approach; and be open to opportunities that emerge while also undertaking forma analysis to identify leverage points. The authors argue that the time is now ripe to develop such principles and encourage community change agents to engage in a dialogue to explore, revise, eliminate or expand on these principles. 相似文献
35.
Janean E. Dilworth‐Bart Ayesha Khurshid Deborah Lowe Vandell 《Infant and child development》2007,16(5):525-552
Using Ecological Systems Theory and stage sequential modelling procedures for detecting mediation, this study examined how early developmental contexts impact preschoolers' performances on a measure of sustained attention and impulse control. Data from 1273 European‐American and African‐American participants in the NICHD Study of Early Child Care were used to identify the potential mediators of the relation between early household income‐to‐need (INR) and 54‐month impulsivity and inattention. Exploratory analyses were also conducted to determine whether the relationships between early income, home environment, parenting stress, and the outcome variables differ for African‐American versus European‐American‐American children. We found modest support for the study hypothesis that 36‐month home environment quality mediated the INR/attention relationship. INR accounted for more home environment score variance and home environment accounted for more Impulsivity score variance for African‐American children. Home environments were related to inattention in the European‐American, but not African‐American, group. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
36.
Walter B. Gulick 《Zygon》2005,40(1):89-96
Abstract. Michael Polanyi criticized the neo‐Darwinian synthesis on two grounds: that accidental hereditary changes bringing adaptive advantages cannot account for the rise of discontinuous new species, and that a Ideological ordering principle is needed to explain evolutionary advance. I commend the previous articles by John Apczynski and Richard Gelwick and also argue, more strongly than they, that Polanyi's critique of evolutionary theory is flawed. It relies on an inappropriate notion of progress and untenable analogies from the human process of scientific discovery and the fact that in physical systems minimal potential energy is most stable. Yet within a life of commitment to transcendent values humans can directly experience purpose and meaning, and in developing this notion Polanyi makes his greatest contribution to teleology. 相似文献
37.
孔子晚年心志蠡测--并为《莫春篇》作一新解 总被引:2,自引:0,他引:2
孔子晚年的心志如何,的确多费猜疑。作者发现其中最主要的关键在于如何对当今留下的史料作恰当的选取与解读而已。本文以《论语》为基准,通过《易传》与《春秋》来了解孔子晚年的思想。对《论语》里自古以来号称难解的《莫春篇》作出新的了解,显豁孔子晚年密契天道的意境,指出这正是孔子志存拨乱,推阐易道,作《春秋》运诸三世之苦心。后世实在不宜再忽视或过度怀疑《孟子·滕文公下》、《史记·孔子世家》及新近出土帛书《易传·要篇》等史料具有呈显孔子晚年思想实况的价值性. 相似文献
38.
Exploring Decision Making Around Therapist Self‐Disclosure in Cognitive Behavioural Therapy
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Background
Therapist self‐disclosure (TSD) usage varies greatly among different psychotherapy orientations. Anecdotal evidence seems to suggest that there are reasons for its judicious use, and a small number of researchers have proposed guidelines for how TSD should be used to help therapists across psychotherapy models make decisions around disclosure. However, there is almost no literature specifically exploring how cognitive behaviour therapy (CBT) practitioners make decisions around employing TSD within the CBT framework.Objective
This study aimed to explore how experienced CBT practitioners make decisions around TSD.Method
In‐depth qualitative interviews were conducted with six clinical psychologists who were trained and experienced in CBT, and the interviews were analysed thematically.Results
There were two overarching themes in terms of how they made decisions to self‐disclose: (A) the rules for TSD use, which included sub‐themes (a) it must have a clear purpose, (b) it must fit, (c) the therapist must maintain boundaries, and (d) the therapist must always reflect on his/her use of TSD; and (B) how they use TSD, which included subthemes of (a) using it as a tool for change and (b) using it to manage the therapeutic relationship.Conclusion
Participants’ decisions on whether or not to self‐disclose were strongly influenced by the CBT model, and this process went beyond what is suggested in the transtheoretical literature. Understanding this process may lead to the development of CBT‐specific guidelines for making TSD‐related decisions. 相似文献39.
随着人类辅助生殖技术 (assisted reproductive technology, ART) 的发展, 术后进行的定期随访工作在ART中的伦理学问题不断凸显, 有必要对其重视及规范。从伦理原则角度探讨了ART随访工作中存在的诸多伦理学问题, 即个人隐私权保护的缺失、知情同意的形式化、医源性多胎的伦理困境等。保密互盲、知情同意、保护患者、保护后代等伦理原则监督和规范ART近期及远期随访工作, 对于引导人类辅助生殖技术健康发展, 具有重大现实意义。 相似文献
40.