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121.
Overestimations of null contingencies between a cue, C, and an outcome, O, are widely reported effects that can arise for multiple reasons. For instance, a high probability of the cue, P(C), and a high probability of the outcome, P(O), are conditions that promote such overestimations. In two experiments, participants were asked to judge the contingency between a cue and an outcome. Both P(C) and P(O) were given extreme values (high and low) in a factorial design, while maintaining the contingency between the two events at zero. While we were able to observe main effects of the probability of each event, our experiments showed that the cue- and outcome-density biases interacted such that a high probability of the two stimuli enhanced the overestimation beyond the effects observed when only one of the two events was frequent. This evidence can be used to better understand certain societal issues, such as belief in pseudoscience, that can be the result of overestimations of null contingencies in high-P(C) or high-P(O) situations. 相似文献
122.
Raúl Medina‐Mora Terry Winograd Rodrigo Flores Fernando Flores 《The Information Society》2013,29(4):391-404
Abstract This paper describes the ActionWorkflow? approach to workflow management technology: a design methodology and associated computer software for the support of work in organizations. The approach is based on theories of communicative activity as language/action, developed in a series of systems for coordination among users of networked computers. This article describes the approach, gives an example of its application, and shows the architecture of a workflow management system based on it. 相似文献
123.
Laura Campo-Dea?o Roel P. A. Dullens Dirk G. A. L. Aarts Fernando T. Pinho Mónica S. N. Oliveira 《Biomicrofluidics》2013,7(3)
The non-Newtonian properties of blood are of great importance since they are closely related with incident cardiovascular diseases. A good understanding of the hemodynamics through the main vessels of the human circulatory system is thus fundamental in the detection and especially in the treatment of these diseases. Very often such studies take place in vitro for convenience and better flow control and these generally require blood analogue solutions that not only adequately mimic the viscoelastic properties of blood but also minimize undesirable optical distortions arising from vessel curvature that could interfere in flow visualizations or particle image velocimetry measurements. In this work, we present the viscoelastic moduli of whole human blood obtained by means of passive microrheology experiments. These results and existing shear and extensional rheological data for whole human blood in the literature enabled us to develop solutions with rheological behavior analogous to real whole blood and with a refractive index suited for PDMS (polydymethylsiloxane) micro- and milli-channels. In addition, these blood analogues can be modified in order to obtain a larger range of refractive indices from 1.38 to 1.43 to match the refractive index of several materials other than PDMS. 相似文献
124.
Cross-linguistic studies suggest that the orthographic system determines the reading performance of dyslexic children. In opaque orthographies, the fundamental feature of developmental dyslexia is difficulty in reading accuracy, whereas slower reading speed is more common in transparent orthographies. The aim of the current study was to examine the extent to which different variables of words affect reaction times and articulation times in developmental dyslexics. A group of 19 developmental dyslexics of different ages and an age-matched group of 19 children without reading disabilities completed a word naming task. The children were asked to read 100 nouns that differed in length, frequency, age of acquisition, imageability, and orthographic neighborhood. The stimuli were presented on a laptop computer, and the responses were recorded using DMDX software. We conducted analyses of mixed-effects models to determine which variables influenced reading times in dyslexic children. We found that word naming skills in dyslexic children are affected predominantly by length, while in non-dyslexics children the principal variable is the age of acquisition, a lexical variable. These findings suggest that Spanish-speaking developmental dyslexics use a sublexical procedure for reading words, which is reflected in slower speed when reading long words. In contrast, normal children use a lexical strategy, which is frequently observed in readers of opaque languages. 相似文献
125.
As our schools become increasingly diverse and the effects of immigration can be felt across the nation, some states have mandated that preservice teachers take endorsement courses that focus on teaching English Language Learners (ELLs) with the purpose of ensuring that teachers are able to meet ELLs' social and academic needs. A significant factor in improving instructional practices for ELLs is preservice teachers' confidence in their ability to teach ELLs successfully. What remains to be seen, however, is how best to organize and implement endorsement courses so that they have a positive effect on teachers' confidence to use their new knowledge to teach in effective ways. In this study, we discuss how endorsement curricula can build teachers' self-efficacy for teaching ELLs by not just covering the required content, but by being conscientious in how the curricula are organized and delivered. By providing teachers with the foundational knowledge through the use of meaningful and engaging pedagogical practices, preservice teachers' efficacy and beliefs about instructing ELLs will increase. This, in turn, will provide them with the confidence to teach those who may be very different culturally and linguistically from themselves. 相似文献
126.
Luis Fernando Macías 《Educational Studies A Journal of the American Educational Studies Association》2013,49(6):609-628
College-bound recipients of DACA—a 2012?US administrative policy officially titled Consideration for Deferred Action for Childhood Arrivals—face a series of administrative and financial barriers in pursuing postsecondary education. These barriers often include a complicated process for in-state tuition consideration, as well as exclusion from the majority of educational subsidies. This research sheds new light on DACA students’ own understanding of their financial exclusions and the often ingenious methods they use to finance higher education. The research employs critical race theory/LatCrit frameworks to examine the structural systems of exclusion within educational policies and the corresponding measures taken by DACA recipient students in Ohio to overcome them. Participants’ testimonios highlight their own resilience in the face of multiple obstacles, dispel notions of meritocracy in higher education, and educate institutional agents about funding inequities in an effort to rectify them. This work finds, in response to the barriers they face, many DACA recipients in Ohio find a variety of unconventional ways to navigate a complex admissions process and secure a means of paying entirely out of pocket for their tuition. Participants in this longitudinal, qualitative research refer to these navigational strategies as participating in “the scheme game.” The scheme game consists of 3 overlapping practices: “grindin’,” “hustlin’,” and “schemin’.” Rooted in hip-hop, these terms originally refer to the ways Black, Brown, and immigrant communities navigate the barriers of a formal economy and participate in an informal economy to financially sustain themselves. Additionally, the research introduces the scheme game as a new epistemological perspective from which to understand the measures some DACA students take to afford a higher education. 相似文献
127.
ResumenEn este artículo se estudia el concepto de egocentrismo espacial en una muestra de 47 niños entre 4 y 13 años, a través de un diseño transversal. Los resultados demuestran que los niños tienen capacidad de ponerse en el punto de vista del observador desde el período preescolar. Por otra parte, la capacidad de construir otras perspectivas con varios objetos, teniendo en cuenta las relaciones entre ellos, comienza a desarrollarse a partir de los 6 años en estrecha relación con la edad y el nivel de desarrollo. 相似文献
128.
129.
This paper examines ‘resilience’ of mathematics students in transition from a sociocultural perspective, in which resilience is viewed as relational and in particular as a function of the social and cultural capital students may bring to the new field. We draw on two students’ stories of transition, in which we recognise elements traditionally viewed as ‘risks’ for mathematics students in transition into institutions where new demands are made. However, in each case it seems that some of their apparent background ‘risk factors’—coming from poorer socioeconomic backgrounds and disadvantaged schools—have come to serve to constitute capital, buttressing their particular resilience, as they provide a crucial kind of autonomy that is particularly valued in the new institution. We identify the learners’ reflexivity as having been crucial to this accumulation of capital and we discuss some educational implications. 相似文献
130.
The purpose of this study was to determine whether supervisors' supervisory styles are related to master's‐level counseling students' satisfaction with supervision and their perceived self‐efficacy. Multiple regression analyses of data obtained for 82 participants indicated that particular supervisory styles were significant predictors of supervisees' satisfaction with supervision and perceived self‐efficacy. Findings can be used to enhance the training of supervisors. 相似文献