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311.
In recent years, several authors have argued that the desirability of novel technologies should be assessed early, when they are still emerging. Such an ethical assessment of emerging technologies is by definition focused on an elusive object. Usually promises, expectations, and visions of the technology are taken as a starting point. As Nordmann and Rip have pointed out in a recent article, however, ethicists should not take for granted the plausibility of such expectations and visions. In this paper, we explore how the quality of expectations on emerging technologies might be assessed when engaging in a reflection on the desirability of emerging technologies. We propose that an assessment of expectations’ plausibility should focus on statements on technological feasibility, societal usability, and desirability of the expected technology. Whereas the feasibility statement and, to a lesser extent, the usability statements are frequently quite futuristic, the claims on desirability, by contrast, often display a conservative stance towards the future. Assessing the quality of expectations and visions on behalf of emerging technologies requires, then, a careful and well-directed use of both skepticism and imagination. We conclude with a brief overview of the tools and methods ethicists could use to assess claims made on behalf of emerging technologies and improve the ethical reflection on them.  相似文献   
312.
Self-regulation plays an important role in successful adaptation to preschool and school contexts as well as in later academic achievement. The current study relates different aspects of self-regulation such as temperamental effortful control and executive functions (updating, inhibition, and shifting) to different aspects of adaptation to school such as learning-related behavior, school grades, and performance in standardized achievement tests. The relationship between executive functions/effortful control and academic achievement has been established in previous studies; however, little is known about their unique contributions to different aspects of adaptation to school and the interplay of these factors in young school children. Results of a 1-year longitudinal study (N=459) revealed that unique contributions of effortful control (parental report) to school grades were fully mediated by children's learning-related behavior. On the other hand, the unique contributions of executive functions (performance on tasks) to school grades were only partially mediated by children's learning-related behavior. Moreover, executive functions predicted performance in standardized achievement tests exclusively, with comparable predictive power for mathematical and reading/writing skills. Controlling for fluid intelligence did not change the pattern of prediction substantially, and fluid intelligence did not explain any variance above that of the two included aspects of self-regulation. Although effortful control and executive functions were not significantly related to each other, both aspects of self-regulation were shown to be important for fostering early learning and good classroom adjustment in children around transition to school.  相似文献   
313.
Rheumatic diseases affect about 20% of the population, leading to common symptoms such as joint problems, pain, fatigue, and stiffness. Loneliness is prevalent in individuals with rheumatic diseases. This could be due to not receiving social support and being stigmatized and invalidated, which might be most common in fibromyalgia, a rheumatic disease that lacks medical evidence. The aim of this study was to compare loneliness in distinct rheumatic diseases and to examine the association of loneliness with social support and invalidation. Participants were 927 patients with ankylosing spondylitis (n = 152), fibromyalgia (n = 341), osteoarthritis (n = 150), rheumatoid arthritis (n = 171), or systemic diseases (n = 113). They completed online questionnaires including an 11-point Likert scale assessing loneliness, the Illness Invalidation Inventory (3*1; Kool et al., 2010), and the Social Support Survey (SSS; De Boer, Wijker, Speelman, & De Haes, 1996; Sherbourne & Stewart, 1991). Patients with fibromyalgia experienced significantly more loneliness than patients with ankylosing spondylitis and patients with rheumatoid arthritis. Besides being younger, having lower education, and not working, in multiple regression analyses both lack of social support and invalidation were independently correlated with loneliness. This suggests that to decrease loneliness, therapeutic attention should be given to both increasing social support as well as decreasing invalidation in patients with rheumatic diseases, especially in patients with fibromyalgia.  相似文献   
314.
Low-income African American children have disproportionately higher asthma morbidity and mortality. Education alone may not address barriers to asthma management due to psychosocial stress. This study evaluated the efficacy of a home-based family intervention integrating asthma education and strategies to address stress using a community-based participatory research model. Children age 8 to 13 with poorly controlled asthma and their caregivers were recruited from an urban hospital and an asthma camp. Caregivers with elevated scores on a stress measure were enrolled. Forty-three families were randomized to the 4- to 6-session Home Based Family Intervention (HBFI) or the single session of Enhanced Treatment as Usual (ETAU). All families received an asthma action plan and dust mite covers; children performed spirometry and demonstrated MDI/spacer technique at each home visit. The HBFI addressed family-selected goals targeting asthma management and stressors. Asthma management, morbidity, family functioning, and caregiver stress were assessed at baseline, postintervention, and 6 months after the intervention. ED visits and hospitalizations were ascertained by medical record review for a year after intervention completion. Only one child (5%) in HBFI had an asthma-related hospitalization compared to 7 patients (35%) in ETAU in the year following intervention. Participants in both groups demonstrated improved asthma management and family functioning, and reduced ED visits, symptom days, missed school days, and caregiver stress, but there were no differential treatment effects. The results suggest that a home-based intervention addressing medical and psychosocial needs may prevent hospitalizations for children with poorly controlled asthma and caregivers under stress.  相似文献   
315.
Dual-process theories have suggested that emotion plays a key role in the framing effect in decision-making. However, little is known about the potential impact of a specific positive or negative emotional context on this bias. We investigated this question with adult participants using an emotional priming paradigm. First, participants were presented with positive or negative affective pictures (i.e., pleasant vs. unpleasant photographs). Afterward, participants had to perform a financial decision-making task that was unrelated to the pictures previously presented. The results revealed that the presentation framed in terms of gain or loss no longer affected subjects' decision-making following specific exposure to emotionally pleasant pictures. Interestingly, a positive emotional context did not globally influence risk-taking behavior but specifically decreased the risk propensity in the loss frame. This finding confirmed that a positive emotional context can reduce loss aversion, and it strongly reinforced the dual-process view that the framing effect stems from an affective heuristic belonging to intuitive System 1. (PsycINFO Database Record (c) 2012 APA, all rights reserved).  相似文献   
316.
Visual search data were collected from six Ss on three target set sizes on each of 30 days. Error level was low, and items assigned to memory sets were nonnested and changed from session tosession. For each S. the same item sometimes required a positive and sometimes a negative response (response inconsistency). Combining data over Ss and over successive 6-day blocks, visual search rates as a function of target set size were found to be linear for each of the five 6-day blocks. The slopes of the above functions (memory search time) did not differ significantly over the final four 6-day blocks, and averaged approximately.500 sec per six-character item. These results are qualitatively very similar to results obtained from item recognition studies when error level, memory set structure, degree of response’_ consistency, and practice are handled in the same way in that task. The significantly lower slope obtained on the first 6-day block is shown to be consistent with a speed-accuracy trade off interpretation when error rate is expressed per unit of processing time (percent errors/set size). Over the final three 6-day blocks, where all important parameters ofthe data were highly stable, the intercepts of the memory search functions were found to closely approximate zero, averaging .0068 sec. From this finding, along with the finding that the memory search functions are linear, it is inferred that visual search time is determined entirely by memory search time, or by memory search time and other processes which increase linearly with set size, under the conditions of this experiment. The estimate of memory search time (approximately 83 msec/character) obtained using this visual search procedure is much slower than that obtained using the item recognition procedure (approximately 35\2-40 msec/character). An explanation for this difference is proposed.  相似文献   
317.
B erglund , B., B erglund , U., E kman , G. & F rankenhaeuser , M. The influence of auditory stimulus intensity on apparent duration. Scand J. Psychol ., 1969, 10 21–26.— apparent duration of an auditory signal of 1000 C/S was measured by the method of magnitude estimation. Ten different stimulus intensities ranging from 57 to 104 dB were used in combination with three different durations: 50, 250, and 500 msec. The results showed that the apparent duration of the signal grew as a logarithmic function of stimulus intensity. These results are consistent with the hypothesis relating apparent duration to activation level as well as with results of similar experiments involving electrical and vibrotactile stimulation.  相似文献   
318.
Catecholamine output, heart rate, and performance efficiency were examined in 28 Ss during two contrasting stimulus conditions, one of understimulation, and one of overstimulation. During understimulation the subject spent 3 hr performing a vigilance task, and during overstimulation he was exposed for the same time period to a complex sensorimotor test. Both understimulation and overstimulation produced a significant increase of adrenaline and noradrenaline release as compared with a control condition involving a medium amount of stimulation. Subjects who excreted relatively more adrenaline performed significantly better during understimulation, whereas subjects with relatively lower excretion rates of adrenaline tended to perform better under overstimulation. When performance efficiency was related to heart rate it was shown that high-heart rate subjects performed better during understimulation, while low-heart rate subjects performed better during overstimulation.  相似文献   
319.
Performance was measured by seven sensorimotor and perceptual tests given to 30 students in six successive trials, spread over five hours, before and after the intake of either 15 mg dexamphetamine, zoo mg Pentobarbitone, or a placebo. Subjective performance, level of aspiration, wakefulness, and mood were measured by a scaling method. A close agreement was found between the amount of objective and subjective improvement following dexamphetamine, whereas the objective impairment induced by Pentobarbitone was not reflected in the subjective measures. These results were examined in relation to the other indices of activation.  相似文献   
320.
Experience and knowledge   总被引:1,自引:0,他引:1  
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