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排序方式: 共有177条查询结果,搜索用时 15 毫秒
51.
These two studies investigated the influence of dispositional locus of control (LOC) on subjective and physiological responses to a novel laboratory stressor task. Across two studies, 64 healthy undergraduate students, ages 18-22, completed Levenson's (LOC) scales for internal, powerful others, and chance prior to performing a video-game task. Participants rated pretask and posttask stressfulness and coping ability (i.e., measures of primary and secondary appraisal). Cardiovascular measures (heart period, HP; preejection period, PEP; respiratory sinus arrhythmia, RSA; cardiac output, CO; systolic blood pressure, SBP; diastolic blood pressure, DBP & total peripheral resistance, TPR) were recorded during 4-minute baseline and 4-minute stressor task periods. The internal LOC factor predicted pretask reports of coping ability as well as posttask reports of stressfulness. In contrast, the powerful-others LOC factor predicted cardiac changes (HP, PEP, and RSA) during the task but not cardiac output or any other vascular change measure. These results underscore the importance of using the three subscales of the Levenson LOC to assess relationships between dispositional LOC and the response to stressors because self-reported appraisals of a task are predicted by a different component of dispositional LOC than are task-related cardiovascular functions. 相似文献
52.
Brain injury, stressor severity, depression, premorbid vulnerabilities, and PTSD are frequently intertwined in trauma populations. This interaction is further complicated when the neuropsychologist evaluates refugees from other cultures. In addition, the observed psychiatric symptoms reported in refugees and victims of mass violence may in fact not be the primary features of PTSD and depression but psychiatric symptoms secondary to the effects of traumatic brain injury. This paper reviews the occurrence of starvation, torture, beatings, imprisonment, and other head injury experiences in refugee and POW populations to alert treators to the presence of chronic and persistent neuropsychiatric morbidity, with implications for psychosocial adjustment. The concept of fixed neural loss may also interact with environmental and emotional stresses, and a model of neuropsychological abnormalities triggered by traumatic events and influenced by subsequent stress will also be considered. Neuropsychologists working with refugees play an important role in assessing the possibility of traumatic brain injury with tools that are relatively culture-fair. 相似文献
53.
Hazeltine E Aparicio P Weinstein A Ivry RB 《Journal of experimental psychology. Human perception and performance》2007,33(6):1451-1467
This study examined the representational nature of configural response learning using a task that required simultaneous keypresses with 2 or 3 fingers, similar to the production of chords on the piano. If the benefits of learning are related to the retrieval of individual stimulus-response mappings, performance should depend on the frequencies of the individual responses forming each chord. Alternatively, learning may involve the encoding of configural information concerning the relationship between the chord elements. In Experiment 1, training was restricted to a subset of the 120 possible 3-element chords. Probe blocks included the practiced chords, chords composed of novel configurations of practiced elements (reconfigured), and chords that contained a new element (new). Practiced chords were performed faster than reconfigured chords, indicating learning involves the encoding of configural information. Experiment 2 showed that learning was not restricted to configurations within each hand. Experiments 3 and 4 demonstrated that learning was largely response based. 相似文献
54.
Waters EA Weinstein ND Colditz GA Emmons KM 《Journal of experimental psychology. Applied》2007,13(1):11-21
Laypeople tend to be overly sensitive to side effects of treatments that prevent illness, possibly leading them to refuse beneficial therapies. This Internet-based study attempted to reduce such side effect aversion by adding graphic displays to the numerical risk probabilities. It also explored whether graphics reduce side effect aversion by making it easier for respondents to determine how the treatment might change their net cancer risk. Participants (N=4,248) were presented with a hypothetical preventive treatment situation that was or was not accompanied by a small side effect. In both conditions, the net absolute risk reduction was 12%. Adding an array of stick figures to risk probabilities reduced side effect aversion substantially, but adding a bar graph was not beneficial. The ability of arrays to reduce side effect aversion was not attributable to greater accuracy in evaluating the treatment's net benefit. 相似文献
55.
56.
Kim J. Overby Michael S. Weinstein Autumn Fiester 《The American journal of bioethics : AJOB》2015,15(8):3-9
Given the widening gap between the number of individuals on transplant waiting lists and the availability of donated organs, as well as the recent plateau in donations based on neurological criteria (i.e., brain death), there has been a growing interest in expanding donation after circulatory determination of death. While the prevalence of this form of organ donation continues to increase, many thorny ethical issues remain, often creating moral distress in both clinicians and families. In this article, we address one of these issues, namely, the challenges surrounding patient and surrogate informed consent for donation after circulatory determination of death. First we discuss several general concerns regarding consent related to this form of organ donation, and then we address additional issues that are unique to three different patient categories: adult patients with medical decision-making capacity or potential capacity, adult patients who lack capacity, and pediatric patients. 相似文献
57.
Jack Russell Weinstein 《Philosophia》2012,40(2):223-236
In this paper, I examine the claim that Rawls’s overlapping consensus is too narrow to allow most mainstream religions’ participation
in political discourse. I do so by asking whether religious exclusion is a consequence of belief or action, using conversion
as a paradigm case. After concluding that this objection to Rawls is, in fact, defensible, and that the overlapping consensus
excludes both religious belief and action, I examine an alternative approach to managing religious pluralism as presented
by Adam Smith. I show that Smith’s so-called “marketplace of religions” assumes and encourages religious conversion. I then
offer objections to Smith’s approach from Rawls’s point of view, concluding that, while Rawls cannot adequately respond to
the Smithian challenge, in the end the two positions are complimentary. 相似文献
58.
Matthew Weinstein 《Science as culture》2013,22(2):195-223
Abstract Tissue engineering is one potential arm of the much-heralded regenerative medicine. We use the concepts of technological zone, risk framing and regulatory jurisdiction to analyse what risks are formulated in the zone of tissue engineering and whether those risks are reflected in emerging regulatory policy in Europe. In the regulatory jurisdictions of the European Union, public health risks have become increasingly important. Tissue engineering challenges pre-existing regulatory frameworks. Scientific–industrial actors formulate the risks of tissue engineering in three primary frames: technological safety risk; therapeutic efficacy risk; and economic risk. Study of the prevailing configuration of European Commission institutions and the EU process of regulatory regime-building for tissue engineering shows that risk frames are mobilized selectively. Whilst the technological safety frame and the economic frame are strongly mobilized, therapeutic efficacy—especially comparative efficacy—is not. Additionally the regime avoids any Europe-level position on the so-called ethics of sourcing and engineering tissues and cells. Efficacy and ethics are defined as the jurisdiction of national authorities, underpinned by the subsidiarity principle. Outcomes include the likely banning of certain therapeutic technologies by European countries that have objections to products deriving from controversial materials and processes, and the prevention of adoption of products due to efficacy concerns, so creating new imbalances in the European therapeutic marketplace. Consequently, the tissue-engineered medical products that European societies consume, at least in the near term, will reflect the medically defined needs of the European population to a limited and patchy extent. 相似文献
59.
The resurging interest in identifying personality predictors of job performance has led researchers to use the five-factor model of personality as an important conceptual tool. Two recent meta-analyses illustrated the potential predictive power of the model within an employment context. In this study, we evaluated the relations between a well-validated self-report measure of the five-factor model and supervisor ratings of performance. Fifty-two women and 159 men completed the NEO Personality Inventory (Costa & McCrae, 1985) and were independently rated on various performance dimensions by their supervisors. Scores on the Conscientiousness scales correlated with all the performance ratings over this diverse number of occupational groups. Low Neuroticism and high Extraversion scores also predicted high performance. Low straightforwardness (a facet of agreeableness) was associated with ability to accomplish work-related goals and to adapt to changing work conditions. The results support the utility of the five-factor model as a predictor of job performance. 相似文献
60.
Five studies examined whether quality of motivation (as individual differences and primed) facilitates or thwarts integration of positive and negative past identities. Specifically, more autonomously motivated participants felt closer to, and were more accepting of, both negative and positive past characteristics and central life events, whereas more control-motivated participants were closer to and more accepting of positive, but not negative, past characteristics and events. Notably, controlled motivation hindered participants' acceptance of their own negative identities but not of others' negative identities, suggesting that control-motivated individuals' rejection of negative past identities was an attempt to distance from undesirable parts of themselves. Defensive processes, reflected in nonpersonal pronouns and escape motives, mediated interaction effects, indicating that lower defense allowed fuller integration. Integration of both positive and negative past identities predicted indicators of well-being, namely, vitality, meaning, and relatedness satisfaction. 相似文献