不同干扰刺激对成人数量估计的影响

研究采用自行设计的图形材料,考察了不同干扰刺激(纯靶刺激;干扰刺激与靶刺激数量相同;干扰刺激是靶刺激数量的2倍)对成人完成数量估计任务的影响.30名硕士生参加了本实验.行为数据和口头报告资料分析显示:1)反应时随数量估计任务难度的增加而不断增长;2)干扰刺激越多,任务越复杂,成人估计的误差率越高,准确性越低;3)成人存在多重数字表征形式,完成数量估计任务时主要采用线性表征,但随着干扰刺激物的增加,运用对数表征的趋势愈加明显.     

Ethics and Nanotechnology: Views of Nanotechnology Researchers

A study was conducted of nanotechnology (NT) researchers’ views about ethics in relation to their work. By means of a purpose-built questionnaire, made available on the Internet, the study probed NT researchers’ general attitudes toward and beliefs about ethics in relation to NT, as well as their views about specific NT-related ethical issues. The questionnaire attracted 1,037 respondents from 13 U.S. university-based NT research facilities. Responses to key questionnaire items are summarized and noteworthy findings presented. For most respondents, the ethical responsibilities of NT researchers are not limited to those related to safety and integrity in the laboratory. Most believe that NT researchers also have specific ethical responsibilities to the society in which their research is done and likely to be applied. NT appears to be one of the first areas of contemporary technoscientific activity in which a long-standing belief is being seriously challenged: the belief that society is solely responsible for what happens when a researcher’s work, viewed as neutral and merely enabling, is applied in a particular social context. Survey data reveal that most respondents strongly disagree with that paradigmatic belief. Finally, an index gauging NT researcher sensitivity to ethics and ethical issues related to NT was constructed. A substantial majority of respondents exhibited medium or high levels of sensitivity to ethics in relation to NT. Although most respondents view themselves as not particularly well informed about ethics in relation to NT, a substantial majority are aware of and receptive to ethical issues related to their work, and believe that these issues merit consideration by society and study by current and future NT practitioners.

Perceiving Other Planets: Bodily Experience,Interpretation, and the Mars Orbiter Camera

An emerging philosophical perspective called “postphenomenology,” which offers reflection upon human relations to technology, has the potential to increase our understanding of the functions performed by imaging technologies in scientific practice. In what follows, I review some relevant insights and expand them for use in the concrete analysis of practices of image interpretation in science. As a guiding example, I explore how these insights bear upon a contemporary debate in space science over images of the fossilized remains of a river delta on the surface of Mars. These considerations include an analysis of the ways that the objects of study are transformed by the mediating imaging technologies, such as the Mars Orbiter Camera.

Crisis Management: Looking Back to Look Forward

Alexander George made a seminal contribution to theories of preventive diplomacy, crisis management, deterrence, and coercive diplomacy. Although he made his contribution in the highly structured environment of the Cold War, his analysis of the close connections between positive and negative inducements, the importance of interests in shaping outcomes, and the dangers of threat-based strategies as substitutes for policy speaks to the central challenges of contemporary global politics.     

The recognition heuristic in memory‐based inference: is recognition a non‐compensatory cue?

The recognition heuristic makes the strong claim that probabilistic inferences in which a recognized object is compared to an unrecognized one are made solely on the basis of whether the objects are recognized or not, ignoring all other available cues. This claim has been seriously challenged by a number of studies that have shown a clear effect of additional cue knowledge. In most of these studies, either recognition knowledge was acquired during the experiment, and/or additional cues were provided to participants. However, the recognition heuristic is more likely to be a tool for exploiting natural (rather than induced) recognition when inferences have to be made from memory. In our study on natural recognition and inferences from memory, around 85% of the inferences followed recognition information even when participants had learned three cues that contradicted recognition and when some of the contradictory cues were deemed more valid than recognition. Nevertheless, there were strong individual differences in the use of recognition. Whereas about half of the participants chose the recognized object regardless of the number of conflicting cues—suggestive of the hypothesized noncompensatory processing of recognition—the remaining participants were influenced by the additional knowledge. The former group of participants also tended to give higher estimates of recognition's validity. In addition, we found that the use of recognition for an inference may be affected by whether additional cue knowledge has been learned outside or within the experimental setting. Copyright © 2007 John Wiley & Sons, Ltd.     

初中生人格型乐观、应对策略与学业成绩的关系

采用生活取向测量、应对方式量表对514名初中生进行调查,旨在了解人格型乐观主义、应对策略与学业成绩之间的关系。运用相关分析和回归分析的方法对它们的关系进行了考察。结果发现初中生积极和消极应对策略在其乐观主义影响学业成绩中的中介效应不显著,在不同学业成绩群体中,乐观主义、应对策略和学业成绩的关系会产生变化,乐观主义和积极应对策略对学业成绩有显著的预测力。     

Can organisational safety climate and occupational stress predict work-related driver fatigue?

Road crashes are a significant cause of work-related injury and death. Driver fatigue is thought to cause 20–30% of fatal crashes. The current study utilised a survey to examine the relationship between safety climate, occupational stress and work-related driver fatigue. Drivers (n = 219) from two government organisations responded to items from the job-related tension scale [Kahn, R. L., Wolfe, D. M., Quinn, R. P., & Snoek, J. D. (1964). Organisational stress: Studies in role conflict and ambiguity. Malabar, FL: Krieger Publishing], safety climate questionnaire [Glendon, A., & Litherland, D. (2001). Safety climate factors, group differences and safety behaviour in road construction. Safety Science, 39, 157–188] and purpose-designed items on fatigue-related behaviour. Outcome measures were current self-reported, fatigue-related behaviour and self-reported ‘near (crash) misses’ during the previous 6 months. Together, occupational stress and safety climate predicted fatigue-related behaviour, accounting for 29% of the variance over and above that explained by control variables. Further, logistic regression revealed occupational stress and safety climate to be significant predictors of fatigue-related near misses. Safety climate emerged as a stronger predictor of both fatigue-related behaviour and near misses than occupational stress. Results suggest that organisations can play a part in improving the safety-related behaviours of their workforce through attention to safety climate and occupational stress.     

Relationship Trajectories: A Meta-Theoretical Framework and Theoretical Applications

This article introduces a metatheoretical framework—the Relationship Trajectories Framework—that conceptualizes how human mating relationships develop across their complete time span, from the moment two people meet until the relationship ends. The framework depicts relationships as arc-shaped evaluative trajectories that vary on five dimensions: shape (which includes ascent, peak, and descent), fluctuation, threshold, composition, and density. The framework can depict single trajectories in isolation or two partners’ trajectories with respect to each other (dyadic trajectories). Two theoretical models demonstrate the generative power of the framework—the relationship coordination and strategic timing (ReCAST) model and the sociosexuality trajectory model—both of which integrate close relationships and evolutionary psychological perspectives on mating. Finally, additional examples illustrate how the framework can generate new research questions about core relationships topics.     

Quality home visits: Activities to promote meaningful interactions

Examination of and support for specific practices that promote high-quality home visiting are essential as family support programs continue to expand across the country. The current study used direct observation of 91 home visits across 41 home visitors to examine relations among interaction partners, content of the interactions, the home-visitors’ activities, and quality of home-visitors’ practices and family-members’ engagement within programs funded by the Maternal, Infant, and Early Childhood Home Visiting program. More time spent in triadic interactions focused on child-related content, as measured by the Home Visit Rating Scale-Revised, was related to higher quality of family engagement in home visits, as measured with the Home Visit Observation Rating Scales. Time spent in adult-focused interactions and administrative tasks, however, was related to lower quality of home-visiting practices and family engagement. Implications for research and practice are discussed.     

员工负性情绪对情绪劳动策略的影响

情绪劳动指的是员工在工作中按照组织的要求来调节自己的情绪感受和表达, 是服务行业普遍关注的问题。本研究基于自我调节理论(Self-Regulation Theory), 探讨了员工个体内负性情绪对情绪劳动策略的影响效应, 以及个体间水平上员工工作年限和情绪智力对该效应的跨层次调节作用。通过分析收集自210名呼叫中心员工14个工作日的追踪数据, 本研究发现员工每天的负性情绪显著抑制了深层动作; 工作年限和情绪智力显著调节了个体内负性情绪对情绪劳动策略的影响效应。数据分析结果支持了情绪劳动的研究中自我调节理论的作用, 本研究也据此讨论了理论意义和实践应用价值。