Relative Persuasiveness of Gain‐ Versus Loss‐Framed Human Papillomavirus Vaccination Messages for the Present‐ and Future‐Minded

This research examines how young adults' attitudes toward human papillomavirus (HPV) vaccination and their intentions to get the vaccine are influenced by the framing of health messages (gain vs. loss) and time orientation (i.e., the extent to which people value immediate vs. distant consequences of their decisions). Results of an experiment showed an overall persuasive advantage for loss‐framed messages. Attitudes and behavioral intentions toward HPV vaccination were found to be more favorable among future‐minded individuals. Moreover, an interaction between framing and time orientation was found to predict persuasive outcomes. Present‐minded participants responded more favorably to the loss‐framed message, whereas future‐minded participants were equally persuaded by both frames. Implications of the findings for vaccine risk communication are discussed.     

慢性强迫游泳应激对大鼠情绪和脑细胞外信号调节激酶的影响

为探讨慢性强迫游泳应激对动物情绪和脑组织细胞外信号调节激酶（extracellular signal-regulated kinase, ERK1/2）的影响,动物情绪和脑组织ERK1/2之间的关系,将动物随机分为游泳应激组、装置对照组和控制组。分别对三组大鼠给予相应的干预14天, 然后进行行为观察,免疫印记法测定海马和前脑皮质ERK1/2水平。结果表明强迫游泳应激组和装置对照组都出现明显的情绪障碍。两组大鼠ERK1/2在前脑皮质的表达水平均显著升高,海马无显著变化。前脑皮质ERK2与糖精水摄入量呈显著负相关。提示慢性强迫游泳应激能够诱导大鼠的情绪障碍,提高ERK1/2在前脑皮质的表达水平,ERK1/2与情绪关系密切,可能是脑组织应激性情绪调节的重要生理机制。强迫游泳应激能够导致动物明显的抑郁反应,是比较理想的抑郁动物模型     

青少年线上积极自我呈现与幸福感的关系:线上积极反馈与自尊的作用

采用社交网站自我呈现问卷、社交网站积极反馈问卷、牛津幸福感问卷和整体自尊量表对1804名中学生进行调查,探讨了社交网络使用中的积极自我呈现与幸福感的关系,以及线上积极反馈在二者关系间的中介作用和自尊对这一中介模型的调节作用。结果发现：（1）线上积极自我呈现、线上积极反馈、自尊与幸福感两两均呈显著正相关;（2）线上积极自我呈现不仅能直接正向预测青少年的幸福感,还能通过线上积极反馈的中介作用对幸福感产生作用;（3）自尊不仅能调节线上积极自我呈现对幸福感的直接效应,还能调节线上积极自我呈现经由线上积极反馈预测幸福感的中介作用的前半路径。研究揭示了青少年线上积极自我呈现与幸福感关系的作用机制,有助于引导青少年通过社交网络使用促进积极心理品质的发展。     

宽带宽噪音图片朝向辨识任务上的“反倾斜效应”

本研究探讨宽带宽噪音图片的反倾斜效应及短期训练对其影响。首先,我们测量被试对四个朝向(0°,45°,90°和135°)噪音图片的知觉明显度阈值。然后根据被试的阈值生成图片,让被试完成朝向辨识任务,记录正确率和反应时。结果表明人对倾斜朝向刺激的辨识显著好于主要朝向。并且,被试对所有朝向刺激的辨识经训练后都有显著提高。本研究提示人们对于这种宽带宽噪音图片的辨识能够学习,但是短期的训练不能使反倾斜效应消失。     

中国OFDI的出口效应:基于东道国经济发展水平差异的实证分析

本文基于2003-2009年中国对92个国家(地区)对外直接投资(OFDI)和出口的面板数据与交叉价格,对中国OFDI的出口效应进行了实证研究。结果表明,从全球来看,中国的OFDI促进了出口的增长;从国别来看,中国对发展中国家的OFDI与出口之间呈互补效应,对发达国家的OFDI与出口则呈替代效应。在此基础上的门槛面板分析则进一步发现,出口效应的差异与OFDI规模密切相关,即只有OFDI跨越初始门槛水平时,才能对出口产生互补效应;随着OFDI跨越门槛水平的提高,OFDI对出口的促进效应将会愈加显著。     

Object-centered reference systems and human spatial memory

The present study investigated the role of object-centered reference systems in memories of objects' locations. Participants committed to memory the locations and orientations of either 11 human avatars (Experiment 1) or 11 animal models (Experiment 2) displayed in a desktop virtual environment and then completed judgments of relative directions, in which they pointed to objects from imagined vantage points corresponding to the locations of the objects. Results showed that, with avatars, performance was better when the imagined heading was congruent with the facing direction of the avatar located at the imagined vantage point. With animal models, no such facilitation was found. For both types of stimuli, performance was better for the learning view than for the novel 135° view. Results demonstrate that memories of the locations of objects are affected by object-centered reference systems and are consistent with conjectures that spatial memories are hierarchies of spatial reference systems, with higher levels corresponding to larger scales of space.     

创业专业人才的机会识别与开发策略模型:基于建构主义视角

创业专业人才的机会识别和开发日益成为研究者普遍关注的问题和人力资源管理的重要策略.这方面的研究主要采用了机会识别和开发策略等两种不同的视角.本研究以建构主义视角为新思路,提出创业专业人才的机会识别模型,用以探究创业专业人才的机会形成与开发策略,认为个体从创业环境中建构并发展了机会识别、选择和开发策略的释义,从而使得创业专业人才的机会识别过程成为关键的机制.机会识别、选择和开发等过程交互影响,共同建构了创业专业人才的开发模型.未来研究应更多关注创业机会的建构机制,探索机会的过程整合和决策研究.     

Task complexity,student perceptions of vocabulary learning in EFL,and task performance

Background. The study deepened our understanding of how students’ self‐efficacy beliefs contribute to the context of teaching English as a foreign language in the framework of cognitive mediational paradigm at a fine‐tuned task‐specific level. Aim. The aim was to examine the relationship among task complexity, self‐efficacy beliefs, domain‐related prior knowledge, learning strategy use, and task performance as they were applied to English vocabulary learning from reading tasks. Sample. Participants were 120 second‐year university students (mean age 21) from a Chinese university. Method. This experiment had two conditions (simple/complex). A vocabulary level test was first conducted to measure participants’ prior knowledge of English vocabulary. Participants were then randomly assigned to one of the learning tasks. Participants were administered task booklets together with the self‐efficacy scales, measures of learning strategy use, and post‐tests. Data obtained were submitted to multivariate analysis of variance (MANOVA) and path analysis. Results. Results from the MANOVA model showed a significant effect of vocabulary level on self‐efficacy beliefs, learning strategy use, and task performance. Task complexity showed no significant effect; however, an interaction effect between vocabulary level and task complexity emerged. Results from the path analysis showed self‐efficacy beliefs had an indirect effect on performance. Our results highlighted the mediating role of self‐efficacy beliefs and learning strategy use. Conclusions. Our findings indicate that students’ prior knowledge plays a crucial role on both self‐efficacy beliefs and task performance, and the predictive power of self‐efficacy on task performance may lie in its association with learning strategy use.     

Target localization after saccades and at fixation: Nontargets both facilitate and bias responses

ABSTRACT

The image on our retina changes every time we make an eye movement. To maintain visual stability after saccades, specifically to locate visual targets, we may use nontarget objects as “landmarks”. In the current study, we compared how the presence of nontargets affects target localization after saccades and during sustained fixation. Participants fixated a target object, which either maintained its location on the screen (sustained-fixation trials), or displaced to trigger a saccade (saccade trials). After the target disappeared, participants reported the most recent target location with a mouse click. We found that the presence of nontargets decreased response error magnitude and variability. However, this nontarget facilitation effect was not larger for saccade trials than sustained-fixation trials, indicating that nontarget facilitation might be a general effect for target localization, rather than of particular importance to post-saccadic stability. Additionally, participants’ responses were biased towards the nontarget locations, particularly when the nontarget-target relationships were preserved in relative coordinates across the saccade. This nontarget bias interacted with biases from other spatial references, e.g., eye movement paths, possibly in a way that emphasized non-redundant information. In summary, the presence of nontargets is one of several sources of reference that combine to influence (both facilitate and bias) target localization.     

The representation and perception of 3D space: Interactions between 2D location and depth

ABSTRACT

We live in a 3D world, and yet the majority of vision research is restricted to 2D phenomena, with depth research typically treated as a separate field. Here we ask whether 2D spatial information and depth information interact to form neural representations of 3D space, and if so, what are the perceptual implications? Using fMRI and behavioural methods, we reveal that human visual cortex gradually transitions from 2D to 3D spatial representations, with depth information emerging later along the visual hierarchy, and demonstrate that 2D location holds a fundamentally special place in early visual processing.