Rôle du cahier des charges et de l’évaluation de sites web sur l’effet de conformité à travers la gestion de contraintes et la qualité ergonomique de pages web

IntroductionPrevious studies have shown that the schedule of conditions orientates the designers’ activity. It leads them to generate and consider more constraints linked to the prescribed ones (provided in the schedule of conditions). In addition, when designers had to evaluate websites before making their productions, they reused into their own productions some characteristic from websites evaluated and visited before designing (that corresponds to the conformity effect).ObjectiveWe carried out an experimental study that aimed to determine the mutual influence of schedule of conditions and conformity effect on constraints accounted by designers and usability quality of the web pages they created. No study has determined the combined effects of these two points of web design on the designers’ activity.MethodTwo groups of professional web designers (the first one dealt with a creative schedule of conditions and the other one with an ergonomic schedule of conditions) had to create two webpages (home page and another one). The experimental study was divided into three successive stages: (1) launching of the two-page design, (2) evaluating two websites, and (3) continuing the two-page design.ResultsThe main results showed that the constraints prescribed in the schedule of conditions affected the first stage of design. Nevertheless, after the evaluation stage (stage 2), this influence decreased during the last design stage (stage 3).ConclusionThe evaluation improved the number of constraints linked to end-users taken into account by the designers during the last stage of their design activity. Nevertheless, the usability quality of web pages created by designers was higher for the designers who dealt with the ergonomic schedule of conditions than for the others.     

Effects of specific emotions on subjective judgment,driving performance,and perceived workload

The aim of this paper was to explore effects of specific emotions on subjective judgment, driving performance, and perceived workload. The traditional driving behavior research has focused on cognitive aspects such as attention, judgment, and decision making. Psychological findings have indicated that affective states also play a critical role in a user’s rational, functional, and intelligent behaviors. Most applied emotion research has concentrated on simple valence and arousal dimensions. However, recent findings have indicated that different emotions may have different impacts, even though they belong to the same valence or arousal. To identify more specific affective effects, seventy undergraduate participants drove in a vehicle simulator under three different road conditions, with one of the following induced affective states: anger, fear, happiness, or neutral. We measured their subjective judgment of driving confidence, risk perception, and safety level after affect induction; four types of driving errors: Lane Keeping, Traffic Rules, Aggressive Driving, and Collision while driving; and the electronic NASA-TLX after driving. Induced anger clearly showed negative effects on subjective safety level and led to degraded driving performance compared to neutral and fear. Happiness also showed degraded driving performance compared to neutral and fear. Fear did not have any significant effect on subjective judgment, driving performance, or perceived workload. Results suggest that we may need to take emotions and affect into account to construct a naturalistic and generic driving behavior model. To this end, a specific-affect approach is needed, beyond the sheer valence and arousal dimensions. Given that workload results are similar across affective states, examining affective effects may also require a different approach than just the perceived workload framework. The present work is expected to guide emotion detection research and help develop an emotion regulation model and adaptive interfaces for drivers.     

女性体形对吸引力与能力评价影响的分离效应

采用Stunkard等人编制的9点女性体形评定图片,使用排序法、评分法、评估法以及选美和选搭档的情景题目,对女性体形、吸引力与能力之间的关系进行了探索.各种方法一致发现吸引力与能力均和体形之间存在倒U形关系,但最具能力的体形和最具吸引力的体形并不一致,人们倾向认为偏瘦体形人物最具吸引力,但中等体形人物能力最强,存在分离现象.此外,女性虽不能正确知觉男性眼中最有吸引力的体形,但能正确知觉男性眼中最有能力的体形.本研究进一步发现,男性的分配观念可为女性不惜牺牲能力评价而热衷减肥的行为提供一定的解释.本研究的结果有助于人们认清体形吸引力与体形所展现出来的能力的分离关系,帮助女性更加理性地认识自己的体形.同时,该研究结果还可为有效减少女性盲目减肥提供科学依据.     

Decision Difficulty in the Age of Consumer Empowerment

In this review, we examine the impact of two key factors of consumer empowerment–choice freedom and expansion of information--on the choice difficulty consumers experience in today’s decision environment. We posit that though these two consumer empowerment factors offer numerous potential benefits, they also can magnify such sources of decision difficulty as task complexity, tradeoff difficulty, and preference uncertainty. Next we review several key moderators, including consumer knowledge, mental representation, and maximization tendencies as well as information type and organization, that can exacerbate or mitigate the effect of these consumer empowerment factors on decision difficultly outcomes. Lastly, we examine the effectiveness of decision aids in assisting consumers navigate the complexity of today’s decision environment, and we identify areas for future investigation.     

独立预测作用,还是基础性影响？——价值观对集体行动的影响机制

为阐明价值观在集体行动参与中的地位和影响机制,研究者以利比亚事件为背景,针对现实和网络场域中不同程度的4类集体行动倾向,在天津市957名大学生中进行问卷调查研究,结果发现：价值观显著增加了低成本集体行动倾向解释率,并调节着情绪、工具性动机和社会认同对集体行动倾向的影响;中国人进行集体行动决策时具有集体主义理性计算特征;不同场域和程度的集体行动有其各自规律.结论：价值观在集体行动参与决策中是一种与社会认同类似的基础性变量.     

特殊教育教师工作要求与职业倦怠：心理控制源的中介作用

目的：考察心理控制源在特殊教育教师工作要求与职业倦怠间的中介作用.方法：整群抽取252名特殊教育教师接受量表测量.结果：（1）工作要求与职业倦怠存在显著的性别差异;（2）相关分析表明,工作要求、职业倦怠与心理控制源之间呈显著相关;（3）心理控制源在工作要求与职业倦怠间起着中介作用;独立的中介效应检验中,三种控制源（内控性、有势力的他人、机遇）在工作要求与职业倦怠间都起着部分中介作用;综合模型中,工作要求主要通过有势力的他人这一中介与职业倦怠产生联系,同时也与职业倦怠间存在直接效应.结论：心理控制源是工作要求预测职业倦怠的部分中介因素.     

Abnormalities in visual processing amongst students with body image concerns

Individuals with body dysmorphic disorder (BDD) appear to possess abnormalities in the way they observe and discriminate visual information. A pre-occupation with perceived defects in appearance has been attributed to a local visual processing bias. We studied the nature of visual bias in individuals who may be at risk of developing BDD – those with high body image concerns (BICs) – by using inverted stimulus discrimination. Inversion disrupts global, configural information in favor of local, feature-based processing. 40 individuals with high BIC and 40 low BIC controls performed a discrimination task with upright and inverted faces, bodies, and scenes. Individuals with high BIC discriminated inverted faces and bodies faster than controls, and were also more accurate when discriminating inverted bodies and scenes. This reduction in inversion effect for high BIC individuals may be due to a stimulus-general local, detail-focused processing bias, which may be associated with maladaptive fixation on small features in their appearance.     

Effects of testing on subsequent re‐encoding and long‐term forgetting of action‐relevant materials: On the influence of recall type

Testing one's memory of previously studied information reduces the rate of forgetting, compared to restudy. However, little is known about how this direct testing effect applies to action phrases (e.g., “wash the car”) – a learning material relevant to everyday memory. As action phrases consist of two different components, a verb (e.g., “wash”) and a noun (e.g., “car”), testing can either be implemented as noun‐cued recall of verbs or verb‐cued recall of nouns, which may differently affect later memory performance. In the present study, we investigated the effect of testing for these two recall types, using verbally encoded action phrases as learning materials. Results showed that repeated study–test practice, compared to repeated study–restudy practice, decreased the forgetting rate across 1 week to a similar degree for both noun‐cued and verb‐cued recall types. However, noun‐cued recall of verbs initiated more new subsequent learning during the first restudy, compared to verb‐cued recall of nouns. The study provides evidence that testing has benefits on both subsequent restudy and long‐term retention of action‐relevant materials, but that these benefits are differently expressed with testing via noun‐cued versus verb‐cued recall.     

Patterns of Response Times and Response Choices to Science Questions: The Influence of Relative Processing Time

We report on five experiments investigating response choices and response times to simple science questions that evoke student “misconceptions,” and we construct a simple model to explain the patterns of response choices. Physics students were asked to compare a physical quantity represented by the slope, such as speed, on simple physics graphs. We found that response times of incorrect answers, resulting from comparing heights, were faster than response times of correct answers comparing slopes. This result alone might be explained by the fact that height was typically processed faster than slope for this kind of task, which we confirmed in a separate experiment. However, we hypothesize that the difference in response time is an indicator of the cause (rather than the result) of the response choice. To support this, we found that imposing a 3‐s delay in responding increased the number of students comparing slopes (answering correctly) on the task. Additionally a significant proportion of students recognized the correct written rule (compare slope), but on the graph task they incorrectly compared heights. Finally, training either with repetitive examples or providing a general rule both improved scores, but only repetitive examples had a large effect on response times, thus providing evidence of dual paths or processes to a solution. Considering models of heuristics, information accumulation models, and models relevant to the Stroop effect, we construct a simple relative processing time model that could be viewed as a kind of fluency heuristic. The results suggest that misconception‐like patterns of answers to some science questions commonly found on tests may be explained in part by automatic processes that involve the relative processing time of considered dimensions and a priority to answer quickly.     

邻近效应对多媒体学习中图文整合的影响:线索的作用

在多媒体学习中图文排列的邻近或远离会影响学习的效果。本研究操纵了多媒体呈现的图文排列位置,采用颜色作为线索引导注意,探讨了线索有无和图片-文字的空间位置对多媒体学习图文整合的影响。结果发现:图文邻近呈现时的保持测验和迁移测验成绩好于图文远离呈现,图文邻近呈现时学习者对关键兴趣区的进出次数更多,体现出以文字为导向的阅读模式。线索并没有单独影响学习成绩和注意分配;但结合图文位置后,发现有线索时图文邻近学习材料的注视次数、进出关键兴趣区的次数显著多于图文远离。研究认为:图文的邻近效应不仅提高学习者对知识的识记和理解,同时也影响了学习者的注意分配过程,图文邻近呈现有助于图片和文本信息的注意联结和知识整合;线索能使邻近效应得到凸显,更好地促进图文信息的注视加工,但没有改进学习的效果。