Metabolic costs of aggressive behaviour in the Siamese fighting fish,Betta splendens

Aggressive conflicts between males are often resolved by means of multiple ritualized agonistic displays without damaging escalation. Apparently, in such cases by using those displays opponents exchange important motivational and physical information on which they base a decision to stay or leave the interaction. In the Siamese fighting fish, the time spent spreading the dorsal fin and erecting the gill coverts predicts who will be the winner or loser of the interaction. Two experiments were carried out to study whether display performance might be costly. First, oxygen consumption was measured during mirror‐image stimulation. This experiment showed that oxygen consumption was positively correlated with gill cover erection and dorsal fin spread. In the second experiment, a fight between two opponents was simulated and the oxygen consumption of the expected winner and loser was compared. Metabolic rates were not different between winners and losers before and during the fight, but winners showed higher oxygen consumption in the night after the fight. These results are in accordance with costs of display performance and with long‐lasting physiological consequences of winning or losing a fight. Aggr. Behav. 32:1–7, 2006. © 2006 Wiley‐Liss, Inc.     

Quantifying the three-dimensional joint position sense of the shoulder

Joint position sense is important for performing activities of daily living and recreational activities. The objective of this study was to develop new insights into the proprioceptive capabilities of the shoulder using a novel virtual reality paradigm where participants actively recreated shoulder positions in all three dimensions. This allows for better identification of changes in joint position sense across different shoulder postures. Ten males and ten female healthy adults matched a cursor controlled by shoulder rotations calculated from motion capture tracking, to a target shoulder position presented in a virtual environment with the use of a virtual reality headset. Four elevation angles, three plane of elevation angles, and three rotation angles were investigated, totaling thirty-six angles that encompassed the range of motion of the shoulder. Joint position sense was enhanced as the elevation angle was increased, and further enhanced when the arm was more externally rotated and elevated. As elevation angle increased to 90°, joint position sense significantly increased. There was also a significant interaction of external rotation on elevation angle. As elevation angle increased, participants were more accurate when the arm was externally, but exhibited greater variability. These improvements in joint position sense are likely produced by increased tension in muscles and capsuloligamentous mechanoreceptors within the shoulder. As many sports and activities of daily living require joint position sense to complete a task, the ability to elevate and externally rotate is important for adequate shoulder proprioception and control.     

Unpacking the Unethical Gift: Gift Experience and Unethicality Assessment

This research investigates how contextual factors affect unethicality assessment of products. The research is conducted in the context of gifts and compares interpersonal gifts (IGs) and self-gifts (SGs) by examining individuals’ reactions in front of unethical gifts. Five experiments investigate how individuals assess product unethicality differently, depending on the source of the gift, being the Self or a gifter. This research employs attribution theory to explain the differences between IGs and SGs and identify psychological distance as a boundary condition for the effect.     

Infant sustained attention but not joint attention to objects at 9 months predicts vocabulary at 12 and 15 months

Vocabulary differences early in development are highly predictive of later language learning as well as achievement in school. Early word learning emerges in the context of tightly coupled social interactions between the early learner and a mature partner. In the present study, we develop and apply a novel paradigm—dual head‐mounted eye tracking—to record momentary gaze data from both parents and infants during free‐flowing toy‐play contexts. With fine‐grained sequential patterns extracted from continuous gaze streams, we objectively measure both joint attention and sustained attention as parents and 9‐month‐old infants played with objects and as parents named objects during play. We show that both joint attention and infant sustained attention predicted vocabulary sizes at 12 and 15 months, but infant sustained attention in the context of joint attention, not joint attention itself, is the stronger unique predictor of later vocabulary size. Joint attention may predict word learning because joint attention supports infant attention to the named object.     

萌：感知与后效

萌是对一系列由视觉感知的婴儿外貌或行为特征的概括性描述。本文在厘清萌与可爱关系的基础上, 对萌的维度做了进一步区分, 即除了幼萌以外, 萌还可能包含趣萌、听觉萌、嗅觉萌等其他维度。目前关于人们对萌的感知是否存在个体差异这一问题仍然存在争论, 而萌之载体的多样性则已经得到广泛认同。通过对一系列实证研究的回顾, 本文认为萌的后果主要体现在认知(如诱发脆弱性、天真等推断)、情感(如积极情绪、同情和柔情)和行为(如注意和关怀)三个方面。未来研究可进一步探讨萌的维度及其与道德的关系问题。     

绿色消费的困境：身份建构抑或环境关心?

绿色消费具有道德属性, 消费者既有可能是为了建构道德身份, 实现自我保护或自我提升(自我导向), 也有可能是源于内在的道德信念, 实现对环境的关心(环境导向)。基于身份建构的绿色消费会导致行为不稳定、甚至撒谎和盗窃等, 其心理机制是道德自我调节; 基于环境关心的绿色消费则与之相反, 它植根于更广泛的道德联想网络, 与节俭、自我控制等紧密相关, 道德认同机制在其中发挥作用。那么, 究竟是身份建构还是环境关心呢?在阐述调节因素基础上, 我们构建了基于个体生活方式的绿色消费模型, 从个体差异的视角回答了该问题。未来研究需要从理论和实践上进一步展开。     

谁更愿意购买绿色产品？认识绿色消费者

绿色消费虽然备受关注但消费者积极性却不高,这可能和个体差异性有关。为了考察绿色消费的积极性,本研究从个体差异的视角出发,引入购买时间距离这一变量,以揭示面对绿色产品的矛盾性消费者究竟更愿现在购买还是将来,决策模式是否会存在个体差异。研究发现,时间距离调节绿色消费观与产品购买意愿的关系,而产品价值感知部分中介了该调节作用。具体来说,绿色消费者不会受到时间框定的影响,而非绿色消费者则表现出时间框定效应即更倾向于在将来而不是现在购买绿色产品;这是因为绿色消费观以自上而下的方式影响绿色消费者动机加工,使绿色产品的价值感知较为稳定,而非绿色消费者的价值感知则根据购买时间距离的不同而变化。研究结果说明在生态文明建设日益紧迫的当下培育个体绿色消费观具有重要的意义。     

资源困境中共同收益延迟的影响：时间折扣的调节效应

通过测量83名大学生的时间折扣率和不同共同收益延迟时距上的金币拿取量,以探讨资源困境中共同收益延迟对个体决策的影响及时间折扣的调节效应。结果表明：（1）金币拿取量随共同收益延迟时距的增长而增加,增加趋势和初始时间点的金币拿取量均存在显著的个体差异;（2）时间折扣率反向调节初始延迟时间点的金币拿取量,正向调节金币拿取量随延迟时距增长而增加的速率。这表明资源困境与跨期选择两个不同研究领域具有紧密联系,对当前资源保护制度的制定与实施具有一定的启发意义。     

定制化信息对家庭节能行为决策过程影响的追踪研究

在移动互联网和大数据时代, 通过定制化信息推动家庭能源消费行为变革是一个亟待解决的前沿科学课题。本研究通过对固定样本组被试进行长期的行为观察、深度访谈、焦点小组、个案研究和单被试设计, 基于扎根理论技术考察定制化信息的即期和远期作用, 探索定制化信息影响节能行为决策过程的路径和机制。整合横断设计和纵向设计两者特点, 本研究拟采用聚合交叉设计对6个实验组被试进行18个月的追踪实验, 运用方差分析检验同一实验组被试不同时期的节能心理和行为决策差异, 比较不同实验组被试在特定时点截面的横向(静态)差异; 运用多层线性模型检验不同实验组节能行为及其决策过程变动趋势之间的(动态)差异, 分析特定维度定制化信息框架的边际效应。在此基础上, 设计并论证定制化信息的优化路径、实施策略和组合应用构想。本研究拟构建定制化信息对节能行为决策过程作用机制的理论模型(信息呈现−心理机制−节能行为决策模型), 为探究定制化信息影响节能行为决策过程的作用机制黑箱提供理论支持和实验证据。     

Individualism/Collectivism and Cultures of Happiness: A Theoretical Conjecture on the Relationship between Consumption, Culture and Subjective Well-Being at the National Level

This theory paper seeks to explain an empirical puzzle presented by past research on the relationship between consumption and subjective well-being (SWB). Research has shown that people in rich countries are, on average, significantly higher in SWB than people in poor countries, which is consistent with a strong link between one's overall level of consumption and one's SWB. However, when individuals within the same country are compared, income has little relationship to SWB above the level at which basic needs can be met, suggesting that higher levels of consumption may not be linked to higher levels of SWB. This link between consumption and SWB when nations are compared to each other, but not when individuals within a given nation are compared to each other, presents a puzzle. As a solution, I propose that economic development leads to higher levels of national average SWB not by increasing consumption (again, with the caveat that this statement excludes situations where basic needs are not being met), but by creating more individualistic cultures which encourage their members to pursue personal happiness over honor and meeting social obligations. Whether or not this is seen as a socially positive development depends in a circular fashion on the cultural values of the person making the judgement.