Conventional displays: Evidence for socially mediated costs of threat displays in a lizard

Threat displays are used to settle the vast majority of contests between green anoles (Anolis carolinensis). While these displays have been the subject of a number of studies, very little is understood about the information they convey. Theoretical models divide displays into several types of signals, based on the mechanism that stabilizes their use: 1) performance signals, 2) handicapping signals, or 3) conventional displays. The existence of performance displays has excellent empirical support, as do models of their use. Handicapped signalling models, especially those relating to mate‐choice, have been highly influential, though little evidence suggests that threat displays are, in fact, handicapping. Most threat displays appear to be conventional, but little empirical work documents conventional signalling systems. This study investigated the use of headbob, pushup, and lateral compression displays, and concluded that headbob cadence, a discrete signal with three alternative rhythms, is a conventional display indicating impending escalation. Pushups and lateral compression displays appear not to be handicaps, since neither indicates impending escalation, and they do not correlate with fighting ability or condition. Aggr. Behav. 30:326–341, 2004. © 2004 Wiley‐Liss, Inc.     

Overcoming focusing failures in competitive environments

This paper attacks one of the chief limitations of the field of behavioral decision research—the past inability to use this literature to improve decision making. Building on the work of Thompson, Gentner, Loewenstein and colleagues (Loewenstein, Thompson, & Gentner, 1999; Thompson, Gentner, & Loewenstein, 2000; Gentner & Markman, 1997), the current paper finds that it is possible to reduce bias in one of the most robust problems in the decision literature, the Acquiring a Company Problem (Samuelson & Bazerman, 1985). Past research has shown that individuals make suboptimal offers as a result of the failure to think about the decisions of others and to incorporate a clear understanding of the rules of the game. In the current study, we find that by allowing study participants to see and understand differences in seemingly unrelated decision problems—versions of the Monty Hall Game (Nalebuff, 1987; Friedman, 1998) and Multiparty Ultimatum Game (Messick, Moore, & Bazerman, 1997; Tor & Bazerman, 2003)—study participants can learn to focus more accurately on the decisions of other parties and the rules of the game, the keys to solving the Acquiring a Company Problem. This research offers a new piece of evidence that comparative and analogical processes may be a successful direction for improving decision making. Copyright © 2004 John Wiley & Sons, Ltd.     

从"对象"到"看"--维特根斯坦语言观的一个转变

本文试图从“对象”和“看”这两个概念出发来讨论维特根斯坦语言观的一个转变,在此讨论中,维特根斯坦有关“对象”和“看”的论述被置于其前后期思想的大背景中来加以考察。文章首先考察了维特根斯坦前期思想在“对象”这个概念上所面临的困难与错误,这种困难与错误构成了对其前期图像论语言观的挑战。接着,文章考察了维特根斯坦对图画所做的分析,认为图画的要点不在于它所指称的对象,而在于它如何被看,而如何被看实际上是“看”这个词的如何被使用。在此考察中,其后期游戏论的语言观得到了探讨。     

用安戈夫方法对网络成瘾与网络游戏成瘾的界定

旨在探讨网络成瘾与网络游戏成瘾的界定问题。采用标准设定中最为广泛使用的安戈夫方法对网络成瘾和网络游戏成瘾分别进行评定,最终得到的网络成瘾的界定量表,共有12个项目,界定分数为8,即受试者在12个项目中有8项作出肯定回答即被界定为网络成瘾;网络游戏成瘾的界定量表,共有10个项目,界定分数为7,即受试者在10个项目中有7项作出肯定回答即被界定为网络游戏成瘾。     

健康投资与政府宏观卫生政策取向的经济学分析

在整体方面,经济学认为健康是劳动力与资本,是社会经济体系中最主要的生产要素;在个体方面,经济学认为健康是人力资本,是能提高消费者满足程度的耐久资本品。健康人力资本通过改善个体在劳动市场的表现,提高个人收入,并作为一种投资促进了经济增长。对我国健康投资的重点领域及政府职责作了相关政策建议。     

What we want to do versus what we think we should do: an empirical investigation of intrapersonal conflict

People often feel torn between what they want to do and what they believe they should do. As a result, they experience intrapersonal conflict. For example, people know that they should avoid credit card debt, but they want to splurge on just one more purchase. Following Loewenstein's ( 1996 ) temporal perspective to understanding internal conflict and inconsistency, we offer three studies that empirically demonstrate (1) a distinction between the want self and the should self, (2) that behavior is more closely linked to the want self, (3) that the want self is the self that is temporally inconsistent, and (4) that adopting a want versus should perspective can have a significant impact on actual behavior. Copyright © 2002 John Wiley & Sons, Ltd.     

动态两难对策中信息反馈方式对合作行为的影响

本研究着重探讨了多人动态对策情景中信息反馈方式和群体认同度对合作行为变化的影响。结果表明,集体反馈比个人反馈更能促进被试的合作行为,而群体认同度对合作行为的影响不显著;在集体反馈条件下,合作行为在各轮次问的随机波动较大,但在三个决策阶段问较为稳定;个人反馈条件下,合作行为在各轮次问的随机波动较小,但在三阶段问呈现出不对称的“U”型变化趋势。研究认为,建立在反馈信息基础上的决策学习使合作行为的动态变化具有策略性和适应性。     

利用游戏log-file预测学生推理能力和数学成绩——机器学习的应用

以360名初中生为被试, 使用推箱子游戏, 结合游戏日志文件(log-file)和机器学习技术预测学生的推理能力和数学成绩。预测变量是从推箱子的过程数据中提取的一系列特征指标, 结果变量是瑞文推理测验成绩和数学成绩, 且均以25%为高低分组的临界值转换为二分变量。结果发现, 训练的模型预测推理能力最高能获得76.11%的查准率、65.72%的精确率、63.10%的查全率以及65.01%的F1得分; 预测数学成绩最高能获得83.07%的查准率、73.70%的精确率、73.33%的查全率以及75.57%的F1得分。研究结果说明, 机器学习建立的区分模型具有较好的预测效果, 利用log-file所记录的游戏过程数据可以对个体的能力进行有效预测。     

价值取向对自我他人决策时公平规范执行的影响

社会价值取向反映了人们对自己和他人分配结果的一种稳定偏好,影响着个体对提议公平性的认知及规范执行。同时,自我-他人决策差异也是影响规范执行的重要因素,但目前尚不清楚价值取向和社会距离如何影响公平规范执行。本研究选取了20名合作者和20名个人主义者,使用单次匿名最后通牒博弈任务,考察了资产分配情景中价值取向对自我-他人决策时公平规范执行的影响。结果表明：（1）相比自我决策条件,合作者在替他人决策时更多的接受不公平提议,而公平提议的接受率不受社会距离的调节;个人主义者的提议接受率则不受社会距离和提议类型的交互影响;（2）合作者替他人决策时的接受阈限显著高于自我决策,而个人主义者在自我决策和替他人决策时的接受阈限无显著差异。这些结果表明价值取向能够调节自我-他人决策时,人们对不公平提议的规范执行。     

信任者权力对其人际信任的影响

信任者权力对其人际信任的影响是基于双方权力的不对等实现的还是取决于信任者自身的权力水平的问题值得研究。为此,本研究在实验一中考查了信任博弈任务中信任者的权力感（与被信任者的权力水平无关）对其人际信任的影响,在实验二中通过角色扮演任务操纵信任者与被信任者的权力关系（对等vs.不对等）,同时测量信任者的人际信任倾向。结果表明：信任者自身的权力感影响其人际信任,低权力感个体比高权力感个体更信任他人;双方权力对等与否对信任者的人际信任倾向没有影响。可见,信任者权力更多是作为信任者自身的属性特征影响其人际信任,而不以双方权力层级不对等为前提。