Operant hoarding: a new paradigm for the study of self-control.

In the first of four experiments, rats were exposed to a modified multiple continuous reinforcement-extinction schedule during 15-min daily sessions. In one condition (saves condition) with the cuelight on, a single lever press produced a food pellet, briefly extinguished the cuelight, and started a clock. Saves (additional lever presses with interresponse times less than 1 s) produced an additional food pellet, briefly extinguished the cuelight, and restarted the interresponse time clock. The cuelight was extinguished 1 s after the last lever press and remained off during a 10-s period of extinction, during which no food pellets were delivered. In the other condition (savings account condition), the contingencies were the same except that the cuelight was extinguished and was not reilluminated after the initial lever press, and the delivery of all food pellets in the reinforcement component was delayed until the onset of extinction. In both conditions, rats made saves, but mean saves (total saves divided by the number of reinforcement components) were slightly reduced in the savings account condition. In Experiment 2, using six equally spaced 15-min sessions per day on alternate days, saves were either followed immediately with food and brief cuelight offset (saves condition) or were not reinforced at all. Mean saves were much greater when saves were reinforced. In Experiment 3, during 5-min daily sessions, saves earned a single pellet (savings account condition) or a number of pellets equal to the ordinal number of the lever press (interest condition). Rats made fewer mean saves, with little change in the food rate, when saves earned interest. In Experiment 4, the rats earned all their food in the operant situation during 24 daily 5-min sessions, these separated by 55-min intersession intervals during which no food was available; otherwise, the conditions were the same as in Experiment 3. In Experiment 4, the shift to interest for saves led to an increase in mean daily mean saves (total daily mean saves divided by the number of daily sessions) as well as to an increase in the number of food pellets delivered in each session. The results are discussed in terms of self-control and behavioral economics.     

Participatory management: Maintaining staff performance in a university housing cooperative

To apply behavior analysis to normal adults in non institutional settings, we may have to encourage their participation in the design and implementation of behavioral technology. This study evaluates a technology by which the members of a student housing cooperative manage their own staff with a minimum of supervision by one of the program designers. This staff management system consisted of prompts, self-reports, spot checks, and contingent rent reductions. Six resident staff members performed substantially more of their assigned tasks when this system was used. In addition, the management system was acceptable to the members, was affordable, and maintained high levels of staff performance during a 5-year follow-up. Participation by the members in the design and implementation of this system appears to have been useful in helping the behavior analysts to develop an unusually durable management system.     

Representations of guidance counselors,psychologists, and psychoeducators regarding psychological assessment

IntroductionSocial representations related to collaborative/therapeutic and information-gathering assessment could explain some psychological assessment practices. However, no other study has attempted to examine the actual place of these models in psychological assessment practices.ObjectiveThe goal of this study was to examine the social representations of different groups of professionals with regard to their preferred approach to psychological assessment.MethodA latent profile analysis was conducted on a sample of licensed Canadian guidance counselors (n = 382), psychologists (n = 235), and psychoeducators (n = 97).ResultsResults revealed three psychological assessment profiles, which significantly differ in terms of a few social factors. Results also showed that some psychological assessment practices differ across profiles.ConclusionThis study provides a better understanding of psychometric instruments users’ approaches to assessment and the influence of social factors.     

合作学习认知研究综述

到20世纪末期,合作学习研究转向对其认知过程的分析,当前的研究将合作学习过程分成了两个阶段。第一阶段是个体知识建构阶段,在该阶段中,合作性理解监控过程是对心理模型的比较过程。第二阶段是合作性联合结构阶段,该阶段的研究主要集中在精制、商讨、冲突三个方面,这些研究对教学干预提供了重要的理论借鉴。     

心理契约:概念、理论模型以及最新发展研究

文章简要回顾了组织行为学中有关心理契约的系列研究,包括概念的提出,理论模型,分类及测量,探讨了该领域的主要理论体系及分歧、论辩焦点,对在新经济背景下心理契约的新变化．新发展以及相关研究做了阐述,并在最后对该领域理论发展的前景作了展望。     

关于全球伦理的哲学审思

全球化过程有两个基本方面：一是科学技术的发展,一是资本主义的发展。迄今为止的全球化过程是资本主义利用不断更新的科学技术来实现自己发展的过程,此过程的社会实质在于资本主义全球化——包括资本主义经济全球化和与之相适应的资本主义伦理全球化。然而,诸如反全球化浪潮之美的国际现象和国际事件表明,原来作为全球化之推动力量的资本主义,如今正在走向其反面,愈来愈成为全球化的阻碍力量了;而日益严重的全球性生态危机,更其表明资本主义再也不能按其固有的方式存在和发展了。因此,客观上要求变革现存的资本主义经济制度及其伦理——包括资本主义经济理性、人理性和科学理性。适应解决当今全球性生态危机的需要,一种新伦理——生态伦理正在形成之中,它有望最终演变为取代传统资本主义伦理的全球伦理。     

Effects of Media and Collaborative Distributed Information on Concept-Learning

1IntroductionSuchman,an anthropologist,argued that actionswere always situated in particular social and physi-cal circumstances[1].In this view actions emergefrom moment-by-moment interactions between ac-tors,and between actors and their environments.The social and environmental aspects of cognitionhave been stressed in Hutchins′work[2].He hadstudied relatively structured decision environments,for example ship navigation and aeroplane piloting.His conclusions are that cognition in such situa…     

Piketty,Marxian Political Economy,and the Law of the Falling Rate of Profit

This article examines two views about the capitalism that lies at the heart of modern industrial society. We owe to Marx and Piketty two large‐scale, hugely important, but very different studies of the nature of modern industrial capitalism. In Capital, Marx provides a complex analysis of the anatomy of modern industrial capitalism, which he regards not as stable but rather as over time unstable and tending toward internal collapse on several grounds, of which the most important is apparently the so‐called tendency of the falling rate of profit. The falling rate of profit supposedly threatens its continued existence. Piketty criticizes the latter view in the context of his theory of contemporary capitalism. The article suggests, first, that Marx's view of the falling rate of interest is empirically implausible but Piketty's rival claim is empirically plausible. Second, a successful transition from capitalism to communism on Marxian grounds is unlikely in practice. And finally, despite Marx's intentions, it is unlikely to realize itself in practice, and is in this respect a traditional theory.     

Political Economy of Conflict and Conflict Resolution Between Islam,the Arab World,and the West

The problem studied in respect to politico-economic turmoil in an uneasy world centers around conflicts in the Arab world and between Islam and the West. In this respect, the Arab political economy is deeply embroiled in a quagmire of complex factors that have deepened and are confounded by Western political, strategic, and economic interests in the region. To study the topic of the politico-economic future of the Arab world is to delve into the study of complex factors. The present scenario of war, dissensions, power conflict, and Western belligerence with elitist self interest in the region is an example of a more permanent representation of the complexity of power, Western belligerence, regional interests, and religious conflicts. With respect to the political economy of conflict and conflict resolution concerning the West there is the uneasy alliance that has been unjustifiably established between the Arab world and the West. The conflict in this case rages around the spectre of political power and governance within which the cultural, religious, and economic forces tie in to generate the global political economic disorder. Conflict resolution in this arena requires an understanding based on acceptance of epistemological perspectives that wrap up the diverse oppositional factors into a discursive and consensual learning global social contract. This article studies this case of Arab political economy as a study of conflict and conflict resolution between contending forces and reconstructive politico-economic possibilities between the Arab world and the West and between Islam, the Arab world, and Occidentalism.     

回忆任务对合作抑制和错误修剪的调节——情绪效价和编码水平的影响

前人在项目回忆条件的合作记忆研究中记录到明显的合作抑制和错误修剪,背景提取条件的相关研究尤显不足;同时,情绪效价和编码水平对两类现象调节的研究尚未涉及。为此,本文在两个实验中采用经典合作记忆研究范式,以不同情绪效价的词汇为实验材料并以词汇在学习阶段的呈现颜色为背景展开研究。实验1和实验2分别在学习阶段采用了深编码和浅编码任务,回忆阶段则均含项目回忆(回忆已学词汇)和背景提取(回忆词汇在学习阶段的呈现颜色)两种任务。采用深编码条件的实验1的结果显示,项目回忆比背景提取条件的合作抑制更强、错误修剪更弱,回忆任务与词汇情绪效价交互影响合作抑制强度;采用浅编码条件的实验2则发现错误修剪在两种任务间的差异不显著。两实验的联合分析显示,回忆任务与编码水平交互影响合作抑制和错误修剪强度。上述结果表明:回忆任务对合作抑制和错误修剪的调节支持双重加工模型;回忆任务与情绪效价对合作抑制强度的交互影响支持权衡说,且与双重加工模型相吻合;回忆任务与编码水平交互影响合作抑制和错误修剪强度。