A Semantics for Means-end Relations

There has been considerable work on practical reasoning in artificial intelligence and also in philosophy. Typically, such reasoning includes premises regarding means–end relations. A clear semantics for such relations is needed in order to evaluate proposed syllogisms. In this paper, we provide a formal semantics for means–end relations, in particular for necessary and sufficient means–end relations. Our semantics includes a non-monotonic conditional operator, so that related practical reasoning is naturally defeasible. This work is primarily an exercise in conceptual analysis, aimed at clarifying and eventually evaluating existing theories of practical reasoning (pending a similar analysis regarding desires, intentions and other relevant concepts). “They were in conversation without speaking. They didn’t need to speak. They just changed reality so that they had spoken.” Terry Pratchett, Reaper Man     

The Economic, Political, Strategic, and Rhetorical Uses of Simple Constructive Dilemma in Legal Argument

The author argues that simple constructive dilemma is a valuable argument form for reasoning under relative conditions of uncertainty. When applied to legal argument this value of simple constructive dilemma is shown in its political, strategic, rhetorical, and especially economic, uses by lawyers and judges. After considering some examples of the use of the form by trial lawyers, the author gives examples of the more interesting use of the form by appellate courts. Research into the use of simple constructive dilemma by appellate courts helps us to understand how those courts distribute judicial resources. It also helps us to understand the political role of the appellate courts with respect to the doctrine of the separation of powers. Given some of the specific examples of legal reasoning used by the appellate courts presented in this article, and given the discussion of the doctrine of precedent, the article’s focus is on common law legal systems of the Anglo-American-type.     

提示对3～11岁儿童解决类比推理问题的影响

随机抽取360名3~11岁儿童,采用几何图形、关系图形、词语、数字、故事五种材料,考察提示对儿童类比推理的影响。结果发现:(1)提示对3~4岁和8~9岁儿童几何图形类比推理成绩有影响;提示对3~4岁和9~11岁儿童词语类比推理成绩有影响;提示对3~11岁儿童数字类比推理成绩均有影响;提示对3岁和8~11岁儿童关系图形类比推理成绩有影响;提示对3~4岁和8~11岁儿童故事类比推理成绩有影响;(2)提示使原本不会类比推理的3岁儿童能够初步进行类比推理。     

比例推理的过度使用及其认知机制:一项发展性的负启动研究

从抑制控制模型出发,采用负启动范式探究过度使用比例推理的认知机制。研究包括3个实验,以小学生、中学生和大学生为被试,分别考察了抑制控制在解决缺值应用题、图片推理任务中的作用,以及数字比(整数比、非整数比)是否对抑制控制过程有影响。结果发现:小学生、中学生和大学生在两类实验任务中均出现了负启动效应,但负启动量不存在年级差异;在图片推理任务中,不同数字比类型下的负启动量具有显著差异。研究结果支持了抑制控制模型的观点,即成功解决问题不仅需要掌握问题的内在逻辑,更需要对不恰当策略进行抑制;在解决问题的过程中,无论是儿童、青少年还是成人都需要抑制控制的参与,三者在抑制控制效率上没有差异;数字比类型对抑制过程有影响,但仅限于图片推理问题。     

BEALER ON THE AUTONOMY OF PHILOSOPHICAL AND SCIENTIFIC KNOWLEDGE

Abstract: In a series of influential articles, George Bealer argues for the autonomy of philosophical knowledge on the basis that philosophically known truths must be necessary truths. The main point of his argument is that the truths investigated by the sciences are contingent truths to be discovered a posteriori by observation, while the truths of philosophy are necessary truths to be discovered a priori by intuition. The project of assimilating philosophy to the sciences is supposed to be rendered illegitimate by the more or less sharp distinction in these characteristic methods and its modal basis. In this article Bealer's particular way of drawing the distinction between philosophy and science is challenged in a novel manner, and thereby philosophical naturalism is further defended.     

道德困境之困境—— 情与理的辩争

道德判断是人类日常生活中必不可少的评价性活动之一, 但道德判断中情与理的作用争执不休。从休谟和康德的哲学论争到发展心理学家对道德推理的关注, 直至现代社会心理学家对情绪的重新审视, 道德判断的决策机制已经演变为多种模型相互竞争的局面。在回顾和分析道德判断各种理论的基础上, 阐述了情绪和推理在道德判断中的作用, 认为今后应当更多地关注道德推理的实际作用, 并当运用更为先进的操纵手段, 同时注重情境的影响来考察道德判断中情与理的问题。     

类比推理的认知过程与计算模型

该文主要论述了类比推理的认知过程及其计算模型。文章对类比推理的概念进行了分析,论述了类比推理的主要成分和认知过程,并进一步围绕类比推理的重要成分介绍了当前类比推理的主要实证研究及研究成果,在此基础上文章进一步概括了类比推理的主要计算模型。     

归纳推理属性效应中背景关系提取原则的探究

本实验以生态关系、类别关系和无关三类项目为推理背景, 以基因X和疾病Y为不同的推理属性, 通过考察实验材料快速或延迟呈现时对推理可能性和推理信心的影响来探究属性效应中背景关系提取的原则。结果发现实验材料快速和延迟呈现时对推理可能性无显著影响, 但对推理信心有显著影响, 快速呈现时被试的推理信心显著高于延迟呈现时。由此可以认为归纳推理属性效应中人们优先按照相关性原则提取背景关系, 同时该结果还表明属性效应既有跨文化的普遍性也有其文化特殊性。     

儿童信念─愿望推理的研究：争鸣与展望

儿童的信念─愿望推理是心理理论研究的主要内容。多年来,研究者对儿童信念─愿望推理的发展特征及其心理机制进行了大量研究,取得了一系列富有意义的结论。但迄今为止仍有许多问题存在争议,如：儿童究竟何时开始具有信念─愿望推理的能力？儿童在错误信念任务上从不正确到正确反应的转换机制是什么？儿童如何进行信念─愿望推理的加工？该文回顾与探讨了上述存在争鸣的问题,并在此基础上对该领域未来研究方向做了展望。     

Representation and Reasoning about Evolutions of the World in the Context of Reasoning about Actions

The first step in reasoning about actions and change involves reasoning about how the world would evolve if a certain action is executed in a certain state. Most research on this assumes the evolution to be only a single step and focus on formulating the transition function that defines changes between states due to actions. In this paper we consider cases where the evolution is more than just a single change between one state and another. This is manifested when the execution of an action may trigger execution of other actions, or when multiple agents act on the environment following certain strategies.