四则混合运算规则的样例学习

采用有或无“运算步骤标记”两种样例和“交互式”样例呈现方式,对48名二年级小学生通过样例学习四则混合运算规则进行了实验。结果表明,多数被试可以通过样例学会“小括号”和“中括号”四则混合运算规则,但多数被试难以学会“无括号”四则混合运算规则;运算步骤标记对学习“无括号”运算规则的促进作用明显,但对学习“小括号”运算规则的促进作用不明显;运算规则学习的难度不同,所需样例的数量也不同。     

论信用建设的社会保障机制

良好社会信用形成的非自发性和我国目前失信对市场经济健康发展的阻抑性 ,凸显了信用建设的必要性和迫切性。立足于信用环境的创设 ,我们认为 ,必须提出了信用建设的四大保障机制 :法治机制、监管机制、信息公开机制、教育机制 ,以促人们循善而为。     

医药代表问题及其法律规制

近年我国医药行业不断发展,其营销人员的数量也在膨胀,从而引发了药品购销中的一系列问题,而医药代表在其中扮演着重要角色。由此,“医药代表问题”已引起人们的反感;国家和医院也采取不少措施打击,但收效甚微。医药代表问题成为社会热点。分析医药代表问题的社会成因,提出法律规制,旨在促进这一行业健康发展。     

小学生代数运算规则的样例学习

采用完整或不完整样例,对180名六年级小学生用样例学习两种代数运算规则进行了实验研究。结果显示：多数被试难以学会“平方差”运算规则,只有少数被试学会了“完全平方和”运算规则;反馈对不完整样例的学习效果有促进作用;用不完整样例学习难度不同的规则,其效果不同;在无反馈条件下,完整样例的学习效果都好于不完整样例;在有反馈的情况下,只有删除一步运算步骤样例的学习效果比完整样例的学习效果好     

Moral Relativism and Majority Rule

A number of arguments against relativism are based on the concept of majority rule. Since, the arguments allege, on relativism moral truth is founded on majority opinion, relativism entails that (a) moral progress and reform are impossible, (b) propaganda, advertising, brainwashing, and high birth rates turn mistaken moral judgments into correct ones, (c) moral horrors, if enough people believe them acceptable, are not moral horrors at all, (d) finding out what’s right and what’s wrong is extremely easy, (e) moral reasoning is very different from what we normally take it to be, and (f) internal criticism of a moral code is impossible. These arguments get their due in this article, which first defines and explicates relativism and then exposes, explains, and criticizes the arguments. Especially important to understand about the relation between relativism and majority opinion is the notion of a convention. Accordingly, it is discussed at some length.     

汉语声调远距离规则的内隐学习及其迁移效应

内隐学习研究领域的一个重要问题是内隐学习获得的知识究竟是什么,即内隐学习获得的知识究竟是底层的抽象规则还是表面的特征.研究以汉语声调的远距离水平映射这一远距离规则为材料,通过对表面特征和底层规则之间的分离操作,在控制组块和重复结构等表面特征的条件下,探讨声调远距离规则的习得和迁移,结果发现被试能够内隐地习得和迁移汉语平仄声调的水平映射规则,证实了内隐学习确实能够获得底层的抽象规则,为内隐学习的抽象性问题提供了新的证据.     

Justice and peaceful cooperation

Justice is important, but so is peaceful cooperation. In this article, I argue that if one takes seriously the autonomy of individuals and groups and the fact of moral pluralism, a just system of cooperation cannot guarantee peaceful cooperation in a pluralistic world. As a response to this consideration, I develop a contractarian theory that can secure peace in a pluralistic world of autonomous agents, assuming that the agents who exist in this world expect that peaceful cooperation is the most beneficial form of interaction for them in the long run. The theory specifies the restrictions on the behavior of autonomous individual and collective agents that are indispensable for peaceful cooperation in a pluralistic world. In particular, I argue for the need of (i) a globally valid rule of conflict resolution to settle all intra- and inter-group conflicts that cannot be resolved locally, (ii) a world court to apply this rule in cases where local group authorities are inadequate to do so, and to serve as a final court of appeal, and (iii) a world police to enforce the rule.     

Updating: A psychologically basic situation of probability revision

The Bayesian model has been used in psychology as the standard reference for the study of probability revision. In the first part of this paper we show that this traditional choice restricts the scope of the experimental investigation of revision to a stable universe. This is the case of a situation that, technically, is known as focusing. We argue that it is essential for a better understanding of human probability revision to consider another situation called updating (Katsuno & Mendelzon, 1992 Katsuno, A. and Mendelzon, A. 1992. “On the difference between updating a knowledge base and revising it”. In Belief revision, Edited by: Gärdenfors, P. 183–203. Cambridge, , UK: Cambridge University Press. [Crossref] , [Google Scholar]), in which the universe is evolving. In that case the structure of the universe has definitely been transformed and the revision message conveys information on the resulting universe. The second part of the paper presents four experiments based on the Monty Hall puzzle that aim to show that updating is a natural frame for individuals to revise their beliefs.