Pandora: A Reasoning Toolbox using Natural Deduction Style

Pandora is a tool for supporting the learning of first ordernatural deduction. It includes a help window, an interactivecontext sensitive tutorial known as the "e-tutor" and facilitiesto save, reload and export to LATEX. Every attempt to applya natural deduction rule is met with either success or a helpfulerror message, providing the student with instant feedback.Detailed electronic logs of student usage are recorded for evaluationpurposes. This paper describes the basic functionality, thee-tutor, our experiences of using the tool in teaching and ourfuture plans.     

时序知觉的启动效应

时序知觉中的启动效应是指被启动的刺激被知觉为先于未启动刺激出现。文章综述了时序知觉启动效应的有关理论解释和影响因素,并对现有研究存在的问题及未来研究的方向进行了讨论。     

儒家差异思想阐微

Difference is a category of relationship lying between identity and non-identity, and equality and inequality. This concept is both the Confucian reflection of the real relationship between things in the world and the value ideal of Confucianism. The Confucian idea of difference, embodied in the view of human relationships, of world, and of nature, seeks to build a rational order based on difference, so as to reach a harmonious, united and ideal state. Confucians in the past dynasties continually interpreted difference and raised it to the level of ontology, enriching the system of Confucianism. Translated by Yan Xin from Zhexue Yanjiu 哲学研究 (Philosophical Studies), 2006, (3): 32–37     

The effect of on‐ or off‐line extinction of a first‐order conditioned stimulus on a second‐order conditioned response in rats

In a water‐licking experiment with rats, the effects of the extinction of a first‐order conditioned stimulus (CS1) on the suppression of licking established for a second‐order conditioned stimulus (CS2) were explored. Extinction of the first‐order conditioned response (CR1) attenuated the conditioned suppression induced by CS2 when the rats had been allowed to lick water during the CR1 extinction phase. However, if water had been unavailable during the CR1 extinction phase, suppression by CS2 was not affected. The latter result is consistent with other studies of rats' conditioned suppression and suggests that the underlying mechanism of second‐order conditioning in this experiment is a connection between CS2 and the response elicited by CS1 rather than a CS2‐CS1 connection. The former result was interpreted as the CR1 extinction phase encouraging the rats to lick water despite the fear elicited by CS1, and thus, in testing, they licked despite the fear elicited by CS2.     

提取诱发遗忘：项目强度与测试顺序的影响

提取诱发遗忘是指对先前学过的部分材料进行提取练习会使与练习材料相关的其它材料发生遗忘。目前该现象存在抑制与非抑制理论之争。本研究以64名大学生为被试,通过考察项目强度和测试顺序对提取诱发遗忘的影响,对上述争论进行了探讨。结果表明：（1）只有高强度项目才会引发提取诱发遗忘;（2）当控制由测试顺序所产生的输出干扰效应后,高强度项目仍然会引发提取诱发遗忘。本研究结果支持了提取诱发遗忘的抑制理论。     

现代社会伦理秩序的发生路径

“自发生成论”和“理性创设论”是传统道德哲学关于社会伦理秩序生成的两种理论模式。“自发生成论”认为,伦理道德不是纯粹人类理性设计的产物,而是人类行为实践的自然结果;“理性创设论”认为,伦理道德是人类自觉建构的结果,是人类理性创设的产物。这两种理论模式都以抽象的人性为其理论基础,无法合理解释个体与类之间的伦理关系。基于现实伦理实体的“创生拓展”应成为现代社会伦理秩序的发生路径。     

Internet‐based self‐tailored deposit contracts to promote smoking reduction and abstinence

Deposit contracting may reduce costs and increase efficacy in contingency management interventions. We evaluated two Internet‐based deposit contract arrangements for smoking. In Experiment 1, nine participants deposited self‐selected amounts that could be earned back for meeting goals. During treatment, participants were reimbursed for breath samples with less than or equal to 6 parts per million carbon monoxide and met the criterion for 47% of samples compared to 1% during baseline. In Experiment 2, 10 participants’ deposits were matched up to $50. No samples met the criterion during baseline but 41.5% met it during treatment. The average deposit was $82 in Experiment 1 and $49 in Experiment 2. Participants rated the intervention favorably and sample submission rates were high. These experiments suggest that Internet‐based self‐tailored deposits are acceptable, feasible, and can promote brief reduction and abstinence in some smokers. Future research should investigate individual and intervention factors that affect long‐term cessation and uptake of deposit contracts.     

Allocation of speech in conversation

In a replication and extension of Conger and Killeen's (1974) widely cited demonstration of matching in conversations, we evaluated nine participants’ allocation of speech and gaze to two conversational partners. German speakers participated in two 90‐min sessions in which confederates uttered approval on independent variable‐interval schedules. In one of the sessions, confederates uttered approval contingent upon and contiguous with eye contact whereas in the other session approval was uttered independent of the participant's gaze. Several measures of participants’ verbal behavior were taken, including relative duration and rate of speech and gaze. These were compared to confederates’ relative rate of approval and relative duration and rate of talk. The generalized matching equation was fitted to the various relations between participants’ behavior and confederates’ behavior. Conger and Killeen's results were not replicated; participants’ response allocation did not show a systematic relation to the confederates’ relative rate of approval. The strongest relations were to overall talk, rather than approval. In both conditions, the participant talked more to the confederate who talked less—inverse or antimatching. Participants’ gaze showed the same inverse relation to the confederates’ talk. Requiring gaze to be directed toward a confederate for delivery of approval made no difference in the results. The absence of a difference combined with prior research suggests that matching or antimatching in conversations is more likely due to induction than to reinforcement.