汉字字谜任务中限制解除的电生理机制

尽管“限制解除”作为一种顿悟问题解决的关键途径早在上世纪90年代就被德国心理学者Knoblich及其同事提出, 但学界对于“限制解除”所包含的信息加工程序、阶段以及相应的脑认知过程却并未有进一步的探讨和细化。本文从“限制解除”的理论角度出发, 以答案提示催化的“诱发式”字谜解决顿悟为例, 首次提出了一个关于“诱发式”限制解除过程的信息加工阶段初步构想。该构想认为：顿悟问题解决中的“诱发式”限制解除过程包含3个不同的信息加工阶段。第一阶段是以早期注意参与为特征的冲突信息的预警或预处理过程; 第二阶段是以新旧思路交替为特征的关键限制解除过程, 鉴于这个过程以基本问题表征空间的拓展为特征, 因此我们推测右脑的活动很有可能在这个过程中占据主导地位; 第三阶段是以自上而下的控制加工为特征的重新整合过程。脑电研究数据部分地支持了本研究的假设, 发现了上述第一阶段在脑电变化上体现为顿悟性限制解除所伴随的N100/P200复合体; 第二阶段体现为P300在300~400 ms的时间窗内的地形图分布及差异波; 而第三阶段则体现为N400在400~800 ms内的变化。脑电结果还证实：在第二阶段也就是限制解除的关键阶段, 右脑的活动明显强于左脑, 提示基本问题空间的拓展可能更多地依赖于右脑, 而在第三阶段也就是信息的重新整合阶段则表现出相反的半球偏侧化倾向。上述发现有可能为进一步认识和理解顿悟中“限制解除”的脑认知机理提供了新的见解。     

Interplay of Biomechanical Constraints and Kinematic Strategies in Selecting Arm Postures

In this study, the authors examined the interplay between biomechanics and control strategies in the resolution of excess degrees of freedom at the joint level. Seven participants made aimed arm movements from 30 starting points and several starting postures to targets. Final arm postures for movements to a target exhibited substantial joint angle variation. Through regression modeling and by comparing observed final arm postures with biomechanically plausible postures, the authors identified 3 kinematic strategies: (a) Maintain deviations from the average angle at the starting point to the joint's final posture; (b) make torso rotations that are a fixed proportion of shoulder rotations; and (c) adopt a characteristic combination of 4 wrist-positioning approaches. The results demonstrated that kinematic strategies can account for substantial variance in final arm postures, if one takes into account 2 types of individual differences—those that arise inevitably from biomechanical constraints and those that reflect choices in movement strategy.     

Reducing the Gap in Reading Performance Between Israeli Lower- and Middle-Class First-Grade Pupils

This study investigated the impact of prompting to achieve a faster reading rate on the reading performance of 100 Israeli first-grade students from lower- and middle-class backgrounds. In both groups, reading comprehension and decoding skills improved under the fast-pace condition. However, the children from lower socioeconomic backgrounds showed the greatest degree of overall improvement. Having scored significantly lower at self-pace, disadvantaged pupils nearly attained the level demonstrated by advantaged children when reading at the faster pace. The enhanced reading skills exhibited under accelerated speed are explained.     

Creativity,perversion and the violations of expectations

Abstract

Violations of expectations provide a motive for both creativity and perversion. The term “violations of expectations,” derived from empirical studies of early development, includes surprise, shock, betrayals of trust, as well as the possession of extraordinary talents. In the creative area, violations of expectations are illustrated through aspects of the life and work of Marc Chagall and Richard Wagner, and in perversion through the lives and actions of serial killers.

Lachmann FM. Kreativität, Perversion und die Verletzungen von Erwartungen

Verletzungen von Erwartungen liefern ein Motiv für beides: Kreativität und Perversion.Diese Benennung, aus empirischen Untersuchungen früher Entwicklung abgeleitet, schließt sowohl Überraschung, Schock, Verrat von Vertrauen ein wie auch die Verfügung über außergewöhnliche Talente. Im kreativen Bereich werden Verletzungen von Erwartungen durch Aspekte von Leben und Werk von Chagall und Richard Wagner illustriert und im Bereich der Perversionen durch Leben und Aktionen von Serien-Mördern.

Lachmann FM. Creatividad, perversión y violación de las expectativas.

La violación de las expectativas provee un motivo para ambas, la creatividad y la perversión. Este término, derivado de estudios empíricos sobre el desarrollo temprano, incluye sorpresa, shock, revelación de la verdad, así como la posesión de talentos extraordinarios. En la creativa violación de expectativas se ilustran aspectos de la vida y del trabajo de Marc Chagall y Richard Wagner y en la perversión a través de sus vidas y acciones de asesinos en serie.     

So why can’t you intend to drink the toxin?

In this paper I revisit Gregory Kavka’s Toxin Puzzle and propose a novel solution to it. Like some previous accounts, mine postulates a tight link between intentions and reasons but, unlike them, in my account these are motivating rather than normative reasons, i.e. reasons that explain (rather than justify) the intended action. I argue that sensitivity to the absence of possible motivational explanations for the intended action is constitutive of deliberation-based intentions. Since ordinary rational agents display this sensitivity, when placed in the toxin scenario they will believe that there is no motivational explanation for actually drinking the toxin and this is why they can’t form the intention to drink it in the first place. I thus argue that my Motivating-Explanatory Reason Principle correctly explains the toxin puzzle, thereby revealing itself as a genuine metaphysical constraint on intentions. I also explore at length the implications of my account for the nature of intention and rational agency.     

Autonomy,Sanity and Moral Theory

The concept of autonomy plays atleast two roles in moral theory. First, itprovides a source of constraints upon action:because I am autonomous you may not interferewith me, even for my own good. Second, itprovides a foundation for moral theory: humanautonomy has been thought by some to producemoral principles of a more general kind.This paper seeks to understand what autonomyis, and whether the autonomy of which we arecapable is able to serve these roles. We wouldnaturally hope for a concept of autonomy thatis value-neutral rather than value-laden. Thatis to say, we would want the judgement that Iam autonomous to depend wholly on, say,structural features of my psychology, and in noway to require us to make ethical judgements, orother value judgements. Being value-neutral isperhaps desirable in a concept of autonomyserving the first role, and plausiblyindispensible in one playing the second. Ishall argue, however, that value-neutral conceptionsof autonomy are impoverished and out of linewith our intuitions; set out and defendan explicitly value-laden conception ofautonomy; and explore the implications of such a view for theability of autonomy to play the rolesmentioned above.     

Take-the-best and the influence of decision-inconsistent attributes on decision confidence and choices in memory-based decisions

Take-the-best (TTB) is a decision strategy according to which attributes about choice options are sequentially processed in descending order of validity, and attribute processing is stopped once an attribute discriminates between options. Consequently, TTB-decisions rely on only one, the best discriminating, attribute, and lower-valid attributes need not be processed because they are TTB-irrelevant. Recent research suggests, however, that when attribute information is visually present during decision-making, TTB-irrelevant attributes are processed and integrated into decisions nonetheless. To examine whether TTB-irrelevant attributes are retrieved and integrated when decisions are made memory-based, we tested whether the consistency of a TTB-irrelevant attribute affects TTB-users’ decision behaviour in a memory-based decision task. Participants first learned attribute configurations of several options. Afterwards, they made several decisions between two of the options, and we manipulated conflict between the second-best attribute and the TTB-decision. We assessed participants’ decision confidence and the proportion of TTB-inconsistent choices. According to TTB, TTB-irrelevant attributes should not affect confidence and choices, because these attributes should not be retrieved. Results showed, however, that TTB-users were less confident and made more TTB-inconsistent choices when TTB-irrelevant information was in conflict with the TTB-decision than when it was not, suggesting that TTB-users retrieved and integrated TTB-irrelevant information.