Context affects the interpretation of low but not high numerical probabilities: A hypothesis testing account of subjective probability

Low numerical probabilities tend to be directionally ambiguous, meaning they can be interpreted either positively, suggesting the occurrence of the target event, or negatively, suggesting its non-occurrence. High numerical probabilities, however, are typically interpreted positively. We argue that the greater directional ambiguity of low numerical probabilities may make them more susceptible than high probabilities to contextual influences. Results from five experiments supported this premise, with perceived base rate affecting the interpretation of an event’s numerical posterior probability more when it was low than high. The effect is consistent with a confirmatory hypothesis testing process, with the relevant perceived base rate suggesting the directional hypothesis which people then test in a confirmatory manner.     

红色的心理效应:现象与机制研究述评

红色是自然界和人类社会最常见的颜色之一,它对人类心理与行为的影响受到心理学家的关注.2005年发表在Nature上关于红色队服增强奥运选手竞赛成绩的研究报告,引发了一系列红色心理效应研究.本文从生理指标、行为观察、认知、语言文化、情绪、态度等多个角度综述了红色心理效应的现象和机制,并提出“情境假说”来解释红色对心理与行为的影响.综述表明,红色的心理效应缘于其在不同情境下联结着不同的心理意义.这些联结受先天遗传和后天环境的共同影响.红色与心理意义的联结诱发了特定的心理状态,从而影响个体的心理与行为.颜色对心理的影响及其机制,已经成为颜色科学基础与应用研究的前沿领域之一.     

短期习得的语言范畴使成人大脑右半球颜色范畴知觉转为左半球颜色范畴知觉

本研究探讨了色词与颜色重组训练能否让被试习得与真实情境相似的色词与颜色范畴联结, 并引起相应的偏侧化颜色范畴知觉, 从而进一步揭示语言编码对颜色范畴知觉的影响。采用六种蓝色作为材料。B1与B2为先前研究的两种蓝色。B11和B12, B21和B22分别为使B1, B2变浅和变深所得, 四者是连续的蓝色。训练被试分别用“duān”和“kěn”命名B1和B2。由于被试可能习得色词与颜色范畴的联结, 因此B12与B21为可能变范畴间颜色, B11和B12, B21和B22为可能变范畴内颜色。训练前后分别让被试完成一个视觉搜索测验。结果发现：前测中可能变范畴间颜色的辨别优于可能变范畴内颜色, 且在左视野呈现时更显著; 后测中可能变范畴间颜色的辨别同样优于可能变范畴内颜色, 但在右视野呈现时更显著。这提示：(1)人们在知觉同一语言范畴的不同颜色时可能会区分深浅范畴, 并因此引发右半球颜色范畴知觉; (2)短期习得的语言范畴能引起偏左半球颜色范畴知觉, 且使右半球颜色范畴知觉转为左半球颜色范畴知觉; (3)被试在训练中习得了色词与颜色范畴的联结; (4)范畴学习可以在仅学习一个样例的条件下自动发生。     

药物成瘾理论的新进展

成瘾过程伴随着一系列脑机能和心理机能的改变,但对药物滥用如何导致这些改变以及它们如何诱发成瘾却存在着不同的解释。近年来,由于认知心理学和认知神经科学研究技术在该领域的应用,研究者对药物成瘾过程的认知机能及其脑机制获得了新的认识,且基于对负性生活事件及外部压力在维持药物滥用及诱发复吸行为中的作用的测量学研究和动物实验研究而提出的成瘾理论为该领域的研究开辟了新的思路。本文重点评述了药物成瘾的认知加工模型和以压力或负性情绪为核心的相关理论模型及其研究,并提出进一步研究的方向。     

From the Terrible Loneliness to the Wonderful Agreement of Human Beings

What would be the “terrible loneliness” and what would be the “wonderful agreement” in the present paper? The “terrible loneliness” is the only reality that a person perceives and/or thinks during the now going on. For the person, an enormous quantity of occurrences is in the present moment absent. A very small quantity of occurrences is present. The person is the only being in having this. And, this is only during a little moment. The person never thinks about his loneliness in this moment. On the contrary, he thinks he is plenty of people and full of occurrences. But, if he were thinking about reality, he would live in a terrible loneliness. How does he escape himself from this loneliness? He thinks that the probable occurrences are real occurrences. He may be right in a plenty of times. Going through what I call opening hypotheses—basic hypotheses and non-basic but important hypotheses—and going through what I call simply hypotheses he is able to sanction a wonderful agreement of human beings about the known parts of the Universe. However, they are hypotheses, not absolute realities.     

作为社会和文化情境的同伴圈子对儿童社会能力发展的影响

基于同伴圈子的相似性假设探讨同伴圈子的形成、圈子社会情境对儿童社会能力发展的促进作用, 以及圈子文化背景对圈子社会化过程的调节作用。选取某城乡结合部一小学3至5年级898名儿童作为被试进行一年的跟踪调查, 其中在第一年当地城市儿童占36.5%, 当地农村儿童占48.8%, 流动儿童占10.4%。学生在第一和第二年都完成《班级戏剧》和《社会认知地图》问卷。研究结果表明：(1)在个体层面上, 圈子成员的社交性、亲社会性、自主性以及同伴接纳显著高于孤立者。城市儿童的自主性显著高于农村和流动儿童, 后两者之间则无显著差异。亲社会性在性别和文化背景方面存在显著的交互作用。(2)儿童会依据社会能力的相似性来组成同伴圈子, 且不同圈子之间存在显著差异。儿童也愿意与不同文化背景的同伴交往, 形成不同类型社会文化背景的同伴圈子。(3)儿童的社交性和自主性随着同伴圈子相应能力的提高而呈正向发展趋势。(4)同伴圈子对个体社交性和自主性发展的影响因圈子所注重的社会文化准则的差异而有所不同。农村－城市圈子比农村－流动圈子对儿童社交性发展的影响明显更大些; 农村圈子的儿童自主性水平更趋于随圈子自主性的提高而正向发展。     

Towards refinement of abductive or inductive hypotheses through propagation

In this paper we address the problem of distributed sources of information, or agents, that observe the environment locally and have to communicate in order to refine their hypothesis regarding the actual state of this environment. One way to address the problem would be to centralize all the collected observations and knowledge, and to centrally compute the resulting theory. In many situations however, it would not be possible to adopt this centralized approach (e.g. for practical reasons, or privacy concerns). In this paper, we assume that agents individually face abductive or inductive tasks in a globally coherent environment, and we show that general mechanisms can be designed that abstractly regard both cases as special instances of a problem of hypothesis refinement through propagation. Assuming that agents are equipped with some individual revision machinery, our concern will be to investigate how (under what conditions) convergence to a consistent state can be guaranteed at more global levels: (i) between two agents; (ii) in a clique of agents; and (iii) in general in a connected society of agents.     

Estimation of the hypothesis hierarchy in probabilistic inference tasks*

Is there a hierarchical order among the hypotheses about functional rules in probabilistic inference tasks, i.e. what is the construction and the procedure of the “hypothesis sampling mechanism” employed by the subjects in this kind of task? According to the hypothesis sampling model initially proposed by Brehmer (1974) there should be a hierarchical order among the hypotheses in the subject's hypothesis pools. The procedures of hypothesis sampling and testing ought to follow this strict data independent order (see e.g. Sniezek, 1986; Brehmer, 1987). Knez (1991a, b) showed, however, that this assumption may be incorrect. As a follow up to these results the question regarding the construction of the subject's hypothesis pools was reapproached in the present study. The results indicated a consistency with the hierarchical assumption (Brehmer, 1974) only regarding the relation between the linear and nonlinear rules but not within these types of rules.     

A case study of an English-Japanese bilingual with monolingual dyslexia

We report the case of AS, a 16 year-old English/Japanese bilingual boy, whose reading/writing difficulties are confined to English only. AS was born in Japan to a highly literate Australian father and English mother, and goes to a Japanese selective senior high school in Japan. His spoken language at home is English. AS's reading in logographic Japanese Kanji and syllabic Kana is equivalent to that of Japanese undergraduates or graduates. In contrast, his performance in various reading and writing tests in English as well as tasks involving phonological processing was very poor, even when compared to his Japanese contemporaries. Yet he has no problem with letter names or letter sounds, and his phoneme categorisation is well within the normal range of English native speakers. In order to account for our data that show a clear dissociation between AS's ability to read English and Japanese, we put forward the ‘hypothesis of granularity and transparency'. It is postulated that any language where orthography-to-phonology mapping is transparent, or even opaque, or any language whose orthographic unit representing sound is coarse (i.e. at a whole character or word level) should not produce a high incidence of developmental phonological dyslexia.