想象未来的认知加工成分及其脑网络

合理预期和想象未来事件或场景, 有利于个体做出适应性反应, 促进生存与发展。近年来, 研究者对想象未来的认知加工成分和神经机制进行了深入探讨, 提出了想象未来的相关概念和理论。我们首先概述了想象未来实验常用的思维采样范式和词语-线索范式, 接着介绍了想象未来的自我参照加工、心理场景构建等认知加工成分。此外, 特别介绍了想象未来的默认网络模型以及与之相关的其他大尺度脑网络, 并进一步提出了想象未来的脑网络研究框架。未来的研究可从想象未来的动态脑网络、复杂脑网络以及与疾病的关系等角度入手, 深入探究想象未来的神经机制。     

Rats’ anticipation of current and future trial outcomes in the ordered RNR/RNN serial pattern task

In the ordered RNR/RNN serial pattern task, rats often reduce their running speeds on trial 2 less within the RNR than within the RNN series. Initially, investigators (Capaldi, 1985; Capaldi et al., 1983) considered this trial 2 differential speed effect evidence for rats’ anticipation of inter-trial outcomes within each series. Later findings, however, suggest that this effect reflects some generalization of the ordinal position of trial 3 (Burns et al., 1986) or its similar runway cues during trial 2 (Capaldi et al., 1999). To test these generalization hypotheses, we made trial 2 more distinct from trial 3 in each series by forcing rats to alternate runways in a T-maze only on the last trial rather than on trial 2 in each series in Experiment 1, or by forcing rats to alternate runways between trials rather than to run down the same runway on all trials within each series in Experiment 2. Although enhancing the distinctiveness between these trials reduced the trial 2 differential speed effect, extensive training failed to eliminate it. Therefore, this residual difference between trial 2 speeds could reflect rats’ anticipation of trial 3 outcomes during trial 2 as originally proposed by Capaldi (1985) Experiment 3 was designed to determine whether we could enhance rats’ final trial outcome expectancies during trial 2 by making different trial 2 choices distinctive cues for each trial 3 outcome. The trial 2 speed effect was greater when rats were forced to alternate over all trials only within one of the series than when they were sometimes forced to do so in either series. Post-training probe tests revealed that both series position and the relevant within-series runway events contributed to this enhanced anticipation of trial 3 outcomes.     

Talking About a Universalist World

The paper defends a combination of perdurantism with mereological universalism by developing semantics of temporary predications of the sort ’some P is/was/will be (a) Q’. We argue that, in addition to the usual application of causal and other restrictions on sortals, the grammatical form of such statements allows for rather different regimentations along three separate dimensions, according to: (a) whether ‘P’ and ‘Q’ are being used as phase or substance sortal terms, (b) whether ‘is’, ‘was’, and ‘will be’ are the ‘is’, ‘was’, ‘will be’ of identity or of constitution, and (c) whether ‘Q’ is being used as a subject or predicate term. We conclude that this latitude is beneficial, as it conforms with linguistic reality (i.e., the multiple uses actually in place) and also enables one to turn what is ordinarily perceived as a problem for universalist perdurantism viz., a commitment to all sorts of weird and gerrymandered temporally extended entities, into an advantage, for the richness in questions allows us to make sense of the many different readings of sentences of the same grammatical form.     

大学生对个人未来的规划和态度及其与抑郁的关系

采用青少年未来取向问卷(中文版)、Beck抑郁量表-Ⅱ对723名大学牛进行调查,考察大学生对未来的规划和态度及其与抑郁的关系.结果发现:大学生对个人未来教育、职业和婚姻/家庭的探索和投入水平处于中等程度以上,并对未来持积极乐观的态度;大学一年级处于对未来发展进行探索和投入的过渡阶段;男大学生对未来婚姻/家庭的投入更多、态度更乐观;大学生对未来主要发展任务的积极规划和乐观态度能够负向预测抑郁.     

青少年家庭义务感的研究

本研究采用家庭义务感问卷对711名高一和高三的城乡青少年进行了调查,考察当前青少年家庭义务感的基本特征.结果表明,(1)青少年总体上具有较强的家庭义务感;(2)农村青少年比城市青少年更为重视“未来对家庭的支持”;女青少年比男青少年更重视当前与未来对家庭的支持,以及对家人的尊敬;独生与非独生青少年的家庭义务感无显著差异;(3)在“当前对家庭的支持”与“未来对家庭的支持”方面,青少年的义务感高于他所感知到的父母的期望,但在“对家人的尊敬”上,青少年的态度与父母的期望间无显著差异.     

中医药学将走向何方

由于中医缺乏形态学,中医没有成熟的科学实验,中医的诊断很难标准化、客观化,理论逻辑的致命弱点,理论体系难以重构,所以中医药学在很长一段时间内将保留下来之后,随着中医药学的理论体系的缺陷无法克服,原有的中医药体系必然解体,其中有部分内容融入现代医学。中医药学的归宿就是逐渐融入现代医学。     

THINKING TOWARD A FUTURE

Abstract. Ian Harbour's Ethics in an Age of Technology provides an indispensable overview of the field of ethics and technology—an overview that gives balanced views informed by science, philosophy, and religion and that provides encyclopedic coverage of a variety of issues and methods typical to them. Barbour makes communication possible between two fields often at odds in our culture. Part 2 of the book relates the values introduced in Part 1 to three specific areas of technology: agriculture, energy, and computers. The book pays superficial attention to gender issues. Its focus is on planet Earth; the universe and models of the future are only implicit.     

Planning, motivation, and evaluation in orientation to the future: A latent structure analysis

The paper presents a model of orientation to the future in terms of three processes; motivation, planning, and evaluation. To test this model a total of 154 11-, 15- and 18-year-old adolescents were interviewed about their goals and hopes for the future. Seven observed variables were estimated and a model including three latent constructs was tested using the LISREL VI computer program. The planning construct consisted of the amount of knowledge, the complexity of plans and their level of realization. The evaluation construct included internality, estimation of the likelihood that the goals would be realized and an overall emotional evaluation of the future. The motivation construct consisted of one observed variable, extension. Confirmatory factor analysis showed that the model fitted the data, thus providing support for the theoretical model.     

Forget about the future: effects of thought suppression on memory for imaginary emotional episodes

Whether intentional suppression of an unpleasant or unwanted memory reduces the ability to recall that memory subsequently is a contested issue in contemporary memory research. Building on findings that similar processes are recruited when individuals remember the past and imagine the future, we measured the effects of thought suppression on memory for imagined future scenarios. Thought suppression reduced the ability to recall emotionally negative scenarios, but not those that were emotionally positive. This finding suggests that intentionally avoiding thoughts about emotionally negative episodes may inhibit representations of those memories, progressively reducing their availability to recall.     

Past tense formation and comprehension of passive sentences in Parkinson's disease: evidence from Greek

The present study investigates the production of regular and irregular verbs in the past tense and the comprehension of passive sentences by Greek-speaking PD patients, and compares their behavior to that of normal speakers. Although the two groups manifest large scale differences at all the above constructions, the behavior of PDs is not different at regular vs. irregular past tense formation neither did we obtain strong evidence that they do not comprehend passives, most importantly, they certainly do not perform at chance. On the basis of the above, we conclude that there are no indications for a clearly linguistic deficit of the PD group, hence, their difference with the control group should be attributed to other factors, such as the computational demands of the tasks.