双任务情境下心理旋转的并行加工机制

采用心理不应期研究范式,三个反应时实验检测了心理旋转任务和其他认知操作任务能否并行加工的问题。在每个实验中要求被试快速、系列地完成对高低音的辨别任务(T1)和不同旋转角度的正反像辨别任务(T2),T1和T2呈现的时间间隔运用变化的SOA。结果发现：(1)T1的反应选择对T2的反应选择产生了很大的影响,在T2上PRP效应显著。心理旋转的操作成绩随着SOA的缩短而降低。(2)在T1上同样存在随着SOA缩短,反应时增加,正确率下降的趋势。T2的反应选择对T1的反应选择同样产生了显著的影响。(3)T2的反应选择对T1的中枢加工产生了相应的影响,表明当T1的反应选择占据中枢瓶颈时,心理旋转任务和其他认知操作任务在中枢瓶颈中并行得到了有效的加工     

浮现理论及其对第二语言获得年龄效应的新解释

近年来,来自认知行为实验、认知神经科学的研究结果对第二语言获的关键期假设提出了质疑。浮现理论对第二语言获得的年龄效应提出了新的解释,该理论认为在第二语言获得中并不存在先天决定的关键期,第二语言的获得年龄效应是由双语之间的相互作用、相互影响决定的,即第一语言的防守和第二语言同第一语言间的竞争两种机制决定着第二语言的获得的程度。     

Modality pairing effects and the response selection bottleneck

The present experiment examined the effects of input/output modality pairings on dual-task performance using the psychological refractory period (PRP) procedure. Four groups of participants performed two tasks composed of the same sets of inputs (visual and auditory) and the same sets of outputs (manual and vocal), but with different input/output modality pairings. Whereas modality pairings had only small effects on single-task reaction times, they had large effects on dual-task reaction times. The modality pairing effect cannot stem from differences in the difficulty of stimulus classification or response execution, because these task demands were the same across groups. The effect also does not appear to result from changes in stimulus-response compatibility. The present findings suggest dual-task interference arises not only from postponement of central operations (due to a central bottleneck), but also from a slowing of central operations whose magnitude is sensitive to the input/output modality pairings.     

On the Origins of Critical Realism

Critical realism has been used in connection with different epistemological positions. The article reviews its different uses in German, American, and British philosophy and examines its relation to Barbour's introduction of the term in the science and theology debate. The result is that there is a close connection to scientific realism, but not to philosophical critical realism in a narrower sense. Critical realism is a type of realism defining the term in Kant's sense as related to the question of the existence of the tempospatial world. It distinguishes itself as a middle way between naïve realism and other extremes.     

胚胎期可卡因、吗啡暴露影响子代成瘾相关行为的神经发育机制

孕期使用毒品可影响胎儿大脑的正常发育,导致脑内神经递质系统异常以及行为的改变.近年来不断有研究证据提示,胚胎期接触可卡因、吗啡等成瘾药物,可以影响神经细胞的增殖、迁移或凋亡等发育过程,使中脑皮层边缘系统中多巴胺、GABA、谷氨酸等神经元形态、受体功能以及突触可塑性发生改变,从而导致子代的学习记忆和成瘾易感性等行为异常.本文将从行为、神经发育、递质系统以及脑功能等层面归纳胚胎期用药对成瘾相关行为影响机制的重要研究进展,并试图提出可能的研究展望.     

Suffering Injustice: Misrecognition as Moral Injury in Critical Theory

Abstract

It is the persistence of social suffering in a world in which it could be eliminated that for Adorno is the source of the need for critical reflection, for philosophy. Philosophy continues and gains its cultural place because an as yet unbridgeable abyss separates the social potential for the relief of unnecessary human suffering and its emphatic continuance. Philosophy now is the culturally bound repository for the systematic acknowledgement and articulation of the meaning of the expanse of human suffering within technologically advanced societies that are already committed to liberal ideals of freedom and equality.     

围手术期血糖控制

糖尿病患者围手术期血糖控制是临床糖尿病处理的一大难题,围手术期血糖控制状况对术后病死率及感染等并发症有重要影响。良好的血糖控制可以改善患者预后,但严格控制血糖也会增加低血糖和多项不良事件发生的风险。目前对围手术期血糖控制的目标尚无统一标准,缺乏充分的前瞻性对比研究和循证证据。本文作者对近几年关于围手术期血糖控制相关文献...     

(De)colonizing Culture in Community Psychology: Reflections from Critical Social Science

Since its inception, community psychology has been interested in cultural matters relating to issues of diversity and marginalization. However, the field has tended to understand culture as static social markers or as the background for understanding group differences. In this article the authors contend that culture is inseparable from who we are and what we do as social beings. Moreover, culture is continually shaped by socio-historical and political processes intertwined within the globalized history of power. The authors propose a decolonizing standpoint grounded in critical social science to disrupt understandings of cultural matters that marginalize others. This standpoint would move the field toward deeper critical thinking, reflexivity and emancipatory action. The authors present their work to illustrate how they integrate a decolonizing standpoint to community psychology research and teaching. They conclude that community psychology must aim towards intercultural work engaging its political nature from a place of ontological/epistemological/methodological parity.     

Effects of practice on task architecture: combined evidence from interference experiments and random-walk models of decision making

Does extensive practice reduce or eliminate central interference in dual-task processing? We explored the reorganization of task architecture with practice by combining interference analysis (delays in dual-task experiment) and random-walk models of decision making (measuring the decision and non-decision contributions to RT). The main delay observed in the Psychologically Refractory Period at short stimulus onset asynchronies (SOA) values was largely unaffected by training. However, the range of SOAs over which this interference regime held diminished with learning. This was consistent with an overall shift observed in single-task performance from a highly variable decision time to a reliable (non-decision time) contribution to response time. Executive components involved in coordinating dual-task performance decreased (and became more stable) after extensive practice. The results suggest that extensive practice reduces the duration of central decision stages, but that the qualitative property of central seriality remains a structural invariant.