Associations between physical activity and proactive control and the modulating role of working memory

Accumulating evidence indicates positive associations between physical activity (PA) and cognitive control. Proactive control, the ability to maintain goal-relevant information in preparation of upcoming task demands, is a critical component of cognitive control. However, little research has examined the association between PA and proactive control. To address this issue, a total of 132 university students were recruited and divided into two groups based on reported regular PA during past week. All participants completed two common cognitive control tasks: the AX Continuous Performance Task (AX-CPT) and the Cued Task-Switching Paradigm (CTS). In comparison with the low PA group, the high PA group showed greater proactive control efficiency on both tasks. Moreover, proactive control indices significantly correlated between the two tasks for the high but not for the low PA group. Further, working memory significantly modulated the association between PA and proactive control efficiency of CTS. Although the present cross-section design does not allow us to test the causal relationship between PA and proactive control, these findings may have important implications for developing effective intervention strategies which aim to promote proactive control through increasing PA or to promote PA through increasing proactive control. Moreover, individual differences in working memory are important to consider when we aim to design such interventions.     

认知固执导致持续应激的认知与神经机制

认知固执(Perseverative Cognition, PC)是一种重复或长期的消极认知表征,既能够使用量表测量,也可以通过实验诱发。认知固执会导致持续应激反应,进而影响个体的身心健康。其导致持续应激反应的认知机制体现在个体难以识别安全信号,高认知固执个体会表现出低心率变异性的显著特征;在脑机制方面主要表现为前额叶的抑制控制功能失调、杏仁核与前扣带回的病理性改变以及前额叶-杏仁核的连接减弱。未来研究应深入探讨认知固执的影响因素以及干预措施,同时需要进一步分析内隐认知固执的测量方式及其对个体的影响。     

The relationship between sleep and working memory in children with neurological conditions

The objective of this study is to investigate whether sleep problems might account for the increased working memory deficits observed in school-aged children with neurological conditions. A novel, transdiagnostic approach to the investigation was chosen, and sleep is treated as a process that can potentially account for working memory difficulties across a range of neurological conditions. Prevalence estimates of sleep problems are also examined. Archival data of 237 children aged 6 to 11 years were collected from a Western Australian statewide neuropsychological service for the period 26 July 2011 to 14 January 2014. Measures of parent-reported sleep quality, snoring, and daytime sleepiness were obtained, in addition to objective measures of verbal and spatial working memory, storage capacity, and processing speed. The results of the data analysis reveal that over one third of participants reported having clinically-significant levels of sleep problems and that poor sleep quality is significantly associated with verbal working memory difficulties. This association remains after partialling out the variance contributed to performance by storage capacity and processing speed, suggesting that sleep is impacting upon an executive component of working memory. No other significant associations are observed. The results suggest that poor sleep quality is associated with an executive component of verbal (rather than spatial) working memory in children with neurological conditions. This has implications for the biological mechanisms thought to underlie the relationship between sleep and cognition in children. The results also demonstrate the clinical utility of a transdiagnostic approach when investigating sleep and cognition in children with neurological conditions.     

Theistic Dissonance Among Religious Jewish Holocaust Survivors: A Psychodynamic Perspective

Coining the term theistic dissonance to capture conflicted attitudes and feelings toward God, this article examines faith-based reactions to the Holocaust. The theological weltanschauung of religious Jewish Holocaust survivors is analyzed, with a particular focus on their attempts to reconcile the notion of a benevolent and caring God with their harrowing experience. Basic religious sources and contemporary literature are presented to elucidate the realm of resolutions of theistic dissonance. It is suggested that elements of defense mechanisms are adapted from the emotional into the cognitive realm, and are used by survivors to facilitate respective interpretations of God’s role during the Holocaust. Dissonance resolution is seen as being informed theologically and experientially for these victims who confronted stark challenges to their religious integrity.     

Social cognition,artefacts, and stigmergy revisited: Concepts of coordination

A number of different coordination concepts have been developed to explain how individual activities are coordinated on a social level, and the variety of concepts shows there is an interest in many domains to find such explanations. Stigmergy being one of them, has come to be increasingly applied on various kinds of human activities. In other domains we find other concepts for explaining how environmental resources contribute to work activities or how people use them to structure their work. This paper discusses different coordination concepts, including stigmergy, articulation work, coordination mechanisms, triggers, placeholders, and entry points. The first three concepts are explicitly concerned with coordination among several agents, while the last three instead concern individual activities, but arguably they can be extended to the social level. They also bring an explicitly cognitive dimension to coordination, which is not as salient in the former concepts. The concepts discussed here do have some similarities, but also important differences. They may not be interchangeable, but they could complement each other, or contribute to further elaboration of existing concepts. The stigmergic sign, e.g., could usefully be developed to recognise qualitative differences in its role as a coordination mechanism.     

A Social Psychological Approach to Enduring Rivalries

The recent scholarly work on the concept of enduring rivalries offers a promising way to examine strategic interaction among dyads of states over extended periods of time. A focus on rivalry, and on the mechanisms that provide for such interaction, may offer a way to bridge existing theories of international relations that rely exclusively on structure or process. Unfortunately, the potential for theory-building has not been fully realized because research into rivalry has tended to be inductive. This paper seeks to rectify that problem by situating the rivalry concept within a social psychological approach to international relations. The rivalry concept is appropriately located in a theoretical approach that views the international system as a social system where actors are conditioned by mechanisms of competition and socialization.     

绝对音高者对音乐的加工及其神经机制

绝对音高感是一种特殊的音高命名能力。通过论述绝对音高能力与音乐加工的关系,发现绝对音高者具有对音高、音程和旋律的加工优势,但他们对相对音高的加工存在劣势。同时,与非绝对音高者相比,绝对音高者大脑结构和功能都表现出特殊性。未来研究应进一步厘清音乐训练对绝对音高者音乐加工的影响。     

Defense mechanisms predict differential lifespan change in Self-control and Self-acceptance

Individual differences in the direction of personality change over a period of 40 years for two scales of the California Psychological Inventory (CPI: Gough & Bradley, 1996) - Self-control (Sc) and Self-acceptance (Sa) - as previously identified through the use of longitudinal hierarchical linear modeling (Jones, Livson & Peskin, 2003), were studied in a sample of men and women from the Institute of Human Development Intergenerational Studies. It was hypothesized that the use of defense mechanisms, as assessed by the Defense Mechanism Manual (DMM: Cramer, 1991a), would be differentially related to change in Sc and Sa, depending on whether participants were increasing or decreasing in that trait over time. Results indicated that for participants who decreased in Sa, the use of Denial was associated with less decrease. For participants who increased in Sc, the use of Identification was associated with less increase.     

进化心理学取向与当代心理学

进化心理学以进化论为理论基础,用适应的观点来解释人类的心理机制及其行为方式。本文通过阐明进化心理学的产生背景,重点论述了进化心理学的思维方式及其与心理学主要学科分支的联系,并指出了进化心理学对当代心理学发展的影响。     

前瞻记忆的干扰效应：多重加工的证据

通过2个实验,对背景任务时间充裕和紧迫两种情况下的具体事件意向、类别事件意向、时间点意向、时间段意向四种前瞻记忆任务对背景任务的干扰效应进行考察。结果表明,在背景任务时间充裕情况下,类别事件意向对背景任务有干扰效应,具体事件意向、时间段意向和时间点意向都没有前瞻干扰效应;在背景任务时间紧迫情况下,时间点意向产生了干扰效应,具体事件意向、类别事件意向、时间段意向均无干扰效应。结果支持前瞻记忆的实现依赖多重加工的观点,时间性前瞻记忆并不一定比事件性前瞻记忆产生更大的干扰。