Lack of correspondence between the reactive proactive questionnaire and the impulsive premeditated aggression scale among forensic psychiatric outpatients

The most studied bimodal classifications of aggressive behavior are the impulsive/premeditated distinction measured with the Impulsive Premeditated Aggression Scale and the reactive/proactive distinction measured with the Reactive Proactive Questionnaire. The terms of these classifications are often used interchangeably, assuming that reactive aggression is equivalent to impulsive aggression and that proactive aggressive behavior is the same as premeditated aggression. The correspondence or discrepancy between both aggression classifications/questionnaires, however, is understudied. Therefore, the current study investigated the correspondence between the RPQ and IPAS in a sample of 161 forensic psychiatric outpatients (FPOs) with severe aggressive behavior. Correlation analysis revealed a limited correspondence between the RPQ and IPAS. Cluster analyses derived three clusters from the RPQ as well as the IPAS: these clusters did not match in 60.3% of the cases. Furthermore, the notion that the RPQ measures trait aggression whereas the IPAS assesses state aggression could not be verified. The present study indicates that aggression subtypes as measured by use of the RPQ and IPAS correspond only partially and should not be used interchangeably. Furthermore, it was suggested that RPQ focuses more on actual aggressive behavior and the IPAS more on emotions and their regulation. Future research is needed to elucidate the applicability of both questionnaires in further detail.

     

Associations Between Proactive and Reactive Aggression and Risky Sexual Behavior Among Emerging Adults

This study examined associations between proactive and reactive aggression and types of risky sexual behavior. Additionally, gender was examined as a moderator of these associations. The sample included emerging adults (N = 232; male = 132) ranging from 18 to 25 years of age. Of the overall sample, 155 individuals (53.5% male) reported engaging in sexual intercourse. Proactive, but not reactive, aggression was uniquely associated with 4 types of risky sexual behavior (i.e., ever engaging in sexual intercourse, number of lifetime sexual partners, number of partners within past 3 months, and frequency of contraception use). Further, associations with number of sexual partners were strongest when levels of reactive aggression were low. With regard to gender differences, proactive aggression was associated with lower likelihood of contraception use in males. Gender also moderated the association between reactive aggression and number of lifetime sexual partners. Implications and future directions are discussed.     

The sunk cost effect across species: A review of persistence in a course of action due to prior investment

The sunk cost effect is the bias or tendency to persist in a course of action due to prior investments of effort, money or time. At the time of the only review on the sunk cost effect across species (Arkes & Ayton, 1999), research with nonhuman animals had been ecological in its nature, and the findings about the effect of past investments on current choice were inconclusive. However, in the last decade a new line of experimental laboratory‐based research has emerged with the promise of revolutionizing the way we approach the study of the sunk cost effect in nonhumans. In the present review we challenge Arkes and Ayton's conclusion that the sunk cost effect is exclusive to humans, and describe evidence for the sunk cost effect in nonhuman animals. By doing so, we also challenge the current explanations for the sunk cost effect in humans, as they are not applicable to nonhumans. We argue that a unified theory is called for, because different independent variables, in particular, investment amount, have the same influence on the sunk cost effect across species. Finally, we suggest possible psychological mechanisms shared across different species, contrast and depreciation, that could explain the sunk cost effect.     

自由基与蛛网膜下腔出血后脑血管痉挛的关系及防治策略

脑血管痉挛是蛛网膜下腔出血后的严重并发症之一,可引起脑组织严重缺血或迟发性缺血性脑损伤,甚至导致脑梗死,但其病理机制仍未完全清楚,而越来越多的研究表明自由基在脑血管痉挛病理变化过程中发挥着重要作用。通过对自由基与脑血管痉挛之间关系的科学分析,探讨蛛网膜下腔出血后与自由基相关的脑血管痉挛的防治策略。     

The Possibility of Meaning in Human Evolution

Science undermines the certitude of non-naturalistic answers to the question of whether human life has meaning. I explore whether evolution can provide a naturalistic basis for existential meaning. Using the work of philosopher Daniel Dennett and scientist Ursula Goodenough, I argue that evolution is the locus of the possibility of meaning because it has produced intentionality, the matrix of consciousness. I conclude that the question of the meaning of human life is an existentialist one: existential meaning is a product of the individual and collective tasks human beings undertake.     

5-13岁儿童对物种起源认知的发展

本研究采用临床访谈法,采用开放式和封闭式问题情境,测查了5-13岁儿童对物种起源认知的发展。结果显示儿童对物种起源的解释越来越符合科学的解释,这种认知发展过程并不是以一种起源认知替代另一种起源认知的过程,而是多种起源认知以某种方式共存于儿童的认知系统中。本研究结果既显示了儿童对物种起源认知发展的跨文化一致性,也体现了不同文化和宗教环境影响下的差异性。     

主动性和反应性认知控制的权衡机制及影响因素

主动性控制和反应性控制是认知控制研究的新视角。前者通过在反应前维持目标相关信息的表征来预防冲突, 后者在反应时重激活目标相关信息以解决冲突。个体能够在这两种认知控制间进行权衡从而形成最优反应。通过AX-CPT等实验范式, 辅以ERP、fMRI技术可分离两种认知控制, 并观察到认知控制相关的脑区在激活时间和强度上的差异。个体生理发展、认知因素(期望、流体智力、训练)、非认知因素(情绪、动机等)均能影响认知控制的权衡。未来的研究应多关注这一权衡的内在神经机制和认知机制, 并与传统认知控制研究相结合, 在理论和应用上取得更进一步的发展。     

What has fMRI told us about the Development of Cognitive Control through Adolescence?

Cognitive control, the ability to voluntarily guide our behavior, continues to improve throughout adolescence. Below we review the literature on age-related changes in brain function related to response inhibition and working memory, which support cognitive control. Findings from studies using functional magnetic resonance imaging (fMRI) indicate that processing errors, sustaining a cognitive control state, and reaching adult levels of precision, persist through adolescence. Developmental changes in patterns of brain function suggest that core regions of the circuitry underlying cognitive control are on-line early in development. However, age-related changes in localized processes across the brain, and in establishing long range connections that support top-down modulation of behavior, more effective neural processing for optimal mature executive function. While great progress has been made in understanding the age-related changes in brain processes underlying cognitive development, there are still important challenges in developmental neuroimaging methods and the interpretation of data that need to be addressed.     

肝移植术中氧代谢的平衡原则

接受肝移植术的患者往往处于危重状态,常规的血流动力学指标已不能全面地反映术中病人的状况,通过对氧供和氧耗以及氧摄取率等氧代谢指标的观测,根据氧代谢的平衡原则,将各项指标综合运用,能更有效地指导术中的麻醉管理。