专业社会工作介入社会性突发事件精神救助限制与突破

精神救助与物质救助一样.是社会性突发事件处置中一个当然的组成部分.在我国现实国情下,专业社会工作介入社会性突发事件精神救助在其理论研究与实践过程中都会暂时存在较难逾越的屏障.面对社会接受和专业自身发展所表现出来的诸多限制,专业社会工作要成功地介入社会性突发事件精神救助,发挥其优势作用,政府重视是前提,社会工作服务的本土化是根本,专业队伍建设是关键,积极行动是途径.     

对医院伦理委员会建设的几点认识

对20年来我国医院伦理委员会建设步伐不够大进行了反思,分析了存在的主要原因;阐述了对生物医学技术的实施进行伦理审查评价的必要性;对我国医院伦理委员会的建设提出展望,对医院伦理委员会工作发表了自己的认识.     

NMDA receptor blockade in the basolateral amygdala disrupts consolidation of stimulus-reward memory and extinction learning during reinstatement of cocaine-seeking in an animal model of relapse

Previous research from our laboratory has implicated the basolateral amygdala (BLA) complex in the acquisition and consolidation of cue-cocaine associations, as well as extinction learning, which may regulate the long-lasting control of conditioned stimuli (CS) over drug-seeking behavior. Given the well established role of NMDA glutamate receptor activation in other forms of amygdalar-based learning, we predicted that BLA-mediated drug-cue associative learning would be NMDA receptor dependent. To test this hypothesis, male Sprague-Dawley rats self-administered i.v. cocaine (0.6 mg/kg/infusion) in the absence of explicit CS pairings (2-h sessions, 5 days), followed by a single 1-h classical conditioning (CC) session, during which they received passive infusions of cocaine discretely paired with a light+tone stimulus complex. Following additional cocaine self-administration sessions in the absence of the CS (2-h sessions, 5 days) and extinction training sessions (no cocaine or CS presentation, 2-h sessions, 7 days), the ability of the CS to reinstate cocaine-seeking on three test days was assessed. Rats received bilateral intra-BLA infusions (0.5 microl/hemisphere) of vehicle or the selective NMDA receptor antagonist, 2-amino-5-phosphonovalerate (AP-5), immediately prior to the CC session (acquisition), immediately following the CC session (consolidation), or immediately following reinstatement testing (consolidation of conditioned-cued extinction learning). AP-5 administered before or after CC attenuated subsequent CS-induced reinstatement, whereas AP-5 administered immediately following the first two reinstatement tests impaired the extinction of cocaine-seeking behavior. These results suggest that NMDA receptor-mediated mechanisms within the BLA play a crucial role in the consolidation of drug-CS associations into long-term memories that, in turn, drive cocaine-seeking during relapse.     

Changes in Public Attitudes and Perceptions about Homelessness Between 1990 and 2016

Public attitudes on homelessness can and has influenced policies and services for homeless populations. This study surveyed national public attitudes about homelessness in the 21st century and examined changes in attitudes in the past two decades. An online survey of public attitudes about homelessness was conducted with 541 U.S. adults across 47 states in November 2016 using Amazon Mechanical Turk. Survey results were compared to two public surveys conducted in 1990. Compared to previous surveys, the current sample endorsed more compassion, government support, and liberal attitudes about homelessness. The largest changes were related to increased support for homeless individuals to use public spaces for sleeping and panhandling. When asked about the demographic composition of the homeless population, the contemporary sample tended to overestimate the proportions who were young and racial/ethnic minorities, while underestimating the proportions who were married, or had mental health or substance abuse problems. Together, the findings suggest there has been an increase in compassion and liberal attitudes toward homelessness in the past two decades. Greater support for homeless individuals during an era of economic recessions and governmental homeless initiatives presents opportunities for new public health approaches to address homelessness.     

回忆任务对合作抑制和错误修剪的调节——情绪效价和编码水平的影响

前人在项目回忆条件的合作记忆研究中记录到明显的合作抑制和错误修剪,背景提取条件的相关研究尤显不足;同时,情绪效价和编码水平对两类现象调节的研究尚未涉及。为此,本文在两个实验中采用经典合作记忆研究范式,以不同情绪效价的词汇为实验材料并以词汇在学习阶段的呈现颜色为背景展开研究。实验1和实验2分别在学习阶段采用了深编码和浅编码任务,回忆阶段则均含项目回忆(回忆已学词汇)和背景提取(回忆词汇在学习阶段的呈现颜色)两种任务。采用深编码条件的实验1的结果显示,项目回忆比背景提取条件的合作抑制更强、错误修剪更弱,回忆任务与词汇情绪效价交互影响合作抑制强度;采用浅编码条件的实验2则发现错误修剪在两种任务间的差异不显著。两实验的联合分析显示,回忆任务与编码水平交互影响合作抑制和错误修剪强度。上述结果表明:回忆任务对合作抑制和错误修剪的调节支持双重加工模型;回忆任务与情绪效价对合作抑制强度的交互影响支持权衡说,且与双重加工模型相吻合;回忆任务与编码水平交互影响合作抑制和错误修剪强度。     

Perceptions of an old female eyewitness: is the older eyewitness believable?

Young adults rated an old female witness (82 years) to be less competent but more honest than a young female witness (28 years). The effect of age stereotyping on believability was assessed indirectly by using a variant of Loftus' misinformation paradigm. Regression analysis showed that the more competent a witness was perceived as being, the more influential was the misinformation she provided. This was true, however, only when the witness was young because the relatively lower competence of the old witness was associated with nonsignificant misinformation effects. These data suggest that negative beliefs associating incompetence with old age may compromise the believability of older eyewitnesses.     

小学教师职业倦怠维度发展顺序探究——来自结构方程模型和交叉滞后网络分析模型的证据

教师职业倦怠的情感衰竭、去人性化和个人成就感降低3个维度相对独立但也存在相互影响, 对其发展关系进行研究, 有助于深入理解职业倦怠的发展过程, 尽早识别倦怠症状。本研究对3837名小学教师进行追踪测试, 测试间隔为3年, 采用结构方程模型和交叉滞后网络分析模型进行分析, 结果发现小学教师职业倦怠维度最优发展模型为“T1的情感衰竭和个人成就感降低分别预测T2的情感衰竭和个人成就感降低, T1的去人性化预测T2的去人性化和个人成就感降低”, 且最优发展模型具有性别间的一致性和教龄段之间的一致性。这一结果支持并强调了去人性化在小学教师职业倦怠发展中的重要作用, 对识别教师职业倦怠早期症状并采取相应措施有效阻断教师职业倦怠的进一步发展具有一定的理论和现实意义。     

有氧运动对记忆的影响及其神经生物学机制

有氧运动是氧气充足时运用大型肌肉群进行有节奏的持续运动。有氧运动可以加快工作记忆任务中的反应速度;在记忆编码前和记忆巩固阶段进行高强度有氧运动有助于提升情景记忆;高强度有氧运动可以促进内隐记忆。有氧运动可以促进神经营养因子的产生,引起长时程增强,激活海马等与记忆相关的脑区并促进神经元再生。未来可探究有氧运动开始和持续时间的影响、有氧运动强度和认知参与的影响、有氧运动对不同年龄性别群体的影响以及脑源性神经营养因子的中介作用,从而深入揭示有氧运动对记忆的影响及其神经生物学机制。