老年人整体运动知觉衰退的视觉机制——基于知觉模板模型

整体运动知觉存在年龄相关的衰退,然其老化的视觉机制仍不清楚。本研究分别招募34名青年人和老年人为研究对象,采用随机点阵范式,首次以动态速度为外部噪声考察了这一问题。结果发现,老年组整体运动一致性阈值显著高于青年组,且中等速度下的差异较小,证明整体运动知觉存在老化效应,且老化程度受到速度的影响。对两组数据进行知觉模板拟合发现,以青年组为基准,老年组表征内部加法噪声和排除外部噪声能力的 A_a 和 A_f 均大于1,且 A_a >> A_f ,提示老年人整体运动知觉的衰退可能源于其内部加法噪声的增强和排除外部噪声能力的减弱,其中内部加法噪声的增强更为显著。     

消极刻板印象对老年人医疗决策的影响及归因偏差的作用

随着年龄的增长, 对老年人的消极刻板印象和医疗决策逐渐成为了与老年群体越来越相关的两个概念。在此背景下, 很有必要系统地探讨消极刻板印象对老年人医疗决策的效应及其机制。本研究以158名老年人为被试, 通过两个实验考察了消极刻板印象、归因偏差和老年人医疗决策质量间的关系。实验1结果发现, 消极刻板印象负向影响老年人的医疗决策质量, 同时, 归因偏差在刻板印象对老年人医疗决策质量的效应中起到中介作用。实验2结果表明, 减少归因偏差的干预控制可以有效降低刻板印象对医疗决策质量的消极效应。本研究对理解刻板印象效应机制、缓解刻板印象消极效应、以及改善老年人医疗决策质量具有一定的理论意义和实践价值。     

青少年友谊网络与受欺凌的共同变化关系：一项纵向社会网络分析研究

欺凌是一种涉及多类行为和多主体互动的群体过程, 但是已有研究很少在同伴的群体互动和关系变化过程中研究欺凌相关行为的发展。尤其是受欺凌作为一种被动承受而非主动选择的行为结果, 对其在同伴情境中的变化过程研究更为有限。本研究从青少年的友谊网络与其受欺凌的共变关系入手, 采用纵向社会网络分析法, 对来自26个班1406名学生进行为期1年的3个时间点(七年级末、八年级上学期末、八年级下学期末)的追踪研究, 结果发现：(1)受欺凌影响群体内友谊关系的建立：受欺凌水平高的青少年更难以与同伴建立朋友关系(同伴回避效应), 且更倾向于选择同样受欺凌水平高的个体作为朋友(同伴选择效应); (2)友谊关系影响受欺凌水平的变化：在群体中拥有更多朋友关系的青少年, 其受欺凌水平会逐渐降低(同伴保护效应); 但另一方面, 拥有高受欺凌水平朋友的青少年, 自己的受欺凌水平会随着时间呈增高趋势(同伴影响效应); (3)随着时间的发展, 女生的受欺凌水平比男生更容易降低(性别影响效应)。研究结果揭示了友谊网络和受欺凌的共变关系, 为校园欺凌群体干预提供启示。     

生命教育:医学生职业精神教育的核心内容

首先明确医科大学生职业精神教育应以生命教育为核心内容;继而指出在生命认知、死亡教育的基础上;强化生命责任教育、生命价值教育应突出医学的职业特征;以培养医科学生对医学职业精神的理性认识;最后阐述医科大学生职业精神教育应遵循教育内容与医学教育实践结合;与诊疗工作相结合的基本原则.     

腰椎间盘突出症保守治疗的再争议——髓核脱出的回缩与吸收现象的反思

MRI影像学证实的腰椎间盘脱出髓核可以发生回缩或消失的现象近来受到学术界的关注.本文就该现象的临床预测及对于腰椎间盘突出症保守治疗原则引发的临床争议进行了归纳,进而提出对腰椎间盘突出症的基本病理认识的革命性探索.     

数学认知能力的遗传证据研究综述

数学认知能力是人类最重要的高级认知功能之一,许多研究者对其遗传性给出了相关的证据。本文从数感具有跨种系的特点、婴儿具有数量辨别能力、数学遗传的双生子研究以及遗传综合症病人的研究等间接和直接证据层面对数学认知能力的遗传性研究进行了简要的总结分析,指出对数学认知能力的遗传基因研究还需要从正常人的角度做进一步的研究探索,以便真正找到数学能力的遗传基因。     

Outcome favorability as a boundary condition to voice effect on people's reactions to public policymaking

Regarding people's reactions to public policymaking, an organizational justice framework has been introduced. Although these studies showed a link between fairness perceptions and attitudes toward public policy and authority, results concerning more behavioral consequences and the moderation of outcome favorability are less clear. The present research explored the voice effect on people's reactions to public policymaking, as well as outcome favorability as a boundary condition to it. Two different settings and use of different designs (a scenario and an experiment) yielded convergent results that people's reactions to public policymaking were more favorable when they had voice than they did not and outcome favorability moderated the voice effect. More precisely, the voice effect was stronger when the outcome was unfavorable than favorable.     

Parental,Peer, and Teacher Influences on the Social Behavior of Hong Kong Chinese Adolescents

Intensive interviews and self-report questionnaires were used to investigate parental, peer, and teacher influences on the prosocial and antisocial behaviors of Hong Kong Chinese adolescents. Students came from 5 academically different high schools. Results indicated that perceived parental influence was positively associated with frequency of prosocial behavior and negatively associated with frequency of delinquent behavior. Students with good relationships with their parents and peers showed lower frequencies of antisocial behaviors than did students with bad relationships. Adolescents in different identity statuses (achievement, moratorium, foreclosure, diffusion; E. H. Erikson, 1968) showed different patterns of prosocial and antisocial behaviors. For example, adolescents in the identity achievement group exhibited high frequencies of prosocial behaviors and low frequencies of antisocial behaviors, but those in the identity moratorium group exhibited quite high frequencies of both prosocial and antisocial behaviors.     

The Relation of Prosocial and Antisocial Behavior to Personality and Peer Relationships of Hong Kong Chinese Adolescents

The prosocial and antisocial behaviors of 2,862 Hong Kong Chinese adolescents were investigated. The major findings were as follows: (a) boys were more antisocial than girls; (b) negative peer influences were significantly stronger in boys than in girls, whereas positive peer influences were significantly stronger in girls than in boys; (c) antisocial adolescents tended to perceive their best friend as antisocial and exerting more negative influences on them, whereas prosocial adolescents tended to perceive their best friend as prosocial and exerting more positive influences on them; (d) antisocial behavior was positively associated with psychoticism and neuroticism; and (e) academic achievement tended to have a positive relation with prosocial behavior and a negative relation with antisocial behavior.