中学生欺凌受害对其内化问题的影响:有调节的中介模型

采用特拉华校园氛围量表、特拉华欺负受害量表、心理弹性量表、病人健康问卷抑郁量表和广泛性焦虑量表对3543名中学生进行调查。探讨中学生感知的校园氛围与心理弹性在其欺凌受害与内化性问题间的中介调节作用。结果表明:(1)在控制中学生的性别、年级及父母文化水平后,欺凌受害能显著正向预测学生的内化性问题。(2)心理弹性在欺凌受害与内化性问题间起部分中介作用。(3)中学生感知的校园氛围在欺凌受害以及心理弹性对内化性问题的影响中均有显著的调节作用。     

成人脑涨落图年龄变化特点的研究

该工作研究了１２０名２０－７９岁正常成人脑涨落图的年龄变化特点。结果表明：（１）从２０岁到５０岁,Ｓ系谱线活动向低频方向集中,６０岁后谱线又向高频方向有所移动;（２）部分谐振系的随龄变化表现明显,其中以Ｓ１７系变化最为敏感;（３）脑区间相干活动和各脑区的连频活动随年龄增强,脑能量分布的有序性逐渐破坏;（４）增龄性变化主要反映在优势脑区（左前脑）和优势脑轴（左前／右后脑）上,与脑高级机能活动密切相关的左前脑的退行性变化最为明显。上述结果反映了脑功能的减退是一个非线性的多层次的复杂过程。     

Eye-contact perception in schizophrenia: relationship with symptoms and socioemotional functioning

Accurately perceiving self-referential social signals, particularly eye contact, is critical to social adaptation. Schizophrenia is often accompanied by deficits in social cognition, but it is unclear whether this includes gaze discrimination deficits. This study investigated whether eye-contact perception is preserved or impaired and if it is related to symptoms and broader socioemotional functioning in schizophrenia. Twenty-six participants with schizophrenia (SCZ) and 23 healthy controls (HC) made eye-contact judgments for faces in varying gaze direction (from averted to direct in ten 10% increments), head orientation (forward, 30° averted), and emotion (neutral, fearful). Psychophysical analyses for forward faces showed that SCZ began endorsing eye contact with weaker eye-contact signal and their eye-contact perception was less of a dichotomous function, as compared with HC. SCZ were more likely than HC to endorse eye contact when gaze was ambiguous, and this overperception of eye contact was modulated by head orientation and emotion. Overperception of eye contact was associated with more severe negative symptoms. Decreased categorical gaze perception explained variance of socioemotional deficits in schizophrenia after taking basic neurocognition into consideration, suggesting the relationship was not solely due to a general deficit problem. These results were discussed in relation to the nature of categorical gaze perception and its significance to clinical and functional presentations of schizophrenia.     

工作压力反应及其与领导方式的关系研究

本研究通过对537位工作者的调查,探讨工作压力反应的类型及其与领导方式的关系,结果显示:工作压力反应存在四种类型,分别是积极压力反应类型、高压力反应类型、低压力反应类型以及消极压力反应类型。直接领导的不同领导方式与个体不同的工作压力反应类型存在关联。混合式领导方式下的个体积极压力反应最高,消极压力反应最低。变革型领导和交易型领导下的个体积极压力反应和消极压力反应无显著差异。     

先苦后乐:英语乐学大学生在英语学习时情绪反应的脑认知特点

运用功能性磁共振成像(fMRI)技术探索了乐学英语的大学生在对中、英文材料的学习、记忆及成绩反馈过程中的情绪和脑活动特征。结果发现,被试学习英文较之学习中文积极情绪更少且伴随更强的前部脑岛的激活;但当他们获得关于英文成绩的正反馈时,中脑奖赏区的激活却明显高于获得中文成绩正反馈时的情形,且中脑激活与英语乐学呈正相关。这说明乐学是"苦中作乐",人们虽在学习时并未体验到更多快乐,但其成功却带来了更大的心理奖赏。     

Internet self-efficacy, the need for cognition, and sensation seeking as predictors of problematic use of the internet

We conducted a study of the relationships between Internet self-efficacy, sensation seeking, the need for cognition, and problematic use of the Internet. The study was based on a randomly selected sample of 979 adult Internet users. Hierarchical multiple regression analysis of these subjects' responses on a questionnaire consisting of relevant items indicated that Internet self-efficacy and sensation seeking positively predicted problematic Internet use. Contrastingly, the need for cognition was significantly negatively associated with problematic Internet use.     

赖氨酰氧化酶在动脉粥样硬化中的作用

赖氨酰氧化酶(lysyl oxidase,LOX)是一种铜依赖性氨基氧化酶,在多个组织器官中均有表达,能参与催化细胞外基质(extracellular matrix,ECM)中胶原和弹性纤维的赖氨酸残基交联,以维持细胞外基质的结构和功能正常.新近研究发现LOX与动脉粥样硬化亦有紧密关系.本文就LOX在动脉粥样硬化发生、发展过程中的联系作一综述.     

音乐训练促进诗句韵律整合加工的神经过程

本研究采用ERP技术,考察音乐训练组和对照组完成诗句押韵判断任务时,在绝句末对韵律信息(含声调和韵母两个维度)的整合加工过程。结果发现,在100～300 ms,仅音乐训练组在声调/韵母合适条件下,对韵母/声调的一致性进行深入分析,并诱发了更大的正波;在韵母违反条件下,声调违反相比声调合适诱发了更小的正波。在300～750ms,两组被试均在绝句末对诗句内出现的韵母和声调违反进行整合分析并诱发了广泛分布的负波。不过,对照组仅在声调/韵母合适条件下进行,而音乐训练组则在声调/韵母违反条件下完成此过程。综上,音乐训练组和对照组均会在诗句末完成押韵信息的整合加工,但是音乐训练组对韵律信息(尤其是声调)的加工更敏感和快速,并且对不同类型的违反有更精细的差异性反应