Hyperactivity in Children: A Focus on Genetic Research and Psychological Theories

Hyperactivity has attracted a large amount of research interest in recent years. Here we review developments in genetic research and in research testing psychological theories of the condition. Family, adoptee and twin studies indicate a strong role for genetic factors in the etiology of hyperactivity. Evidence is emerging also from molecular genetic studies, implicating specific genes that may be involved. At the level of cognitive functioning, a divided, focused or sustained attention deficit does not seem to be a core deficit in hyperactivity. Although children with hyperactivity often perform poorly on certain executive function tasks, there is disagreement about the interpretation of these findings. The association reported in some studies between a slow inhibitory process and hyperactivity may reflect a generally slow, variable in speed and inaccurate pattern of responding. Hypotheses about psychological mechanisms such as state regulation or delay aversion provide alternative, and particularly encouraging, interpretations of the findings. We discuss the possible integration of the two lines of research—those of genetic research and research on psychological mechanisms.     

Fitting longitudinal reduced-rank regression models by alternating least squares

An alternating least squares method for iteratively fitting the longitudinal reduced-rank regression model is proposed. The method uses ordinary least squares and majorization substeps to estimate the unknown parameters in the system and measurement equations of the model. In an example with cross-sectional data, it is shown how the results conform closely to results from eigenanalysis. Optimal scaling of nominal and ordinal variables is added in a third substep, and illustrated with two examples involving cross-sectional and longitudinal data.Financial support by the Institute for Traffic Safety Research (SWOV) in Leidschendam, The Netherlands is gratefully acknowledged.     

不同社交媒体使用目的对员工工作绩效的影响机制

基于工作要求-资源理论, 本研究探讨了两种社交媒体使用目的对员工工作绩效影响的内部作用机制, 进而分析两种社交媒体使用目的对员工工作绩效的影响效果。通过369份“领导者-下属”匹配数据, 研究发现：(1)基于工作、社交的社交媒体使用均促进员工工作绩效; (2)基于工作、社交的社交媒体使用均通过工作投入影响工作绩效, 基于社交的社交媒体使用还通过关系冲突影响工作绩效; (3)社交媒体的工作使用和社交使用对员工工作绩效的影响存在相互替代关系。本研究结果不仅从理论上拓展了社交媒体使用的研究视角, 为后续研究提供新的理论框架, 同时通过比较分析为组织管理社交媒体使用提供了新思路。     

Attentional biases to threat in social anxiety disorder: time to focus our attention elsewhere?

Background: Cognitive models propose that attentional biases to threat contribute to the maintenance of social anxiety disorder (SAD). However, the specific characteristics of such biases are still object to debate.

Objectives: The current study aimed to disentangle effects of trait and state social anxiety on attention allocation towards social stimuli.

Methods: Participants with SAD (n?=?67) and healthy controls (n?=?62) completed three visual search tasks while their eye movements were recorded. Half of the participants in each group were randomly assigned to a state anxiety induction.

Results: Contrary to our predictions, neither trait nor state social anxiety was associated with a facilitated attention to or a delayed disengagement from threat. However, participants with SAD did show reduced fixation durations for threatening stimuli, indicating an avoidance of threat. Induction of state anxiety led to an increased distractibility by threat.

Conclusions: We suggest that attention allocation in SAD is characterized by an avoidant rather than a vigilant attentional bias. Accordingly, our results contradict previous results that associate SAD with facilitated attention to threat and existing approaches to modify attentional biases, that aim to decrease attention towards threatening stimuli.     

疫病与外交：清末民初华洋互动视域下的瘟疫防治

瘟疫贯穿人类历史发展始终。近代以降,由于列强势力深入中国各地,围绕瘟疫防治而产生的华洋互动日趋频繁。一方面,外侨主导的防疫事业引发了中国社会各阶层收回防疫主权的外交诉求;另一方面,列强以防疫之名行侵略之实的行为使得华洋之间围绕国权展开了艰难博弈。在此过程之中,近代中国政府通过完善其行政能力,更有力地介入到防疫领域的管理中,推动了防疫事业的制度化发展,并以外交的方式维护公共卫生领域的国权,从而在应对公共卫生事件中逐步走向成熟。

     

国有大中型企业职工满意感研究

本文在对山东省国有大中型企业职工进行大规模抽样问卷凋查的基础上．分析了满意感调查表的信度和效度。并探讨了运用该调查表所得出的～些重要结论。对所获数据的分析表明：(1)满意感量表具有良好的再测信度和结构效度;(2)国有大中型企业职工总体满意感和五个方面的具体满意感不太平衡;(3)国有大中型企业职工满意感受到职工个人的性别、年龄、受教育程度、婚姻状况、工作性质、进厂方式,以及职工所属企业所在地区、企业规模、效益、转轨情况等因素的影响。     

他人知识状态觉知对幼儿名词学习的影响

本研究采用两个实验考察了他人知识状态觉知对不同语言能力幼儿名词习得的影响。参加实验的被试是来自上海市三所幼儿园的89名3～4岁幼儿。实验一发现,高语言能力幼儿在确定和不确定两种实验条件下的名词习得有显著差异,确定条件下的得分高于不确定条件。一般语言能力幼儿未表现出上述区别;实验二进一步发现高语言能力幼儿能忽视表面的语气线索所表达的迟疑,影响他们词语学习的是对他人知识状态的深层觉知。     

Religion,Statelessness, and Belonging

Before 1948, and stretching back more than 1800 years, the Jewish people suffered all the problems of statelessness. The Zionist movement, 1897–1948, strove to end the condition of Jewish exile and statelessness. The great historical irony and tragedy is that the establishment of the State of Israel brought about the Nakba, the catastrophe, of the Palestinian people. Both the Israelis and the Palestinians see themselves as the victims of the conflict. They seem to be competitors in what I call a “suffering sweepstakes.” One of the problems with victimhood is that it prevents victims from assuming responsibility for their actions, including the victimization of others. In the Israeli–Palestinian conflict, both sides are victims and both sides are victimizers. The least helpful thing people can do – and regrettably many well‐meaning people do this – is to portray the situation in terms of a zero‐sum game, in which, if you’re pro‐Palestinian, you must be anti‐Israeli, and vice versa. We must be both pro‐Palestinian and pro‐Israeli, because we are pro‐people and, therefore, pro‐peace. The achievement of peace necessitates a two‐state solution based on some recognition of the two narratives. The best fulfilment of Zionism will come when there is a Palestinian state alongside the State of Israel.     

Resting Frontal EEG Asymmetry and Personality Traits: A Meta‐analysis

Frontal asymmetry has been widely used as a marker of emotion, motivation, and psychopathology. When assessed during the resting state, it is regarded as an index of trait approach and withdrawal motivation. However, the replicability of these associations with personality is currently unclear. The present meta‐analysis seeks to provide a comprehensive quantitative review of the relationship between personality traits and resting electroencephalographic (EEG) frontal asymmetry. We distinguished five personality clusters: extraversion, neuroticism, impulsivity, anger, and defensiveness. Data from 79 independent samples with overall 5700 participants were included in the meta‐analysis. The results revealed that less than 0.4% of the variance in extraversion and neuroticism could be explained by resting frontal asymmetry. Similarly, a small effect was observed for trait anger, and a small‐sized to medium‐sized effect was observed for defensiveness, although the number of studies was very low. No significant effect emerged for impulsivity. The effects were further reduced after adjustment for publication bias. Given some evidence for heterogeneity, sub‐traits were analysed, and methodological moderators were investigated. Based on the results, we conclude that the validity of resting frontal asymmetry as a marker for personality is not supported. Finally, recommendations are given to increase the replicability of frontal asymmetry research. © 2019 European Association of Personality Psychology