父母控制与儿童心理适应的关系：儿童自我控制的中介作用

以555名小学四到六年级儿童为被试,采用问卷调查法考察父母控制与儿童心理适应的关系,以及儿童自我控制在两者关系间的中介作用。结果发现：（1）六年级儿童的自我控制水平显著高于四年级,且情绪症状显著多于四、五年级;男生多动−注意缺陷水平显著高于女生;（2）父母行为控制对儿童积极心理适应具有显著正向预测作用,对儿童消极心理适应具有显著负向预测作用;而父母心理控制对儿童积极心理适应具有显著负向预测作用,对儿童消极心理适应具有显著正向预测作用;（3）儿童自我控制在父母控制（行为控制和心理控制）与儿童多动−注意缺陷和亲社会行为的关系间起显著中介作用,在父母控制与儿童情绪症状关系间中介作用不显著。     

初中生依恋风格与欺凌保护行为的关系：社会支持和欺凌应对效能的链式中介作用

为考察初中生依恋风格与欺凌保护行为的关系,同时探讨社会支持和欺凌应对效能的链式中介作用,采用问卷法对565名初中生进行调查。结果发现：（1）依恋焦虑与欺凌保护行为呈显著正相关,依恋回避与欺凌保护行为呈显著负相关;（2）社会支持和欺凌应对效能在依恋回避与欺凌保护行为之间起链式中介作用。若要增加依恋回避初中生的欺凌保护行为,应注重为其提供社会支持,提升欺凌应对效能。     

粗暴养育与中学生学习投入：状态焦虑与性别的作用

基于儿童学习投入的社会文化情境发展模型和动机与投入之轮理论,构建了一个有调节的中介模型,探讨了粗暴养育与学习投入的关系以及状态焦虑与性别的作用。对852名初中生进行问卷调查,结果发现：（1）粗暴养育与状态焦虑呈显著正相关,与学习投入呈显著负相关,状态焦虑与学习投入呈显著负相关;（2）状态焦虑在粗暴养育与学习投入之间起完全中介作用;性别调节了“粗暴养育→状态焦虑→学习投入”的前半段路径,相对于男性,粗暴养育与状态焦虑的正向联系在女性中更强。     

中文阅读中快速读者与慢速读者的词频效应

在熟练的中文阅读中,个体阅读效率越高,词汇加工效率是否越高,目前还缺少直接证据。本研究通过记录快速读者与慢速读者在阅读含有高频或低频目标词句子时的眼动轨迹来考察该问题。结果发现,在第一遍注视时间、回视路径时间和总注视时间上,快速读者对高频词与低频词的注视时间无显著差异,但都短于慢速读者;而慢速读者对低频词的注视时间显著长于高频词。即快速读者的早期词汇识别和后期词汇整合效率都较高,不受词频影响;而慢速读者的整个词汇加工效率较低,受词频影响较大。这些结果表明两组读者的词汇加工模式具有本质差异,符合个体差异性观点与词汇质量假说。     

父亲和母亲自主支持的特点及其与青少年社会适应的关系：自尊的中介作用

采用父母自主支持量表、自尊量表和青少年社会适应状况评估问卷,对1888名青少年进行调查,考察青少年感知到的父亲和母亲自主支持的年级特点,并探查父母自主支持与青少年社会适应的关系,以及自尊在二者关系中的作用。结果发现：（1）青少年感知到父亲和母亲自主支持发展趋势一致,均表现出先下降后上升的趋势,并在初二时期出现拐点。（2）父亲和母亲的自主支持与青少年自尊及社会适应各领域的发展均呈正相关,而且父亲和母亲自主支持的作用不仅具有累加效应,还可以相互补偿。（3）自尊在父亲和母亲自主支持与社会适应之间均起部分中介作用。     

Adult age differences in categorization and multiple-cue judgment

We often need to infer unknown properties of objects from observable ones, just like detectives must infer guilt from observable clues and behavior. But how do inferential processes change with age? We examined young and older adults' reliance on rule-based and similarity-based processes in an inference task that can be considered either a categorization or a multiple-cue judgment task, depending on the nature of the criterion (binary vs. continuous). Both older and young adults relied on rule-based processes in the multiple-cue judgment task. In the categorization task, however, the majority of older adults relied on rule-based processes while young adults preferred similarity-based processes. Moreover, older adults who relied on rule-based processes performed poorly compared with young adults who relied on the same process, suggesting that aging is associated with deficits in applying rule-based processes.     

A MULTILEVEL INVESTIGATION OF LEADER– MEMBER EXCHANGE,INFORMAL LEADER EMERGENCE,AND INDIVIDUAL AND TEAM PERFORMANCE

This study examines the antecedents and outcomes of informal leader emergence in work teams. Drawing upon research in vertical and shared leadership, we hypothesized that the relationship between leader‐‐member exchange (LMX) quality and employees’ emergence as informal leaders is moderated by team shared vision such that there is a positive (negative) LMX—leader emergence relationship for teams with high (low) shared vision. Informal leader emergence, in turn, was expected to relate to higher individual and team performance. Results based on multisource and multimethod data collected at 3 points in time (361 followers in 74 work teams) provided support for these hypotheses. The findings highlight the role played by formal leaders and team shared vision in jointly promoting or inhibiting informal leader emergence and thereby impacting individual performance and team effectiveness.     

THE ROLE OF AFFECT AND LEADERSHIP DURING ORGANIZATIONAL CHANGE

Based on multilevel data collected at 2 points in time, we examine the role of employees’ affective experiences in shaping their commitment and behavioral responses to both the initial (Time 1) and later (Time 2) phases of organizational change (12 months later). We also test the cross‐level effect of workgroup managers’ transformational leadership on their employees’ responses to change. We find strong support for predicted longitudinal relationships between employees’ affective experiences and their commitment and behavioral responses to change. In particular, employees’ positive and negative affect (NA) at Time 1 significantly predict both their commitment to change and the 3 dimensions (supportive, resistant, and creative) of behavioral responses at Time 2. Further, the effects of NA directly influence employee change commitment and behaviors at Time 2, whereas the long‐term effects of positive affect occur both directly and indirectly through commitment to change at Time 1. Finally, our results support the hypothesized role of workgroup managers’ transformational leadership in shaping employees’ affective reactions and commitment to change at the initial phase of change and thereby, their subsequent behavioral responses in the later phase. We discuss the implications for theory and practice in organizational change.     

阅读投入对阅读素养影响的跨文化比较研究——以PISA 2009为例

基于PISA2009的数据,从国际比较的视角出发,使用两水平线性模型,考察阅读投入对15岁学生阅读素养成绩的影响,并分析该影响模式在中国上海、韩国、芬兰和美国之间的异同。结果发现:(1)总体上,在四种不同文化背景下,学生的阅读投入均与阅读素养表现关系密切。(2)具体到构成阅读投入的各个变量,阅读兴趣、控制策略、理解和识记元认知策略以及总结元认知策略均对阅读素养表现有正向预测作用,这在不同文化背景中表现出基本一致的模式;阅读时间量、阅读材料的多样性、网上阅读活动的多样性、校内阅读变量、记忆以及精细化加工策略对阅读素养表现的影响在不同国家/地区表现出不同的关系模式。此外,本研究探讨了从增加个性化阅读时间、增加阅读文本的多样性以及进行有效学习策略的指导三个方面培养学生的阅读投入。     

三羧酸循环的发现与启示

三羧酸循环;也被称之为柠檬酸循环;三羧酸循环是需氧生物体内普遍存在的代谢途径.英国生物学家克雷布斯发现了这个代谢通路;所以又被称之为克雷布斯循环( Krebs Cycle).从三羧酸循环发现过程寻找其发现这种循环的规律和社会历史背景;以及挖掘科学的思维方式和实验条件的进步对实验结果的影响.