MIRT模型中多维能力及其相关矩阵估计的影响因素

多维项目反应理论因其模型本身的天然优势及其兼具因素分析与项目反应理论于一身的优点,而被广大研究者及应用者所重视.本研究在前人研究基础上,重点讨论MIRT多维能力及能力间相关矩阵的参数估计问题.研究采用Monte Carlo模拟方法进行,在三因素完全随机设计（4 ×3×3）下,使用MCMC算法,探讨测验维度数、维度间的相关大小和测验项目数三个因素对MIRT能力及其相关矩阵估计的影响.     

作为一种分析哲学的数理逻辑——以相对可计算性与随机性概念研究为例

对于现代逻辑的运用是分析哲学的一大特征。分析哲学与现代逻辑甚至具有共同的起源:不仅分析哲学与现代逻辑的奠基者是同一批人,他们曾面对的还是同样的问题,并为此开发出我们所熟知的研究形态。然而,分析哲学和现代逻辑(尤其是数理逻辑)后来的发展似乎走上了不同的道路。笔者则希望论证当代数理逻辑研究仍然保留了分析哲学解决问题的形态——语言分析——的主要特征。论证主要基于两则案例分析,一个是对埃米尔·波斯特(Emil Post)关于可计算性理论的开创性工作,另一个是佩尔·马丁–洛夫(Per Martin-L?f)等人在随机性概念方面的工作。笔者还将进一步提议,仍然存在着一些值得当代分析哲学家和数理逻辑共同关心的问题。     

论元结构的焦点和重音关系对话语理解的影响

本研究采用韵律合适度判断和理解任务,通过两个实验探讨论元结构的焦点和重音之间的关系对话语理解的影响。实验通过操纵答句中的论元是否出现在问句中,变化问句的信息状态;通过操纵答句不同句子成份重读,变化答句的重读位置。实验结果发现:新论元负载焦点必须重读;重读论元将焦点投射到句子的高一级单元上,但动词必须重读;旧论元不负载焦点不必重读,但负载焦点的动词必须重读。     

夫妻生活事件、归因方式及其与婚姻冲突的关系

探讨夫妻生活事件、归因方式及其与婚姻冲突的关系。采用方便取样,选取辽阳市已婚完整家庭1～10年的夫妻620对进行调查。结果表明:夫妻报告的前三项冲突领域是家务琐事、不良习惯和交流解决问题方面;妻子和丈夫报告的生活事件解释了婚姻冲突15.4%和11.9%的变异,归因解释了28.7%和24.7%的变异;归因在夫妻报告的生活事件和婚姻冲突中起部分中介作用。     

Changes in cue-induced, prefrontal cortex activity with video-game play

Brain responses, particularly within the orbitofrontal and cingulate cortices, to Internet video-game cues in college students are similar to those observed in patients with substance dependence in response to the substance-related cues. In this study, we report changes in brain activity between baseline and following 6 weeks of Internet video-game play. We hypothesized that subjects with high levels of self-reported craving for Internet video-game play would be associated with increased activity in the prefrontal cortex, particularly the orbitofrontal and anterior cingulate cortex. Twenty-one healthy university students were recruited. At baseline and after a 6-week period of Internet video-game play, brain activity during presentation of video-game cues was assessed using 3T blood oxygen level dependent functional magnetic resonance imaging. Craving for Internet video-game play was assessed by self-report on a 7-point visual analogue scale following cue presentation. During a standardized 6-week video-game play period, brain activity in the anterior cingulate and orbitofrontal cortex of the excessive Internet game-playing group (EIGP) increased in response to Internet video-game cues. In contrast, activity observed in the general player group (GP) was not changed or decreased. In addition, the change of craving for Internet video games was positively correlated with the change in activity of the anterior cingulate in all subjects. These changes in frontal-lobe activity with extended video-game play may be similar to those observed during the early stages of addiction.     

少数民族大学生文化疏离感调查

本研究在文献综述、谈话、开放式问卷调查的基础上,提出自己关于南部沿海少数民族大学生文化疏离感的理论假设,并在此基础上编制了少数民族大学生文化疏离感的初测问卷,经过初测和相应统计分析,形成正式问卷。最后使用该问卷对八所大学的500名畲族、壮族及其他少数民族大学生的文化疏离感进行调查研究,回收有效问卷398份。探索性因素因素分析结果表明,高职高专学生表现出与本科大学生不同的文化疏离感维度,分别是:文化束缚感、言语疏离感、文化执着感、文化认同感。这表明出地区、民族因素外,被试所接受的教育可能也是影响其疏离感及文化疏离感的重要因素。高职高专学生与大学生所在社会环境,个人特质及心理素质还是有一定的差距。通过方差分析,结果表明,文化疏离感各维度在学历、民族、性别主效应上有显著差异。     

Conceptual and measurement issues of the complementarity dimension of the coach–athlete relationship across cultures

ObjectivesGrounded in the 3Cs model of the coach–athlete relationship, this multi-study outlined the development of two scales that measure coaches' dominant behaviors and athletes' submissive behaviors.Method & resultsIn study 1, a pool of items was generated based on relevant literatures and interviews. The item pool was then assessed by an expert panel including academics, athletes and coaches. In Study 2 and Study 3, construct and criterion validity, as wells as internal reliability of the refined items were tested with a sample of elite coaches and athletes. Analyses revealed that Coach Dominant Behavior Scale (CDB-S) and Athlete Submissive Behavior Scale (ASB-S) possessed sound psychometric properties. In Study 4, the measurement invariance of the 10-item ASB-S was assessed across gender and five countries: Britain, China, Greece, Spain, and Sweden. Results supported the full structural invariance of the ASB-S.ConclusionOverall, the items of both CDB-S and ASB-S were found to be psychometrically sound. The discussion highlights the contributions these findings make on both conceptual and measurement levels as well as the opportunities it opens up for research with practical relevance.     

The role of affect in the decision to exercise: Does being happy lead to a more active lifestyle?

ObjectiveThis study investigated the influence of affect on individuals' intentions to engage in physical activities such as exercise. Behavior intentions were examined through the Theory of Planned Behavior (TPB).MethodAn experimental survey was conducted among 153 undergraduates randomly assigned to three conditions – positive affect, neutral, and negative affect. Key variables from the TPB were assessed across these conditions.ResultsAnalyses showed that participants in the positive affect and the negative affect conditions reported lower intentions to exercise than those in the neutral condition. Participants in the negative affect condition also reported more unfavorable attitudes toward exercise than their positive or neutral counterparts. Other TPB measures remained stable across the three conditions. In particular, perceived behavioral control and attitude were significant predictors of behavior intention in the pooled sample.ConclusionThese results underline the important role that affect, especially negative affect, plays in individuals' decision to exercise. Rational models for health behavior change, such as the TPB, should take into account the impact of affect.     

Short-Term Violent Video Game Play by Adolescents Alters Prefrontal Activity During Cognitive Inhibition

Prior research has indicated an association between exposure to violent media and aggressive thoughts, feelings, and behavior, potentially as a result of effects on inhibitory mechanisms. However, the role of violence in video games in modulating subsequent neural activity related to cognitive inhibition has received little attention. To examine short-term effects of playing a violent video game, 45 adolescents were randomly assigned to play either a violent or a nonviolent video game for 30 minutes immediately prior to functional magnetic resonance imaging (fMRI). During the fMRI procedure, participants performed a go/no-go task that required them to press a button for each target stimulus and withhold the response for non-target stimuli. Participants who played the violent game demonstrated a lower BOLD response in right dorsolateral prefrontal cortex (DLPFC) when responses were appropriately inhibited. The DLPFC is involved with executive functioning, including suppression of unwanted thoughts and behaviors. In addition, responses in the DLPFC demonstrated stronger inverse connectivity with precuneus in the nonviolent game players. These results provide evidence that playing a violent video game can modulate prefrontal activity during cognitive inhibition.     

面孔信任评价及其与信任倾向的关系

68名大学生对随机生成的300张面孔进行是否值得信任的评价,结果显示评价者对陌生面孔的初始信任程度不同,表明由结构特征所决定的面孔可信度的高低直接影响了评价者对其信任程度的高低。随后研究进一步考察了信任倾向与面孔信任评价间的关系,结果表明信任倾向与面孔信任评价间存在显著正相关,其中在"不值得信任面孔"评价中表现尤为显著。这些结果表明,面孔可信度和信任倾向两因素对于初始信任判断具有重要的影响作用。