视觉搜索过程中的眼跳及其机制

该文对视觉搜索过程中的眼跳及其时间进程、神经机制及相关的理论与模型等方面研究进行了回顾。发现内外源性眼跳得到了研究者的普遍关注,对眼运动记忆、返回抑制及眼跳时间进程的研究尚存在分歧。关于眼跳的神经机制,额叶眼动区与上丘分别被认为是眼跳的关键区与指令发出者。尽管不同的眼跳理论与模型对眼跳现象给出了各自的解释,但都不尽完善,尚需对这些理论进行整合或者提出新的解释模型。文章还对未来的研究进行了展望     

独立预测作用,还是基础性影响？——价值观对集体行动的影响机制

为阐明价值观在集体行动参与中的地位和影响机制,研究者以利比亚事件为背景,针对现实和网络场域中不同程度的4类集体行动倾向,在天津市957名大学生中进行问卷调查研究,结果发现：价值观显著增加了低成本集体行动倾向解释率,并调节着情绪、工具性动机和社会认同对集体行动倾向的影响;中国人进行集体行动决策时具有集体主义理性计算特征;不同场域和程度的集体行动有其各自规律.结论：价值观在集体行动参与决策中是一种与社会认同类似的基础性变量.     

领导力的社会认同理论：主要内容及研究进展

作为“以下属为中心”的领导力理论,领导力的社会认同理论是社会心理学与领导力研究结合的代表.该理论采用社会认同解释领导力产生和发挥作用的过程,主要命题为：（1）群体成员通过社会认同选择有效的领导,具有高群体原型代表性的领导者最具有效性;（2）领导者可以通过塑造下属成员的社会认同来实施领导.除了以上内容外,还对该理论的实验证据及优缺点也进行了系统阐述,同时与其它领导力理论进行了整合,最后提出了未来研究的方向.     

Unconscious reward facilitates motion perceptual learning

Reward signal plays an important role in guiding human learning behaviour. Recent studies have provided evidence that reward signal modulates perceptual learning of basic visual features. Typically, the reward effects on perceptual learning were accompanied with consciously presented reward during the learning process. However, whether an unconsciously presented reward signal that minimizes the contribution of attentional and motivational factors can facilitate perceptual learning remains less well understood. We trained human subjects on a visual motion detection task and subliminally delivered a monetary reward for correct response during the training. The results showed significantly larger learning effect for high reward-associated motion direction than low reward-associated motion direction. Importantly, subjects could neither discriminate the relative values of the subliminal monetary reward nor correctly report the reward-direction contingencies. Our findings suggest that reward signal plays an important modulatory role in perceptual learning even if the magnitude of the reward was not consciously perceived.     

成人依恋对病理性网络使用的影响:社交自我效能感和孤独感的中介作用

为探讨成人依恋影响病理性网络使用(PIU)的内在机制,采用自陈式问卷调查了483名大学生,通过结构方程模型和bootstrap法考察了社交自我效能感和孤独感在成人依恋与PIU关系中的中介作用。结果表明:(1)孤独感在依恋焦虑和依恋回避对PIU的影响中起中介作用;(2)社交自我效能感和孤独感在依恋回避对PIU的影响中起链式中介作用。研究结论:成人依恋通过社交自我效能感和孤独感的中介作用影响PIU,且依恋焦虑和依恋回避两个维度的中介机制有差异。     

愉悦追求在自我调节疲劳与大学生智能手机成瘾之间的中介作用:自然联结的调节作用

采用问卷法对564名大学生进行调查,考察愉悦追求在自我调节疲劳和智能手机成瘾之间的中介作用,以及该中介作用是否会受到自然联结的调节。结果表明：（1）自我调节疲劳对大学生智能手机成瘾具有显著的正向预测作用;（2）愉悦追求在自我调节疲劳与大学生智能手机成瘾之间起着部分中介作用;（3）自我调节疲劳和愉悦追求的关系（中介效应的前半段路径）受到自然联结的调节,即自我调节疲劳对愉悦追求的正向影响随着自然联结的增强而减弱。因此,自我调节疲劳和大学生智能手机成瘾之间存在有调节的中介效应。     

社交媒体自我控制失败影响硕士生主观幸福感的心理机制

为探讨社交媒体自我控制失败、时间效能感和消极完美主义对硕士生主观幸福感的作用机制,采用问卷法对广东省408名硕士研究生进行施测。结果发现：（1）社交媒体自我控制失败显著负向预测主观幸福感;（2）时间效能感在社交媒体自控失败和主观幸福感间起部分中介作用;（3）消极完美主义在社交媒体自控失败和时间效能感的关系中起调节作用,具体表现为对于高消极完美主义者,社交媒体自控失败对时间效能感的负向影响更大。     

Gaussian variational estimation for multidimensional item response theory

Multidimensional item response theory (MIRT) is widely used in assessment and evaluation of educational and psychological tests. It models the individual response patterns by specifying a functional relationship between individuals' multiple latent traits and their responses to test items. One major challenge in parameter estimation in MIRT is that the likelihood involves intractable multidimensional integrals due to the latent variable structure. Various methods have been proposed that involve either direct numerical approximations to the integrals or Monte Carlo simulations. However, these methods are known to be computationally demanding in high dimensions and rely on sampling data points from a posterior distribution. We propose a new Gaussian variational expectation--maximization (GVEM) algorithm which adopts variational inference to approximate the intractable marginal likelihood by a computationally feasible lower bound. In addition, the proposed algorithm can be applied to assess the dimensionality of the latent traits in an exploratory analysis. Simulation studies are conducted to demonstrate the computational efficiency and estimation precision of the new GVEM algorithm compared to the popular alternative Metropolis–Hastings Robbins–Monro algorithm. In addition, theoretical results are presented to establish the consistency of the estimator from the new GVEM algorithm.     

Compositionality of the Constituent Characters in Chinese Two-Character-Word Recognition by Adult Readers of High and Low Chinese Proficiency

Journal of Psycholinguistic Research - In Chinese, the graphic units are Chinese characters, most of which are compound characters. Since a compound character can be different from another one in...     

快慢读者利用语境信息的差异：加工深度的作用

通过主题扫描和阅读理解两种加工深度不同的任务,考察快慢读者预测性效应差异的来源及加工深度在其中发挥的作用。被试在两种任务情境下阅读分别包含高低预测性目标词的96个句子框架,记录其眼动轨迹。结果显示：预测性效应仅在阅读理解任务中出现,快速读者在早期眼动指标上就表现出了预测性效应,慢速读者在晚期眼动指标上才表现出预测性效应。结果表明：加工深度调节快慢读者预测性效应的大小;在自然阅读情境下快慢读者的预测性效应表现符合预测编码框架假设。