受害者公正敏感性对生活满意度的影响:上行社会比较和妒忌的中介作用

采用整群抽样法对福建省三所大学的638名大一至大四学生进行问卷调查,探讨受害者公正敏感性与生活满意度的关系,以及上行社会比较和妒忌在二者关系中的作用机制。结果表明： （1）在控制了性别、年龄后,受害者公正敏感性、上行社会比较和妒忌两两之间呈显著正相关,且三者均与生活满意度呈显著负相关;（2）受害者公正敏感性主要通过妒忌的单独中介作用对生活满意度产生影响,同时还会通过上行社会比较和妒忌的链式中介作用对其生活满意度产生影响,但该链式中介作用微弱。本研究揭示了受害者公正敏感性与生活满意度的关系及其作用机制,为引导大学生降低因受害者公正敏感性而对生活满意度产生的负面影响,更好地促进自身心理健康发展提供了建议。     

工作记忆、认知灵活性对幼儿阅读理解的影响:推理能力、心理理论的中介作用

研究选取202名4～5岁的幼儿为研究对象,其中男孩102人、女孩100人,研究采用测验法考察幼儿年龄、工作记忆、认知灵活性、推理能力、心理理论与其阅读理解之间的关系。研究采用Amos22.0验证模型。结果发现,4～5岁幼儿的年龄、心理理论、推理能力能直接影响其阅读理解。认知灵活性、工作记忆会通过影响心理理论、推理能力间接影响阅读理解,并且心理理论、推理能力在其中起完全中介作用。     

基于正念的干预与自我同情的关系：一项元分析

运用元分析方法对国内外有关基于正念的干预与自我同情的关系问题进行了探讨, 通过文献检索, 纳入文献65篇, 总样本量为8103。异质性检验发现, 选择随机效应模型比较合适; 敏感性分析显示, 使用One-study removed逐步删除异质性较高研究, 基于正念的干预与自我同情呈显著正相关; 次群体检验表明, 基于正念的干预与自我同情关系受对比方式的调节与影响, 但不受群体和测量工具的影响。研究结果表明, 正念对自我同情水平会产生不同程度的积极影响, 同时随着对比方式的不同对基于正念的干预与自我同情的关系会产生不同的调节作用, 而群体和测量工具对基于正念的干预与自我同情的关系并无调节效应。     

老年人整体运动知觉衰退的视觉机制——基于知觉模板模型

整体运动知觉存在年龄相关的衰退,然其老化的视觉机制仍不清楚。本研究分别招募34名青年人和老年人为研究对象,采用随机点阵范式,首次以动态速度为外部噪声考察了这一问题。结果发现,老年组整体运动一致性阈值显著高于青年组,且中等速度下的差异较小,证明整体运动知觉存在老化效应,且老化程度受到速度的影响。对两组数据进行知觉模板拟合发现,以青年组为基准,老年组表征内部加法噪声和排除外部噪声能力的 A_a 和 A_f 均大于1,且 A_a >> A_f ,提示老年人整体运动知觉的衰退可能源于其内部加法噪声的增强和排除外部噪声能力的减弱,其中内部加法噪声的增强更为显著。     

聋生1秒以下与以上的视时距知觉研究

采用时距二分任务,探讨聋生在视觉通道的1s以下和1s以上时距知觉的特点。结果发现,在1s以下条件下,聋生时距判断准确性低于普通学生;聋生CNV峰值与LPCt波幅低于普通学生,CNV潜伏期短于普通学生,LPCt峰值潜伏期长于普通学生。在1s以上条件下,聋生时距判断准确性高于普通学生;聋生N1、P2、CNV与LPCt成分各项指标与普通学生均没有显著差异。这说明,听觉丧失损伤了聋生1s以下的时距记忆与决策过程,支持了普遍缺陷假设;但听觉丧失未对聋生1s以上时距加工产生显著影响,支持了感觉补偿机制。因此,时距长度在听觉丧失对视觉时距知觉的影响中具有调节作用,为时间认知的分段综合模型提供了新的支持证据。     

消极刻板印象对老年人医疗决策的影响及归因偏差的作用

随着年龄的增长, 对老年人的消极刻板印象和医疗决策逐渐成为了与老年群体越来越相关的两个概念。在此背景下, 很有必要系统地探讨消极刻板印象对老年人医疗决策的效应及其机制。本研究以158名老年人为被试, 通过两个实验考察了消极刻板印象、归因偏差和老年人医疗决策质量间的关系。实验1结果发现, 消极刻板印象负向影响老年人的医疗决策质量, 同时, 归因偏差在刻板印象对老年人医疗决策质量的效应中起到中介作用。实验2结果表明, 减少归因偏差的干预控制可以有效降低刻板印象对医疗决策质量的消极效应。本研究对理解刻板印象效应机制、缓解刻板印象消极效应、以及改善老年人医疗决策质量具有一定的理论意义和实践价值。     

Where to sleep next? Evidence for spatial memory associated with sleeping sites in Skywalker gibbons (Hoolock tianxing)

Animal Cognition - Finding suitable sleeping sites is highly advantageous but challenging for wild animals. While suitable sleeping sites provide protection against predators and enhance sleep...     

Choices and preferences: Evidence from implicit choices and response times

We present a new experimental paradigm where choice-induced preference change is measured for alternatives which are never compared directly, but rather confronted with other alternatives in a way which keeps choices predictable without exogenously manipulating them. This implicit-choice design improves on the free-choice paradigm, avoiding the recently criticized selection bias. Rating and ranking spreads in two experiments show that preference-based choices feed back into and alter preferences even if choices are not directly among similarly evaluated alternatives. In agreement with recent brain-imaging evidence, response time measurements for direct choice pairs in our experiments indicate that reappraisal processes are already triggered during decision making, with larger post-choice spreads (sharper attitude change) being associated to quicker decisions.     

Does social support reduce distress caused by ostracism? It depends on the level of one's self-esteem

We hypothesized that the companionship of a close other would buffer the negative effect of ostracism for people with a strong sense of self-esteem. Participants were either included or ostracized during the experiment with the presence of a close other or a stranger. We measured the participants' self-esteem and feelings about the ostracism or inclusion experience. Consistent with our predictions, participants accompanied by a close other were less threatened by the ostracism experience than those accompanied by a stranger; furthermore, the buffering effect of a social companion on ostracism was more apparent among participants high in self-esteem but not among those low in self-esteem. The implications of these findings for ostracism research were discussed.     

Site preference of refractory elements in γ′-Ni3Al alloyed with Ru

The influence of ruthenium (Ru) on the partitioning behavior of W, Re and Cr in γ′-Ni₃Al has been studied using the Dmol3 method based on the density functional theory. The calculated results show that W, Re and Cr have a preference for the Ni site in γ′-Ni₃Al alloyed with Ru. When Ru substitutes the central Ni atom, the site preference for W, Re and Cr varies. Furthermore, an electronic structure analysis of the alloy in terms of the Mulliken population and partial density of states was performed to elucidate the alloying mechanism of Ru in γ′-Ni₃Al. The results show that the strengthening effect of Ru in the alloy arises from a reduction in the binding energy of Ru as well as p-orbital hybridization between Ru and the host atoms.