前瞻记忆的自评和延时特点

前瞻记忆的自评和延时研究目前由于实验任务的不同结果差异很大。该文采用由前瞻记忆自我评价题目构成的并且包含前瞻记忆任务的测验材料,探索了前瞻记忆研究的一种新方法,研究了可能影响前瞻记忆的几个因素。结果发现,0延时与其它延时(7min,17min,27min,57min)均有显著差异,其它各延时之间没有显著差异,年龄对前瞻记忆和前瞻记忆自我评价均有显著影响,前瞻记忆与性别、人格、智力、回溯记忆没有显著相关。     

梅尔美术判断测验在中国应用的信、效度检验

目的:修订梅尔美术判断测验(Meier Art Judgment Test)并对其信度、效度进行检验。方法:通过对来自6所大学、中专共2270人施测梅尔美术判断测验,采用CTT区分度和IRT的模型拟合检验、区分度筛选项目,以霍兰德艺术分测验、学生艺术创作水平自评与艺术过往经历分量表为效标,以及采用效标组法(美术与非美术专业)检验效标关联效度。结果:保留的61题都拟合IRT的2参数logistic模型,量表得分与各效标得分相关显著,美术与非美术专业学生得分存在显著差异; 但测验信息量分析表明,对高能力被试的测量误差相对较大。结论:修订的量表能测量个体的美术判断能力; 今后改进方向应该是增加更难的试题。     

Lower class people suffered more (but perceived fewer risk disadvantages) during the COVID-19 pandemic

Does COVID-19 affect people of all classes equally? In the current research, we focus on the social issue of risk inequality during the early stages of the COVID-19 pandemic. Using a nationwide survey conducted in China (N = 1,137), we predicted and found that compared to higher-class individuals, lower-class participants reported a stronger decline in self-rated health as well as economic well-being due to the COVID-19 outbreak. At the same time, we examined participants' beliefs regarding the distribution of risks. The results demonstrated that although lower-class individuals were facing higher risks, they expressed lesser belief in such a risk inequality than their higher-class counterparts. This tendency was partly mediated by their stronger endorsement of system-justifying beliefs. The findings provide novel evidence of the misperception of risk inequality among the disadvantaged in the context of COVID-19. Implications for science and policy are discussed.     

First principles study of the temperature-dependent elastic properties of W

The temperature-dependent elastic constants of body-centred cubic (bcc) phase W are presented from first principles quasi-static approach. With the quasi-harmonic approximation model, the Hugoniot equation of state and temperature-dependence linear thermal expansion coefficient is successfully obtained. The adiabatic elastic constants show a normal behaviour with temperature: decrease with increasing temperature. Based on the obtained adiabatic elastic constants, the structural stability and polycrystalline aggregate properties including bulk modulus B, shear modulus G, and B/G ratio are analysed for bcc phase W. In addition, the sound velocities as a function of temperature for bcc phase W are predicted.     

Imageability and semantic association in the representation and processing of event verbs

This study examined the relative salience of imageability (the degree to which a word evokes mental imagery) versus semantic association (the density of semantic network in which a word is embedded) in the representation and processing of four types of event verbs: sensory, cognitive, speech, and motor verbs. ERP responses were recorded, while 34 university students performed on a lexical decision task. Analysis focused primarily on amplitude differences across verb conditions within the N400 time window where activities are considered representing meaning activation. Variation in N400 amplitude across four types of verbs was found significantly associated with the level of imageability, but not the level of semantic association. The findings suggest imageability as a more salient factor relative to semantic association in the processing of these verbs. The role of semantic association and the representation of speech verbs are also discussed.     

The Role of Stimulus Type and Semantic Category‐Level Attentional Set in Sustained Inattentional Blindness

Abstract: We examined the effect of the stimulus type and semantic categorization of the unexpected stimulus on sustained Inattentional Blindness (IB). Results showed that observers could establish attentional set based on a higher level of semantic categorization, which tuned one's attention to prioritizing semantic content over others. The unexpected stimulus, congruent with the attended objects in semantic categorization, was more likely to be noticed, whereas the incongruent semantic stimulus seemed to be unseen. Semantic category‐level attentional set played a crucial role in breaking through IB. The semantically congruent Chinese characters stimulus was detected and recognized more often than a semantically congruent picture stimulus, indicating that Chinese characters had more power to attract attention to escape sustained IB than pictures involved in visual processing. Presumably the finding of Chinese characters breaking through IB more easily might be due to the fact that Chinese characters look more distinct from pictures, rather than Chinese characters being processed more easily. Further research should be taken to test the semantic processing efficiency between pictures and Chinese characters in sustained IB.     

Prototypes are Key Heuristic Information in Insight Problem Solving

Evidence from a range of fields indicates that inventions are often inspired by drawing a parallel to solutions found in nature. However, the cognitive mechanism of this process is not well understood. The cognitive mechanism of heuristic prototype in scientific innovation was tested with 3 experiments. First, 84 historical accounts of important scientific innovations were collected and the prototype solution underlying them was extracted. Experiment 1 tested the validity of these materials and showed that knowledge of the prototype facilitated insight solutions. Experiment 2 and 3 suggested that activation of the prototype was indeed the critical element in the process of insight. Also, the mechanism of this activation was linked to the semantic similarity between the feature function of the prototype and the required function of the problem. In addition, Experiment 3 showed that participants who were better at excluding interference information more readily activated the relevant prototype. To sum up, the experiments suggested that activating a memory of the heuristic prototype was important in solving scientific innovation insight problems. Activating the feature function of right heuristic prototype and linking it by way of semantic similarity to the required function of the problem was the key mechanism people used to solve scientific insight problem.     

具身-生成的认知科学：走出“战国时代”

具身-生成取向正在引领当代认知科学加速发展,然而学术界在理解“具身-生成”的内涵上却正陷入“战国时代”,这严重影响了该取向的理论效力.通过分析来自交叉学科的相关证据,发现“具身”与“生成”既有联系,又有区别,两者相互支撑.具身认知主要考察嵌入在社会情境中的身体结构、活动、内容与形式对认知活动的影响.“生成”强调认知结构在大脑、身体与环境的结构性耦合中涌现出来的动态机制,尤其是知觉-行动环路的作用.未来,具身-生成的认知科学只有在应对来自经典认知科学的挑战过程中才有可能走出“战国时代”.     

K-means、潜在类别模型和混合Rasch模型的比较

基于模拟研究比较了K-means方法、潜在类别模型和混合Rasch模型在二分外显变量情境下的聚类效果.结果表明：（1）潜在类别数量、变量数量、样本量、样本平衡和变量间相关对K-means方法、潜在类别模型和混合Rasch模型的分类准确性均有影响且因素间的交互作用存在;（2）除了在2个潜在类别的样本不平衡条件下K-means方法表现较差外,在其他条件下与潜在类别模型和混合Rasch模型的表现相当;（3）混合Rasch模型的分类一致性在2个潜在类别的情境下要好于潜在类别模型,但是在4个潜在类别的情境下要差于潜在类别模型.