群际情境下向上社会比较信息对自我评价的影响

以大学生为被试作了两个实验,研究群际情境下向上社会比较信息对自我评价的影响。实验1的结果表明,对于多数派群体的成员来说,来自内群体的向上社会比较信息会提高其自我评价,即产生同化效应,而来自外群体的向上社会比较信息会降低其自我评价,即产生对比效应;对于少数派群体的成员来说,无论向上社会比较信息来自内群体还是外群体,都对其自我评价几乎不产生影响。实验2表明,多数派群体成员在自我评价上的内群体同化效应依赖于群际对比。     

话语理论与后马克思主义的哲学取向--拉克劳、墨菲的后马克思主义方法论解读

话语理论是以拉克劳、墨菲为代表的后马克思主义哲学思想的核心,是他们在现代哲学,特别是20世纪哲学的语言学转向之后试图重构其哲学基石的理论尝试和结果。具体而言,话语理论是在当代言语行为理论,特别是后期维特根斯坦语言哲学的基础上,结合后结构主义者德里达的解构思想,综合而成的一种哲学理论。它试图将“话语”(d iscourse)作为后马克思主义的基石,并服务其以“霸权”(hegemony)为核心的“政治本体论”。在拉克劳和墨菲的后马克思主义思想中,所有问题都可归结为“话语”。“话语”成了阐释后马克思主义理论的重要依据和理论参考。不仅…     

The soft constraints hypothesis: a rational analysis approach to resource allocation for interactive behavior

Soft constraints hypothesis (SCH) is a rational analysis approach that holds that the mixture of perceptual-motor and cognitive resources allocated for interactive behavior is adjusted based on temporal cost-benefit tradeoffs. Alternative approaches maintain that cognitive resources are in some sense protected or conserved in that greater amounts of perceptual-motor effort will be expended to conserve lesser amounts of cognitive effort. One alternative, the minimum memory hypothesis (MMH), holds that people favor strategies that minimize the use of memory. SCH is compared with MMH across 3 experiments and with predictions of an Ideal Performer Model that uses ACT-R's memory system in a reinforcement learning approach that maximizes expected utility by minimizing time. Model and data support the SCH view of resource allocation; at the under 1000-ms level of analysis, mixtures of cognitive and perceptual-motor resources are adjusted based on their cost-benefit tradeoffs for interactive behavior.     

自然概念语义特征提取的范畴效应

本研究采用概念特征自由列举实验范式,考察三类范畴(动物、自然食物、人造物)自然概念的语义特征提取反应时间的范畴效应。结果表明,⑴语义特征提取的反应时间存在范畴效应:提取动物特征的时间显著短于提取自然食物特征的时间,提取自然食物特征的时间显著短于提取人造物特征的时间;⑵三类范畴的特征提取时间模式表现出相同的规律:先是显著降低(第1到第2个特征),然后持续升高(第2到第10个特征)。语义特征提取的范畴效应反映了语义记忆组织的范畴特异性,有必要进一步分析特征提取时间与特征类型、关联特征、独有特征之间的关系,以深入揭示语义特征提取范畴效应的产生机制。     

Quantity discrimination in fish species: fish use non-numerical continuous quantity traits to select shoals

Fish typically prefer to live in big shoals due to the associated ecological benefits. Shoaling is a behavior that depends on the ability to quantitatively discriminate. The fundamental mechanism involved in quantity discrimination determines whether fish can discriminate a shoal using numerical discrete cues (e.g., number of shoal members), non-numerical continuous traits (e.g., total body surface area) or both; however, the mechanism is currently a controversial topic. In the present study, we used a spontaneous choice experiment to test whether guppy (Poecilia reticulata), zebrafish (Danio rerio), Chinese crucian carp (Carassius auratus) and qingbo (Spinibarbus sinensis) rely on continuous (i.e., body surface area) or discrete (i.e., number of shoal members) information for shoal selection by altering the body surface area (cumulative body surface area ratio of 3:2 or 1:1) between two stimulus shoals with a different number of members (2 individuals vs 3 individuals). All four fish species preferred to shoal with the stimulus shoal with the larger cumulative surface area even if the shoal had fewer members; however, fish showed no shoal preference when the cumulative surface body areas of both stimulus shoals were equal. Furthermore, qingbo did not numerically discriminate between a shoal with 1 individual and a shoal with 3 individuals when the cumulative surface areas of both stimulus shoals were equal; however, qingbo showed a preference for the shoal with the larger cumulative surface area when the two stimulus shoals each had 3 individuals. In conclusion, the present study demonstrated that all four fish species relied only on non-numerical continuous quantity information for shoal selection, at least under a difficult task (i.e., 2 vs 3).     

自我控制对欺骗的影响

自我控制是欺骗识别中一种重要的动机线索。但无论是在识别欺骗中, 自我控制扮演的动机线索角色, 还是在欺骗行为中, 自我控制扮演的监管机制的角色, 其认知机制和神经基础还不完全清楚。自我控制能力与自我控制资源对欺骗的影响也是不一样的, 而这些影响的神经基础也还没有完全破解。因此, 有必要结合行为、事件相关电位(ERP)及功能性磁共振(fMRI)等多种技术手段来考察识别欺骗和欺骗行为中自我控制能力和自我控制资源在欺骗中的作用及其心理机制。旨在探求在识别欺骗中是识别他人自我控制能力, 还是识别他人自我控制资源在起主要作用; 欺骗行为中是自我控制能力, 还是自我控制资源在起主要作用; 自我控制资源对欺骗行为的影响是符合能量耗竭观, 还是符合能量保存观。     

An item response theory analysis of the Impulsive Behaviors Checklist for Adolescents

This study used item response theory (IRT) to examine the Impulsive Behaviors Checklist for Adolescents (IBCL-A) among 6,276 (67.7% girls) Chinese secondary school students. The IBCL-A included 15 maladaptive impulsive behaviors adapted from the Revised Diagnostic Interview for Borderlines. The authors obtained the severity and discrimination parameters for each item in the IBCL-A, examined differential item functioning across gender and age groups, and tested reliability and concurrent validity of the IBCL-A IRT-scaled score. Most items in the IBCL-A were the most accurate in assessing moderate to high levels of impulsivity and discriminated well among adolescents with varied levels of impulsivity. Differential item functioning emerged in several items across gender. The IRT-scaled score showed good construct validity and incremental predictive validity. Findings demonstrate the sound psychometric properties of the IBCL-A and support the clinical utility of this scale.     

父母温暖与青少年情绪表达能力的关系:害羞和自尊的中介作用

采用父母教养方式问卷、情感交流能力测验(ACT)、Rosenberg自尊量表和害羞量表测量449名高中生。探讨害羞和自尊在父母温暖与青少年情绪表达能力之间的中介作用。结果表明:父母温暖与自尊和情绪表达能力均呈显著正相关、与害羞呈显著负相关;自尊与情绪表达能力呈显著正相关,而害羞与情绪表达能力呈显著负相关;自尊和害羞在父母温暖与情绪表达能力之间起部分中介作用。因此,父母温暖不仅可以直接影响青少年的情绪表达能力,也可以通过提高自尊或减少害羞进而有助于青少年情绪表达能力的发展。     

劝捐策略和框架效应对个体捐赠决策的影响

采用两个3×2完全随机实验设计,考察劝捐策略和目标框架效应对个体捐赠决策的影响,结果表明：（1）劝捐策略和目标框架效应的主效应显著,信用劝捐被试捐赠更多,决策时间更短,损失目标框架比收益目标框架的被试决策时间更短,捐赠更多,被试在信用X损失框架情境中捐赠最多,反应时最短;（2）劝捐策略和框架效应的交互效应均显著,情感策略受框架效应影响较大,在损失框架下被试反应时更短,捐赠更多。     

Perceived body size affected by garment and body mass index

This study investigated the effect of garment size on perceived body size. The perceived body sizes of nine Chinese men, with Body Mass Index between 17.0 and 37.1 kg/m(2), wearing five sizes of white T-shirts were assessed using Thompson and Gray's Nine-figural Scale. Garment sizes on perceived body sizes were different for those of different Body Mass Index. A backpropagation neural net model was used to model the nonlinear relationship between the perceived body size and the body's BMI, body chest girth, and garment ease (difference between garment and body chest girth). When the BMI was less than 20, wearing larger-sized T-shirts tended to increase perceived body size. For large chest sizes and for taller persons (BMI of 20 to 28) large garments made the wearer look thinner. However, for small persons (BMI of 20 to 28) effect of garment size was relatively small. Obese persons (BMI of > 28), wearing garments too tight or too loose were perceived as larger. Minimum perceived body size was found for garment ease of 2 to 3 cm.