消费决策中羊群行为的心理机制

羊群行为是消费市场上的一种典型现象,它是指在不确定情境中,消费者模仿他人进行消费决策的行为。本研究通过模拟消费情境对消费者羊群行为的心理机制进行研究。研究1通过操纵观点的强弱研究消费者的信息加工方式。结果发现,消费者的羊群行为是消费者采用一致性启发式或能力启发式的结果。研究2进一步通过操纵群体内部的一致性程度考察两种启发式的作用条件。结果表明,在群体内部一致性程度高的情况下,消费者倾向于采用一致性启发式,与大众决策保持一致;在群体内部一致性低的情况下,消费者倾向于采用能力启发式,与专家的决策保持一致。     

Organization of visual short-term memory

The authors examined the organization of visual short-term memory (VSTM). Using a change-detection task, they reported that VSTM stores relational information between individual items. This relational processing is mediated by the organization of items into spatial configurations. The spatial configuration of visual objects is important for VSTM of spatial locations, colors, and shapes. When color VSTM is compared with location VSTM, spatial configuration plays an integral role because configuration is important for color VSTM, whereas color is not important for location VSTM. The authors also examined the role of attention and found that the formation of configuration is modulated by both top-down and bottom-up attentional factors. In summary, the authors proposed that VSTM stores the relational information of individual visual items on the basis of global spatial configuration.     

Child-Adolescent Suicidal Potential Index (CASPI): a screen for risk for early onset suicidal behavior

This study's purpose was to develop a reliable and valid self-report questionnaire, the Child-Adolescent Suicidal Potential Index (CASPI), to screen for risk for suicidal behavior in children and adolescents. Four hundred twenty-five child and adolescent psychiatric patients and nonpatients completed the CASPI and other research instruments to rate suicidal and assaultive behavior and symptoms of depression, anxiety, and hopelessness. The 30-item CASPI involves 3 factors (anxious-impulsive depression, suicidal ideation or acts, family distress) that contributed to a unidimensional 2nd-order factor accounting for 59% of the total variance. Internal consistency (alpha) for the total score was .90, and test-retest reliability (ICC) for the total score was .76. Total score distinguished between children and adolescents with different severity of psychopathology and different levels of suicidal and assaultive behavior. Each of the 3 factors had different contributions to discriminating between levels of suicidal status. CASPI total score of 11 distinguished suicidal ideation or acts from nonsuicidal behavior, with sensitivity 70% and specificity 65%. CASPI total score positively correlated with symptom severity of depression, anxiety, and hopelessness.     

Probing the visual representation of faces with adaptation: A view from the other side of the mean

Sensory adaptation and visual aftereffects have long given insight into the neural codes underlying basic dimensions of visual perception. Recently discovered perceptual adaptation effects for complex shapes like faces can offer similar insight into high-level visual representations. In the experiments reported here, we demonstrated first that face adaptation transfers across a substantial change in viewpoint and that this transfer occurs via processes unlikely to be specific to faces. Next, we probed the visual codes underlying face recognition using face morphs that varied selectively in reflectance or shape. Adaptation to these morphs affected the perception of "opposite" faces both from the same viewpoint and from a different viewpoint. These results are consistent with high-level face representations that pool local shape and reflectance patterns into configurations that specify facial appearance over a range of three-dimensional viewpoints. These findings have implications for computational models of face recognition and for competing neural theories of face and object recognition.     

敦煌佛教文献部分写卷的著录及定名问题

敦煌佛教文献卷帙浩繁,许多写卷无现成题名,甚至为残篇断简,稍有不慎,其定名和著录就难免疏误,本文就此展开讨论,对部分写卷的著录及定名提出商榷意见。     

Stimulated release of tissue plasminogen activator from artery wall sympathetic nerves: implications for stress-associated wall damage

Recurrent stress is clinically associated with early onset hypertension and coronary artery disease. A mechanism linking emotion to pathogenic remodeling of the artery wall has not been identified. Stress stimulates acute regulated release of tissue plasminogen activator (t-PA) into the circulation, which is presently attributed to the vascular endothelium. Sympathetic neurons also synthesize t-PA and axonally transport it to the arterial smooth muscle. Unlike release by the endothelium, a stress-stimulated sympathetic discharge would potentially accelerate degradation of the wall matrix by plasmin. To assess whether sympathetic axons are the principal source of acute stress-induced arterial release of t-PA, we compared the output from small densely innervated and large sparsely innervated isolated artery segments before and after sympathetic stimulation, and after ablations. Following phenylephrine infusion densely-innervated microvessels in uveal eyecups were released over 60-fold greater amounts of active t-PA per milligram than the sparsely innervated aorta; and ten-fold more than carotid artery segments. Mesenteric artery release was 4.8-fold greater than release by the carotid artery. In vivo, uveal release of t-PA increased more than three-fold within one minute following superior cervical sympathetic ganglion electrical stimulation, and after phenylephrine, or nicotine infusions of the anterior chamber. Circulating levels of t-PA fell 70% following chemical sympathectomy. We propose that sympathetic nerves are the primary source of stress-induced release of t-PA into and from the densely innervated resistance arteries and arterioles, where dysregulated plasmin-induced proteolysis could damage the wall matrix.     

Visual short-term memory for sequential arrays

The capacity of visual short-term memory (VSTM) for a single visual display has been investigated in past research, but VSTM for multiple sequential arrays has been explored only recently. In this study, we investigate the capacity of VSTM across two sequential arrays separated by a variable stimulus onset asynchrony (SOA). VSTM for spatial locations (Experiment 1), colors (Experiments 2-4), orientations (Experiments 3 and 4), and conjunction of color and orientation (Experiment 4) were tested, with the SOA across the two sequential arrays varying from 100 to 1,500 msec. We find that VSTM for the trailing array is much better than VSTM for the leading array, but when averaged across the two arrays VSTM has a constant capacity independent of the SOA. We suggest that multiple displays compete for retention in VSTM and that separating information into two temporally discrete groups does not enhance the overall capacity of VSTM.     

Buddhist logic and apologetics in 17<Superscript>th</Superscript> century China: An analysis of the use of Buddhist syllogisms in an anti-Christian polemic

Conclusion A glimpse of the new application of Buddhist logic in the seventeenth century leads us to reflect about our approach to logic in a given religious tradition: Should we isolate a logical system from the very context that has given rise to the genesis and development of such an intellectual apparatus? Methodologically, we do have the legitimate right to approach Buddhist logic from a purely logical point of view. However, when we study the actual use of Buddhist logic in the seventeenth-century anti-Christian polemic, an analysis of its intentional application allows us to conclude that Buddhist logic in the context of controversy is primarily apologetic. Therefore, with a methodological concern, I suggest that philosophers and logicians should reconsider the apologetic nature of logic in any given religious tradition.     

情绪调节灵活性对负性情绪的影响：来自经验取样的证据

情绪调节灵活性是指个体根据不断变化的情境需求灵活部署情绪调节策略的能力。本研究采用经验取样方法,通过拟合个体在日常生活事件(如,未通过考试)和突发公共卫生事件(COVID-19)中的策略使用剖面结构和情境负性程度与策略使用程度的共变关系测量个体的情绪调节灵活性水平,并探讨其对个体后续负性情绪(抑郁和焦虑)的影响。两个独立样本结果表明：单一策略使用偏好(如沉浸偏好和表达抑制偏好)的个体在负性生活事件中和疫情期间经历了更高水平的抑郁和焦虑情绪。此外,当个体随情境负性程度提高使用更多分心策略,而随情境负性程度降低使用更多认知重评策略(意味较高的情绪调节灵活性),其抑郁和焦虑情绪水平更低。以上结果共同证实了情绪调节灵活性有利于减少个体的负性情绪体验。     

Moral bias toward different social classes

The influence of social class on prosocial behaviour has long been a focus of intense research interest. The present research involved four studies that covered four moral exemplars (villains, victims, heroes, and beneficiaries) to test whether people of different social classes are treated equally in moral judgements. We described moral events experienced by different agents of varying social classes and asked participants to rate the morality of the events and their emotional responses. The results revealed that compared with the low-class condition, high-class individuals had an overall moral disadvantage when they were regarded as villains, victims, and beneficiaries. For the exemplar of hero, the high-class condition was no different from the low-class condition except that high-class heroes evoked less elevation than low-class heroes. The results reveal that people hold a biased moral attitude toward individuals in different social classes.