声誉关注与社会距离对伤害困境中道德决策的影响：来自行为与ERPs的证据

在社会交往中, 声誉关注是人类合作行为和道德判断的重要决定因素之一。以往研究只是单独考察声誉关注或社会距离会如何影响道德决策行为, 但两者如何交互影响道德决策尚不清楚, 尤其是禁止性道德范畴领域(如, 伤害他人行为)下道德决策的认知神经机制。本研究要求被试在匿名或公开情境下决策是否愿意对不同社会距离他人(朋友、熟人、陌生人)实施疼痛电击以增加自己的金钱收益, 同时记录其决策时的行为和神经反应。结果发现, 匿名情境下被试对朋友的电击伤害要显著低于对熟人和陌生人的, 表现出一种明显的“利己的利他主义”决策倾向; 与朋友和陌生人相比, 被试在涉及熟人的两难决策中花费了更长的时间, 体验到了更强烈的厌恶情绪, 并诱发了更大波幅的与情绪反应有关的P260成分, 以及与认知推理有关的晚期正成分(LPP: 300~450 ms), 表现出一种典型的“熟人效应”。然而, 行为与ERP指标上的这些差异在公开情境下均显著减弱了。这表明个体在禁止性道德范畴领域下的道德决策遵循着一种“利己的利他主义”的道德原则, 熟人关系的不确定性会在道德决策中诱发强烈的负性情绪和认知负荷, 而声誉关注削弱了利己倾向和人际关系的不确定性所带来的厌恶情绪和认知冲突。     

你能看见我的努力吗：社会地位感知对消费者繁简偏好的影响

文章通过5个实验(包括1个预注册实验)探讨了个体感知到的相对社会地位如何影响消费者对产品繁简设计的偏好。实验1和2发现处于相对低社会地位的个体会偏好设计繁复的产品。实验3和4探究了该效应的中介机制, 即繁复设计的产品可以传递出努力线索, 而相对低社会地位个体因为重视努力进而偏好繁复设计产品。实验5通过调节变量的方式进一步验证上述机制, 发现社会地位对繁简偏好的影响只存在于那些重视努力价值的个体身上。文章推进了消费者审美偏好, 主观社会地位和消费者努力等方向的研究进展。     

Social capital and PTSD among PLWHA in China: the mediating role of resilience and internalized stigma

Post-traumatic Stress Disorder (PTSD) is frequent among people living with HIV/AIDS (PLWHA). Few studies have investigated social-psychological predictors of PTSD in China. This study aimed to examine relationships between social capital, stigma, resilience and PTSD among PLWHA in China, and to provide effective suggestions for PTSD intervention. A cross-sectional study of 520 PLWHA was conducted from November 2015 to January 2016. Survey data were collected using anonymous self-reported questionnaire. Multivariable analyses were used to examine related factors of PTSD, and causal mediation analyses were conducted to assess whether stigma and resilience were mediators. Results indicated that higher risk of PTSD was independent associated with stronger stigma, decreasing social capital and lower resilience. There was an indirect relationship of social capital on PTSD mediated through resilience and HIV-related stigma. Therefore, PTSD intervention programs should not only pay attention to the role of social capital on PTSD, but also attach importance to stigma and resilience on PTSD symptoms.     

Young children discover how to deceive in 10 days: a microgenetic study

We investigated how the ability to deceive emerges in early childhood among a sample of young preschoolers (Mean age = 34.7 months). We did this via a 10‐session microgenetic method that took place over a 10‐day period. In each session, children played a zero‐sum game against an adult to win treats. In the game, children hid the treats and had opportunities (10 trials) to win them by providing deceptive information about their whereabouts to the adult. Although children initially showed little or no ability to deceive, most spontaneously discovered deception and systematically used it to win the game by the tenth day. Both theory of mind and executive function skills were predictive of relatively faster patterns of discovery. These results are the first to provide evidence for the importance of cognitive skills and social experience in the discovery of deception over time in early childhood.     

Capacity limit of ensemble perception of multiple spatially intermixed sets

The visual system is remarkably efficient at extracting summary statistics from the environment. Yet at any given time, the environment consists of many groups of objects distributed over space. Thus, the challenge for the visual system is to summarize over multiple groups. The current study investigates the capacity and computational efficiency of ensemble perception, in the context of perceiving mean sizes of multiple spatially intermixed groups of circles. In a series of experiments, participants viewed an array of one to eight sets of circles. Each set contained four circles in the same colors, but with different sizes. Participants estimated the mean size of a probed set. The set that would be probed was either known before onset of the array (pre-cue condition) or afterwards (post-cue condition). By comparing estimation error in the pre-cue and post-cue conditions, we found that participants could reliably estimate mean sizes for approximately two sets (Experiment 1). Importantly, this capacity was robust against attention bias toward individual objects in the sets (Experiment 2). Varying the exposure time to stimulus arrays did not increase the capacity limit, suggesting that ensemble perception could be limited by an internal resource constraint, rather than the speed of information encoding (Experiment 3). Moreover, we found that the visual system could not encode and hold more individual items than ensemble representations (Experiment 4). Taken together, these results suggest that ensemble perception provides an efficient way of information processing but with constraints.     

从反义技术到反基因技术：基因治疗的新突破

脱氧寡核苷酸或肽核酸可与基因双链DNA内的特定序列结合形成三逻DNA,三链DNA结构的形成可以抑制靶基因的转录。三链DNA在治疗肿瘤和病毒感染,降低耐药性,抑制免疫等方面都可以有广泛的应用,三链DNA的提出和发现为基因治疗提供了一个新的方向。     

青少年健康促进行为的调查研究

本研究采用青少年健康促进量表(Adolescent Health Promotion scale,AHP)以长沙市450名中学生为对象,对青少年的健康促进行为水平及其在不同性别、年龄和学校类型上的差异进行了调查和分析。研究结果表明,青少年在人际支持行为上得分最高,而在运动行为上得分最低;经分析,运动行为及人际支持行为上存在明显的性别差异;AHP的六个因子在不同年龄段和学校类型上均呈现显著差异。     

Different attitudes toward humor between Chinese and American students: evidence from the Implicit Association Test

Although cross-cultural research indicates that Chinese people demonstrate less humor than do Americans, little research addresses the reasons. This cross-cultural difference may be largely due to different implicit attitudes toward humor held by Chinese and Americans, deeply rooted in the two cultural traditions. Both self-report evaluation and the Implicit Association Test (IAT) were used to compare Chinese and American attitudes toward humor. Although 60 Chinese undergraduate students showed no significant difference from 33 American exchange students in explicit attitudes toward humor, the former associated humor more frequently with unpleasant adjectives and seriousness with pleasant adjectives on the IAT; the opposite pattern was found for the American group. This indicated a negative implicit attitude toward humor among the Chinese students.     

Multiple trajectories of depressive symptoms in middle and late life: racial/ethnic variations

This research aims to identify distinct courses of depressive symptoms among middle-aged and older Americans and to ascertain how these courses vary by race/ethnicity. Data came from the 1995-2006 Health and Retirement Study which involved a national sample of 17,196 Americans over 50 years of age with up to six repeated observations. Depressive symptoms were measured by an abbreviated version of the Center for Epidemiologic Studies Depression scale. Semiparametric group based mixture models (Proc Traj) were used for data analysis. Six major trajectories were identified: (a) minimal depressive symptoms (15.9%), (b) low depressive symptoms (36.3%), (c) moderate and stable depressive symptoms (29.2%), (d) high but decreasing depressive symptoms (6.6%), (e) moderate but increasing depressive symptoms (8.3%), and (f) persistently high depressive symptoms (3.6%). Adjustment of time-varying covariates (e.g., income and health conditions) resulted in a similar set of distinct trajectories. Relative to White Americans, Black and Hispanic Americans were significantly more likely to be in trajectories of more elevated depressive symptoms. In addition, they were more likely to experience increasing and decreasing depressive symptoms. Racial and ethnic variations in trajectory groups were partially mediated by SES, marital status, and health conditions, particularly when both interpersonal and intrapersonal differences in these variables were taken into account.     

哲学研究的理论自觉

一、哲学研究的学术性与现实性的双重自觉面向现实和坚持学术,是当代中国哲学研究积淀的宝贵经验。哲学是思想中所把握到的时代和自己时代精神的精华,面向现实生活是哲学的天命。任何真诚的哲学思考不仅深入自然、