工科院校大学生网络成瘾与人格特征的关系

目的了解工科院校大学生网络成瘾现状及其与人格特征的关系,为多方面理解网络成瘾及其矫治提供依据。方法采取随机抽样的方法从西安市某工科院校抽取学生共262人,用网络成瘾量表和艾森克人格量表对研究对象进行测试。结果网络成瘾检出率为41.8%;男生网络成瘾程度显著高于女生;大三、大四学生网络成瘾程度显著高于大一学生,大三学生成瘾程度显著高于大二学生和大四学生;大学生的网络成瘾程度与神经质、精神质呈显著的正相关,与掩饰性呈显著的负相关,与内外向的相关不显著。结论人格特征在一定程度上可以预测网络成瘾的程度。     

Do 10-month-old infants understand others' false beliefs?

As adults, we know that others’ mental states, such as beliefs, guide their behavior and that these mental states can deviate from reality. Researchers have examined whether young children possess adult-like theory of mind by focusing on their understanding about others’ false beliefs. The present research revealed that 10-month-old infants seemed to interpret a person’s choice of toys based on her true or false beliefs about which toys were present. These results indicate that like adults, even preverbal infants act as if they can consider others’ mental states when making inferences about others’ actions.     

孔子为学思想及现代启示

国以民为本,家以孝为先,做人以德为重,修身以学为主。学为立世之本,学可以明智、学可以致用、学可以立德。孔子为学思想博大精深,给后人留下了宝贵的经验和启示。     

Working memory can enhance unconscious visual perception

We demonstrate that unconscious processing of a stimulus property can be enhanced when there is a match between the contents of working memory and the stimulus presented in the visual field. Participants first held a cue (a colored circle) in working memory and then searched for a brief masked target shape presented simultaneously with a distractor shape. When participants reported having no awareness of the target shape at all, search performance was more accurate in the valid condition, where the target matched the cue in color, than in the neutral condition, where the target mismatched the cue. This effect cannot be attributed to bottom-up perceptual priming from the presentation of a memory cue, because unconscious perception was not enhanced when the cue was merely perceptually identified but not actively held in working memory. These findings suggest that reentrant feedback from the contents of working memory modulates unconscious visual perception.     

Different brain mechanisms between stereotype activation and application: evidence from an ERP study

Stereotyping involves two processes in which first, social stereotypes are activated (stereotype activation), and then, stereotypes are applied to given targets (stereotype application). Previous behavioral studies have suggested that these two processes are independent of each other and may have different mechanisms. As few psychophysiological studies have given an integrated account of these stages in stereotyping so far, this study utilized a trait categorization task in which event-related potentials (ERPs) were used to explore the brain mechanisms associated with the processes of stereotype activation and its application. The behavioral (reaction time) and electrophysiological data showed that stereotype activation and application were elicited respectively in an affective valence identification subtask and in a semantic content judgment subtask. The electrophysiological results indicated that the categorization processes involved in stereotype activation to quickly identify stereotypic and nonstereotypic information were quite different from those involved in the application. During the process of stereotype activation, a P2 and N2 effect was observed, indicating that stereotype activation might be facilitated by an early attentional bias. Also, a late positive potential (LPP) was elicited, suggesting that social expectancy violation might be involved. During the process of the stereotype application, electrophysiological data showed a P2 and P3 effect, indicating that stereotype application might be related to the rapid social knowledge identification in semantic representation and thus may be associated with an updating of existing stereotypic contents or a motivation to resolve the inconsistent information. This research strongly suggested that different mechanisms are involved in the stereotype activation and application processes.     

Mother–Child Book‐Sharing and Children's Storytelling Skills in Ethnically Diverse,Low‐Income Families

The present study examined book‐sharing interactions between mothers and their 4‐year‐old children from African American (n = 62), Dominican (n = 67), Mexican (n = 59) and Chinese (n = 82) low‐income U.S. families, and children's independent storytelling skills one year later. Mothers' book‐sharing style was analysed in terms of how much storyline information they provided (story components), the extent to which they asked children about the story (dialogic emphasis) and which features of the story they highlighted (story content). African American mothers referred to more story components than did Dominican mothers, and Mexican mothers surpassed Dominican and Chinese mothers. Mothers of all groups were low in dialogic emphasis; they predominantly narrated rather than asked about the story, although Mexican mothers asked relatively more questions than did African American and Dominican mothers. In terms of content, compared with other groups, African American mothers were most likely to emphasize ‘individual goals’, and Chinese mothers were most likely to emphasize ‘negative consequences’. Latino mothers were more likely to emphasize ‘emotions’ than were Chinese mothers. Children's storytelling styles partially mirrored those seen in their mothers. Mothers' dialogic emphasis related to children's contributions to book‐sharing, which in turn predicted children's later independent storytelling skills. Copyright © 2014 John Wiley & Sons, Ltd.     

Attitude of Medical School Students in China Towards Genetic Testing and Counseling Issues in FXS

Fragile X syndrome (FXS) is the most common form of inherited intellectual disability. However, genetic testing protocols and genetic counseling guidelines for FXS are not yet established in mainland China. In the present study, we conducted a comprehensive analysis using a self-administered questionnaire among students at the Xiangya medical school to investigate their attitude towards genetic testing and counseling issues of FXS. We have gained a general understanding of the attitudes of medical students towards these FXS issues in China. This information is of immense importance to develop appropriate genetic tests and to train counselors for FXS. As the medical school students surveyed are prospective physicians who will be a part of the Chinese health system, our survey was focused on the basic knowledge of FXS, population-based FXS screening, confidentiality and reproductive options for mutation carriers. The study demonstrated that only less than one third of the participants had heard about FXS. 94.6 % of participants were in favor of FXS screening for women in their reproductive age who had a genetic history of FXS. Furthermore, only half of the participants would inform their families about their genetic status in case of positive test results, and more than half of the participants supported natural conception and prenatal diagnosis for FXS mutation carriers. Additional findings and research implications are also discussed. This survey targeting potential doctors provides important information for the development of FXS genetic test and counselor training for the Chinese health system.     

股票投资决策中的处置效应:心理机制及调节变量

处置效应是股票投资决策中的典型现象.它是指当投资者面对盈利时急于卖出股票,而当他们面对亏损时长时间持有股票的现象.自发现处置效应以来,研究者就不断探索其心理机制及其调节变量.目前,大量研究者从前景理论、认知失调理论、过度自信理论以及后悔理论等方面探索处置效应的心理机制.文章最后指出了当前在处置效应的研究中仍然存在的问题,并对未来的研究趋势进行了展望.     

Changes of hardness and electronic work function of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass on annealing

The hardness and electronic work function (EWF) of a bulk metallic glass, namely Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5, have been studied experimentally, with an emphasis on the effect of heat treatments. The glass was annealed at different time and temperatures, and its hardness and EWF measured using the Rockwell indentation technique and a scanning Kelvin probe system, respectively. It is found that the EWF decreases with annealing time and temperature, whereas the hardness increases. This study shows a close relationship between hardness and EWF, indicating that the EWF could be a sensitive parameter for characterising and investigating the mechanical behaviour of BMG at the electronic level.