社交网络（SNS）中的自我呈现及其影响因素

基于符号互动论而提出的自我呈现概念及其理论,以往常被用于解释人们现实生活中的面对面人际互动行为。近些年。社交网络逐渐成为人际互动行为发生的重要场域。由于社交网络自身的独特之处,人们在社交网络中的自我呈现,与现实面对面、传统计算机媒介交流中的自我呈现有诸多不同。社交网络中的自我呈现更受到目标观众、动机、人格特征、性别和文化等方面的显著影响。西方的“富者更富理论”和“社会补偿理论”,在解释社交网络中自我呈现现象本质时各执一词,而国内的“补充我／补偿我理论”或许能较好地解决这一理论问题。未来的SNS自我呈现研究应在扩展被试群体范围、SNS网站种类和影响因素变量几方面继续前行。     

Self-absorbed and socially (network) engaged: Narcissistic traits and social networking site use

Across two studies, the current research investigated how different dimensions of narcissism (grandiosity/agentic extraversion, entitlement/self-centered antagonism, vulnerability/narcissistic neuroticism) relate to social networking site (SNS) use and behaviors. Study 1 employed a community sample of young adults, whereas Study 2 examined college students. Participants completed assessments of narcissism and SNS use through an online survey. Grandiosity/agentic extraversion was generally associated with greater levels of downward social comparison relative to the other two dimensions. Entitlement/self-centered antagonism generally showed weak correlations with SNS outcomes. Vulnerability/narcissistic neuroticism was generally associated with greater upward social comparison and perceived social exclusion relative to the other two dimensions. Results suggest that SNS experiences may vary depending on the dimensions of narcissism.     

Memory of captured prey in three web spiders (Araneae: Araneidae, Linyphiidae, Tetragnathidae)

We gave three web spiders, Argiope argentata (Araneidae), Nephila clavipes (Tetragnathidae) and Neriene peltata (Linyphiidae), large and small prey which we then removed from the spiders’ webs. Following prey removal the spiders searched by walking around the web and pulling on its threads for several minutes, stopping when allowed to find the prey. Spiders that captured larger prey searched for longer. Searching behaviour was different from the spiders’ responses to disturbance and did not appear to be elicited by proximal cues. Instead, the spiders formed memories of captured prey that included details about prey size and freshness. Received: 3 March 2000 / Accepted after revision: 24 July 2000     

Attack and defensive behaviors in the albino mouse

Attack by dominant male colony mice on intruders included chasing and lateral attack behaviors, while the corresponding intruder behaviors were flight, boxing, and checking. Both of these are similar to the attack and defensive behaviors of colony rats and intruders. However, mice did not show a significant constraint on bites to ventral areas, and the rat defensive behavior of lying on the back, which is effective because of this constraint, was rare; the corresponding “on-top” behavior of attackers was almost absent in mice. These findings strongly support the view that intraspecific attack and defensive behaviors, and target sites for bites, are interrelated factors facilitating effective but nonlethal agonistic interactions in muroid rodents.     

Inferring causal networks from observations and interventions

Information about the structure of a causal system can come in the form of observational data—random samples of the system's autonomous behavior—or interventional data—samples conditioned on the particular values of one or more variables that have been experimentally manipulated. Here we study people's ability to infer causal structure from both observation and intervention, and to choose informative interventions on the basis of observational data. In three causal inference tasks, participants were to some degree capable of distinguishing between competing causal hypotheses on the basis of purely observational data. Performance improved substantially when participants were allowed to observe the effects of interventions that they performed on the systems. We develop computational models of how people infer causal structure from data and how they plan intervention experiments, based on the representational framework of causal graphical models and the inferential principles of optimal Bayesian decision‐making and maximizing expected information gain. These analyses suggest that people can make rational causal inferences, subject to psychologically reasonable representational assumptions and computationally reasonable processing constraints.     

Aide à la prise en compte de contraintes liées aux utilisateurs lors de la conception d'un hypermédia : une étude auprès de concepteurs de sites Web

This study aims at supporting Web designers to consider more user constraints and addressed why designers focus on client constraints and experience difficulties considering user ones. Novice and professional Web designers had either to deal with ergonomic constraints or to ask an human factors specialist for any information they needed to create a site. Study results showed that client constraints were always considered as preponderant by designers regardless of whether or not they had been prescribed by the client. This contrasts sharply with user constraints which had to be prescribed to designers right from the beginning of their activities in order to be considered and respected.     

Couples with Intimate Partner Violence Seeking Relationship Help: Associations and Implications for Self‐Help and Online Interventions

In‐person conjoint treatments for relationship distress are effective at increasing relationship satisfaction, and newly developed online programs are showing promising results. However, couples reporting even low levels intimate partner violence (IPV) are traditionally excluded from these interventions. To improve the availability of couple‐based treatment for couples with IPV, the present study sought to determine whether associations with IPV found in community samples generalized to couples seeking help for their relationship and whether web‐based interventions for relationship distressed worked equally well for couples with IPV. In the first aim, in a sample of 2,797 individuals who were seeking online help for their relationship, the levels and correlates of both low‐intensity and clinically significant IPV largely matched what is found in community samples. In the second aim, in a sample of 300 couples who were randomly assigned to a web‐based intervention or a waitlist control group, low‐impact IPV did not moderate the effects of the intervention for relationship distress. Therefore, web‐based interventions may be an effective (and easily accessible) intervention for relationship distress for couples with low‐intensity IPV.     

A Review of “Handbook for the Study of the Historical Jesus”

SUMMARY

The library Web site is a significant access point to a library's collections, resources, and services. A Web site can and should provide information about the library in a way that can be efficiently navigated and used by all library patrons. The usability of a library Web site can be improved through changes in organization and design informed by the experiences of real users. User expectations should be primary in determining the content, purpose, organization, and design of the site.     

Third Way Café

ABSTRACT

This article describes how one web site, Third Way Cafe, uses the Internet to introduce Anabaptist Christian perspectives into society's marketplace of ideas, and provides a prophetic witness on faith and contemporary issues.

The article examines why Anabaptist Mennonites have historically worked at peace and justice issues, whether peace and justice can actually be furthered or accomplished on the web, how technology impacts the message, and what kinds of responses have come from the audience.

The Internet, while not a face-to-face medium, has demonstrable capability for putting information at the fingertips of people who have keen (or marginal) interest in peacemaking and in connecting/providing a network for persons working and interested in peace and justice issues.