青少年社交网站使用对自我概念清晰性的影响:社会比较的中介作用

为探讨青少年的社交网站使用和社会比较对自我概念清晰性的影响及其作用机制,采用社交网站使用强度问卷、社会比较倾向问卷和自我概念清晰问卷对697名中学生进行调查,结果发现:(1)社交网站使用强度和社会比较倾向呈显著正相关,而社交网站使用强度和社会比较倾向都与自我概念清晰性呈显著负相关。(2)社交网站使用对自我概念清晰性不仅有显著的直接预测效应,还能通过社会比较倾向的间接作用对自我概念清晰性产生影响。     

The effect of company recruitment web site orientation on individuals’ perceptions of organizational attractiveness

The use of company web pages to attract prospective job applicants has experienced tremendous growth in recent years. To date, very little is known about the process by which recruitment web sites influence individuals’ desire to pursue employment with an organization. This study attempts to address this issue by using an experimental design to investigate the relationships among recruitment web site orientation, individuals’ expectations concerning the use of Internet technology, web site usability, and organizational attractiveness. Survey results from 252 business students indicated that web site orientation and outcome expectancy influenced organizational attractiveness perceptions through influencing the perceived usability of the website. The implications of such results for firms interested in using recruitment web sites to attract applicants are discussed.     

The Effect of Social Network Site Use on Appearance Investment and Desire for Cosmetic Surgery Among Adolescent Boys and Girls

Although adolescents frequently use social network sites, little is known about whether the highly visual and self-presentation-centered character of such sites affects body-related outcomes such as investment in appearance and appearance-changing strategies. Due to gender differences in appearance pressures and appearance ideals, these effects of social network sites on body-related outcomes may differ between boys and girls. The aim of the current study was therefore to investigate the relationships between social network site use, appearance investment, and desire for cosmetic surgery among adolescents and to compare the experiences of boys and girls. We used data from a two-wave panel study among 604 Dutch adolescents (aged 11–18). Structural equation modeling showed that social network site use positively predicted adolescents’ desire to undergo cosmetic surgery indirectly through increased appearance investment. The relationships found between social network site use, investment in appearance, and cosmetic surgery desire applied to boys and girls and were not moderated by gender.     

Safer road users: Investigating the influence of PRIME road markings on motorcycle rider behaviour

Innovative road markings for motorcyclists, designed as Perceptual Rider Information for Maximising Expertise and Enjoyment (PRIMEs) were installed on the approach to demanding left-hand bends at six trial sites and a comparison site across the West Highlands of Scotland. These road markings were presented as a series of ‘gateways’ to encourage safer riding. Video data were collected to measure motorcycle speed, lateral position, braking and use of the road markings, before and after the PRIMEs were installed. A total of 9,594 motorcyclists were observed. Across the six trial sites, statistically significant reductions in speed were observed (at three sites). Significant changes in lateral position were observed at the final PRIME gateway marking (at one site), and at the apex of the bend (at three sites). Reduced braking was observed at three sites and there was a statistically significant increase in the use of PRIME road markings across four of the sites. No statistically significant effects were observed at the comparison site. These findings are discussed in relation to sustained effects and aspects of the ‘Safe System’ approach that are relevant to reducing motorcycle casualties.     

Friend networking sites and their relationship to adolescents' well-being and social self-esteem.

The aim of this study was to investigate the consequences of friend networking sites (e.g., Friendster, MySpace) for adolescents' self-esteem and well-being. We conducted a survey among 881 adolescents (10-19-year-olds) who had an online profile on a Dutch friend networking site. Using structural equation modeling, we found that the frequency with which adolescents used the site had an indirect effect on their social self-esteem and well-being. The use of the friend networking site stimulated the number of relationships formed on the site, the frequency with which adolescents received feedback on their profiles, and the tone (i.e., positive vs. negative) of this feedback. Positive feedback on the profiles enhanced adolescents' social self-esteem and well-being, whereas negative feedback decreased their self-esteem and well-being.     

Personality in cyberspace: personal Web sites as media for personality expressions and impressions

This research examined the personality of owners of personal Web sites based on self-reports, visitors' ratings, and the content of the Web sites. The authors compared a large sample of Web site owners with population-wide samples on the Big Five dimensions of personality. Controlling for demographic differences, the average Web site owner reported being slightly less extraverted and more open to experience. Compared with various other samples, Web site owners did not generally differ on narcissism, self-monitoring, or self-esteem, but gender differences on these traits were often smaller in Web site owners. Self-other agreement was highest with Openness to Experience, but valid judgments of all Big Five dimensions were derived from Web sites providing rich information. Visitors made use of quantifiable features of the Web site to infer personality, and the cues they utilized partly corresponded to self-reported traits.     

MySpace and Facebook: applying the uses and gratifications theory to exploring friend-networking sites.

The increased use of the Internet as a new tool in communication has changed the way people interact. This fact is even more evident in the recent development and use of friend-networking sites. However, no research has evaluated these sites and their impact on college students. Therefore, the present study was conducted to evaluate: (a) why people use these friend-networking sites, (b) what the characteristics are of the typical college user, and (c) what uses and gratifications are met by using these sites. Results indicated that the vast majority of college students are using these friend-networking sites for a significant portion of their day for reasons such as making new friends and locating old friends. Additionally, both men and women of traditional college age are equally engaging in this form of online communication with this result holding true for nearly all ethnic groups. Finally, results showed that many uses and gratifications are met by users (e.g., "keeping in touch with friends"). Results are discussed in light of the impact that friend-networking sites have on communication and social needs of college students.     

Wise: Web Interface for Statistics Education

The Web Interface for Statistics Education (WISE) project includes a World-Wide Web site to support the teaching of introductory social-science statistics courses. The site provides easy access to data bases, archived discussion lists, electronic journals, links to other sites focused on relevant statistics topics, and it includes a prototype of an on-line tutorial. The tutorial, which is the focus of the current paper, is designed to capitalize on special capabilities offered by the Web. The easy linkage between Web pages provides support for a highly interactive tutorial, which uses “failure-based” learning and immediate feedback. Students rated the tutorial as easy to use and indicated that it would have improved their initial statistics course.     

Factors influencing evaluations of web site information

This study investigated the effect of first-person and third-person perceptions of web site information. Responses from a telephone survey of 226 participants in a stratified random sample indicated that (1) most participants had higher evaluations for television news than for news received on the Internet; (2) a third-person effect was present in that most respondents generally thought that other people found the Internet easier to use than they did, and that other people were more likely to believe Internet information and trust the sources of Internet information than they would. Also, (3), evaluations of information on a particular web site could be increased by providing links to other web sites on the same topic. Perhaps links to other web sites may serve as either a "referencing" function or a social confirmation function to increase evaluations of web site information.     

Impact of language anxiety and self-efficacy on accessing Internet sites.

Language interface plays a critical role as the foundation of communication. Possessing greater fluency in the host language can lead to increased opportunities for interaction with host members. This research is to examine the impact of language and Internet usage anxiety and self-efficacy on the intended uses of Internet sites, respectively. By the same token, whether Internet/language self-efficacy would mediate the effects of Internet/language anxiety on the intention of the Internet site use is also examined. A valid sample of 368 undergraduates was tested in this study. The path analysis results mostly supported the model tested. The results display that the anxiety of language and Internet use have significantly influenced self-efficacy of Internet use and language, respectively. Anxiety about language and Internet use have also significantly influenced the intention to use Internet sites individually. Furthermore, language self-efficacy has significantly influenced the intention to use Internet sites, but Internet self-efficacy has not. The implications are discussed at the end of the paper.     

Transport of tools to food sites in tufted capuchin monkeys (<Emphasis Type="Italic">Cebus apella</Emphasis>)

Tool use and transport represent cognitively important aspects of early hominid evolution, and nonhuman primates are often used as models to examine the cognitive, ecological, morphological and social correlates of these behaviors in order to gain insights into the behavior of our early human ancestors. In 2001, Jalles-Filho et al. found that free-ranging capuchin monkeys failed to transport tools (stones) to food sites (nuts), but transported the foods to the tool sites. This result cast doubt on the usefulness of Cebus to model early human tool-using behavior. In this study, we examined the performance of six captive tufted capuchin monkeys (Cebus apella) in a tool transport task. Subjects were provided with the opportunity to transport two different tools to fixed food reward sites when the food reward was visible from the tool site and when the food reward was not visible from the tool site. We found that the subjects quickly and readily transported probing tools to an apparatus baited with syrup, but rarely transported stones to a nut-cracking apparatus. We suggest that the performance of the capuchins here reflects an efficient foraging strategy, in terms of energy return, among wild Cebus monkeys.     

A new fuzzy multicriteria evaluation method for group site selection in GIS

Multiple criteria group site selection problems involve a group of individuals evaluating a set of alternative sites on the basis of multiple criteria. This paper presents an application of a new fuzzy algorithm for finding and exploring potential solutions to these problems in a raster Geographical Information System (GIS) environment. Linguistic assessments from decision‐makers are represented as triangular fuzzy numbers (TFN's), which are adjusted for uncertainty in the source data and their relationship to suitability by using an approach based on type‐2 fuzzy sets. The first aggregation of inputs is a compensatory one based on fuzzy multiattribute decision‐making (MADM) theory. An adjusted aggregation then factors in conflicts, risks and uncertainties to enable a variety of compensatory and non‐compensatory outcomes to be generated based on decision‐maker preferences. The algorithm was implemented in ArcView GIS as part of an ongoing collaborative project with Brisbane Airport. This paper outlines the fuzzy algorithm and its use in site selection for a recycling facility on the Brisbane Airport site. Copyright © 2005 John Wiley & Sons, Ltd.     

被动性社交网站使用与主观幸福感的关系:中介效应分析

为探讨被动性社交网站使用行为、上行社会比较与主观幸福感的两个成分——情绪和生活满意度的关系,采用问卷法对1168名大学生进行调查。结果发现:(1)被动性社交网站使用与上行社会比较和消极情绪显著正相关,与积极情绪以及生活满意度显著负相关;上行社会比较与积极情绪以及生活满意度都呈显著负相关,与消极情绪显著正相关;积极情绪与生活满意度显著正相关;消极情绪与生活满意度显著负相关;(2)被动性社交网站使用对情绪和生活满意度都没有直接的预测作用,但能通过上行社会比较的中介作用预测积极情绪、消极情绪和生活满意度;(3)被动性社交网站使用还可以通过两条链式中介作用预测生活满意度:通过上行社会比较和积极情绪的链式中介作用;通过上行社会比较和消极情绪的链式中介作用。研究结果进一步揭示了被动性社交网站使用与主观幸福感的关系及其作用机制,能为网络时代个体维护和提升主观幸福感提供有益启示。     

错失焦虑与大学生被动性社交网站使用的交叉滞后分析

为探讨大学生错失焦虑与被动性社交网站使用间的准因果关系,采用错失焦虑量表和被动性社交网站使用量表对403名大学生进行间隔8个月的两阶段追踪调查。结果发现：(1)错失焦虑和被动性社交网站使用的自回归路径系数显著,存在风险累积效应。(2)错失焦虑与被动性社交网站使用在8个月内能够互相预测,存在强化螺旋效应。(3)错失焦虑与被动性社交网站使用的交叉滞后效应性别差异不显著,存在跨性别趋同效应。结果支持了强化螺旋模型,表明错失焦虑与大学生被动性社交网站使用能够交互影响。     

Supporting Grass Roots Implementation of an Evidence-Based Psychotherapy Through a Virtual Community of Practice: A Case Example in the Department of Veterans Affairs

In contrast to a top-down dissemination approach, the present approach identified existing clinicians using an evidence-based psychotherapy (EBP), dialectical behavior therapy, throughout the Department of Veterans Affairs (VA) system, and created a virtual community of practice (VCoP) to facilitate sharing of materials, resources, information, and clinical expertise. This “bottom-up” or grassroots approach to building a VCoP has potential to support the adoption of EBPs in settings without the resources required to support a large-scale training and consultation initiative. The objective of the current paper is to describe creation, dissemination, and web analytics data of this VCoP to connect providers using an EBP in a national health care system. The VCoP was created using SharePoint and development included user acceptance testing. Dissemination was achieved through a variety of outlets, including use of e-mail listservs, promotion on internal Web sites, and presentations. Monthly Web analytics data were collected on number of unique users, location of users, and number of requests or visits. Monthly Web analytics data indicated that the site was visited every workday in the first year and consistently across 5 years. Number of unique users and number of requests was relatively stable with increases corresponding to efforts to increase site engagement. Location of users demonstrates a wide reach across the VA system. Web analytics data indicate sustained use of the site by providers and methods to facilitate and increase use and interaction appeared to have a positive impact. Future research should investigate the effectiveness of such a strategy on provider behavior.     

Mechanisms of what-where-when memory in black-capped chickadees (Poecile atricapillus): do chickadees remember "when"?

Integrated what-where-when memory, sometimes called 'episodic-like' memory, has been shown to occur in a number of animals, including food-storing birds and rodents. It is not always clear in these studies, however, what aspect of "when" is remembered. We examined memory for what, where, and when in black-capped chickadees Poecile atricapillus in a procedure designed to dissociate memory for elapsed time (how long ago) from memory for a point in time, the sense of "when" implied in most discussions of episodic or episodic-like memory. Chickadees searched for food in multiple trials that each involved a two-phase procedure. In Phase 1, birds found preferred mealworms in half the sites on one side of an aviary and less preferred sunflower seeds in half the sites on the other side of the aviary. In Phase 2, following a retention interval, birds searched in the aviary with fresh sunflower seeds placed in the sites that held seeds in Phase 1 but either fresh or degraded mealworms in the sites that held mealworms in Phase 1. Whether a site held fresh or degraded worms depended on either when during the day Phase 1 had occurred (Group When), how long ago Phase 1 had occurred (Group HLA), or both (Group When + HLA). Chickadees in all three groups were able to discriminate where and when palatable worms were to be found, but there were temporal limitations on the use of HLA and When + HLA cues that were not found for the use of When cues.     

Cognitive and Emotional Processes in Individuals and Commercial Web sites

This research reports how banner ads are responded to in Web sites that emphasize either emotion or cognition. It also looks at the moderating effects of individuals’ own levels of need for cognition and need for emotion on banner responsiveness in the two kinds of Web sites. Recall and attitude toward banners are consistently better when their context is an emotion-based Web site. Need for cognition, but not need for emotion moderates this effect. For ad recall, it is better to be lower in need for cognition in a cognitive Web site, but higher in need for cognition on an emotional Web site. For attitude toward the banner and purchase intention, however, it is better to be higher in need for cognition in a cognitive Web site, but lower in need for cognition on an emotional Web site. The results are discussed in terms of advertising context theory that has been developed in applications to the traditional media like print and broadcast, but here is shown to be applicable to the Web.     

Exploring the motivations of Facebook use in Taiwan

The current study explored the motivations of online social network use among a sample of the general population in Taiwan (N=4,346). It investigated how seven different motivations to use Facebook predicted the intensity of Facebook use and content-generation behaviors on Facebook. Results showed that the motivation to use Facebook for posting and viewing status updates was the strongest predictor of Facebook intensity, while the motivation to view and share photographs was the strongest predictor of content-generation behavior on the site. Results are discussed in terms of expanding motivations to use Facebook to the study of social networking sites and other new and social media.     

Free to be me: The relationship between the true self,rejection sensitivity,and use of online dating sites

Prior research (Blackhart et al., 2014) found that rejection-sensitive individuals are more likely to use online dating sites. The purpose of the current research was to explain the relationship between rejection sensitivity and online dating site usage. Study 1 examined whether true self mediated the relation between rejection sensitivity and online dating. Study 2 sought to replicate the findings of Study 1 and to examine whether self-disclosure moderated the relationship between true self and online dating in the mediation model. Results replicated those found by Blackhart et al. and also found that true self mediated the relationship between rejection sensitivity and online dating site usage. These findings suggest that rejection-sensitive individuals feel they can more easily represent their “true” selves in online environments, such as online dating sites, which partially explains why they are more likely to engage in online dating.     

Homing in rocky intertidal fish. Are Lipophrys pholis L. able to perform true navigation?

Although navigation is common in many animals, only a few perform true navigation, meaning that they have the ability to return to a given place by relying on indirect cues obtained at the release site (i.e., by relying on information from a “map and compass” mechanism). The common intertidal fish, Lipophrys pholis, is thought to have homing abilities through a mechanism that primarily makes use of familiar landmarks (i.e., piloting). Anecdotal reports that individuals return to their home pools after release at unfamiliar sites suggest that L. pholis might use cues collected at the release site to find their way back (i.e., they might use map and compass information). Using a completely artificial setup, we tested the homing abilities of L. pholis as a function of age, sex, and familiarity with the release site. The findings showed that motivation for homing is present only in the adult phase and is independent of sex and/or familiarity with the release site. Moreover, adults released at a completely unfamiliar place oriented themselves in a direction roughly similar to that of their home pools. The fact that L. pholis were tested in a complete artificial environment means that hydrodynamic cues can be excluded as playing a role in this process and restricts the candidate options (e.g., magnetic cues). The ability to perform navigation based on a “map and compass” mechanism raises many interesting questions about the learning process, once these individuals have restricted home ranges during their lives. In vertebrate navigation, the cues used during the navigation process are a question of debate, and L. pholis offers an outstanding model to test hypotheses and ultimately provide answers.