Extending the technology acceptance model to mobile telecommunication innovation: The existence of network externalities

• Consumer acceptance of technological innovations is crucial to marketing new products. According to the most influential model in this area, the Technology Acceptance Model (TAM), perceived usefulness (PU) and perceived ease of use (PEOU) determine users' behavioural intentions to use or purchase a system or product. In the specific context of network externalities, a sense of utility that arises from the number of users (NOU) is considered as important as technology‐specific valuation. This study conducted an empirical survey to examine the effects of TAM and network externalities on the acceptance of Multimedia Messaging Services (MMS), an innovation in the field of mobile telecommunications. The results confirm the effectiveness of the TAM and find that network externalities effect affects users' acceptance to this mobile innovations. Accordingly, the TAM can be applied to predict consumer's acceptance to the mobile telecommunication innovations in the presence of network externalities.

Copyright © 2008 John Wiley & Sons, Ltd.     

基于fMRI的自上而下字母加工神经机制的研究

人们在识别自己所熟悉的物体时, 不仅依赖于对输入信息的感知而且还会受到自上而下调节机制的影响。研究者基于功能磁共振成像(fMRI), 利用虚幻探测范式对自上而下字母加工的神经网络进行研究。该研究要求被试从纯噪声(实际没有任何字母)中探测字母。通过对fMRI数据进行心理生理交互效应分析, 发现当被试从纯噪声图片中“看”到字母时, 多个脑区的活动由于受到来自于右侧梭状回的影响而加强。该发现表明自上而下的字母加工网络不但包含负责字母形状和语音加工的脑区, 还涉及一些负责高级认知加工的区域。     

The other-race effect develops during infancy: evidence of perceptual narrowing

Experience plays a crucial role in the development of face processing. In the study reported here, we investigated how faces observed within the visual environment affect the development of the face-processing system during the 1st year of life. We assessed 3-, 6-, and 9-month-old Caucasian infants' ability to discriminate faces within their own racial group and within three other-race groups (African, Middle Eastern, and Chinese). The 3-month-old infants demonstrated recognition in all conditions, the 6-month-old infants were able to recognize Caucasian and Chinese faces only, and the 9-month-old infants' recognition was restricted to own-race faces. The pattern of preferences indicates that the other-race effect is emerging by 6 months of age and is present at 9 months of age. The findings suggest that facial input from the infant's visual environment is crucial for shaping the face-processing system early in infancy, resulting in differential recognition accuracy for faces of different races in adulthood.     

Preliminary evaluation of an after-school resistance training program for improving physical fitness in middle school-age boys

Most after-school physical activity programs for youth focus on aerobic games and activities. The purpose of this study was to evaluate the efficacy of an after-school resistance training program on improving the physical fitness of middle school-age boys. 22 boys (M = 13.9 yr., SD = .4 yr.) participated in a periodized, multiple-set, 9-wk. (2x/week) resistance training program. All subjects were pre- and post-tested on their 10-repetition maximum squat, 10-repetition maximum bench press, vertical jump, medicine ball toss, flexibility, and also percentage of body fat and the progressive aerobic cardiovascular endurance run (PACER). Statistical analysis indicated that subjects significantly improved performance on the squat (19%), bench press (15%), flexibility (10%), vertical jump (5%), medicine ball toss (12%), and the PACER (36%). Although this design minus a control group limits interpretation, this after-school resistance-training program can improve muscular fitness and cardiovascular fitness in boys and should be replicated with appropriate experimental controls.     

大学生的国家科技成就刻板印象

利用信号检测论的方法对130名大学生的国家科技成就刻板印象进行研究。结果发现,被试对中国近现代及当代科技成就判断标准的自然对数值显著高于对中国古代、美国近现代及当代科技成就判断标准的自然对数值(p<0.001),同时,被试对中国古代、美国近现代及当代科技成就的判断标准自然对数值没有显著差异(p>0.05),从而证明了大学生群体中明显存在着国家科技成就刻板印象。进一步的含义表明,大学生对中国古代科技成就依然保持绝对的自信,对中国近现代及当代科技成就的自卑并没有显著改变。在被试对2005年中国科技竞争力在全球的排名进行估计时,高估的人数显著多于低估的人数(p<0.001),从而表明,大学生对中国当前及未来科技成就的自信心开始建立。     

靶刺激变换对情景知觉过程中注视控制的影响

研究考察了情景浏览过程中靶刺激变换对注视控制的影响,运用了眼动记录技术。实验采用2(靶刺激位置:左、右)×2(变换方式:增加靶刺激、删除靶刺激)的重复测量设计。结果发现:(1)靶刺激变换方式对靶刺激所属兴趣区首次注视启动时间存在显著性影响,并对靶刺激所属兴趣区的前3次注视持续时间产生影响;(2)靶刺激位置属性对兴趣区首次注视启动时间、前3次注视持续时间均不存在显著影响。结果表明,与靶刺激增加相比,靶刺激的删除更易引起被试的优先注意,而且会抑制首次注视过程中的信息提取。     

浅析消费领域中的审美现象

随着经济文化的发展和生活水平的提高,消费领域中出现了很多与审美相关的消费。本文透过这些现象分析消费者进行审美消费的内在动因,并且探讨一些应对思路。     

毛泽东的信仰轨迹：从有神论到无神论

1893年,毛泽东出生在湖南一个偏僻闭塞的山村,像大多数中国农村妇女一样,母亲高氏信佛。因为头两个孩子在襁褓中夭折,所以毛泽东出生后,高氏曾多方祈求神佛保佑,虔诚吃“观音斋”。关于童年的生活,毛泽东说:“我父亲早年和中年都不信神,可是我母亲却是一个虔诚的佛教徒。她向自     

达米特的直觉主义数学哲学观——访英国哲学家、牛津大学哲学系迈克尔·达米特教授

迈克尔·达米特(M ichael Dummett)是20世纪英国最著名的哲学家之一,他的主要贡献在分析哲学、数学哲学、语言哲学和逻辑哲学等领域,尤其是他关于弗雷格哲学的研究奠定了他的整个哲学生涯,他是20世纪反实在论和数学哲学中直觉主义的主要代表人物,其主要著作有:《弗雷格:语言哲学》(1973);《直觉主义的成分)(1977);《弗雷格哲学的解释》(1981);《弗雷格和其他哲学家》(1991);《弗雷格:数学哲学》(1991);《形而上学的逻辑基础》(1991);《分析哲学的起源》(1993);《语言的海洋》(1993)等。2005年12月~2006年5月作者在英国牛津大学访问期间对他…     

Chinese Children's Moral Evaluation of Lies and Truths-Roles of Context and Parental Individualism-Collectivism Tendencies

The present study examined Chinese children's moral evaluations of truths and lies about one's own pro-social acts. Children ages 7, 9, and 11 were read vignettes in which a protagonist performs a good deed and is asked about it by a teacher, either in front of the class or in private. In response, the protagonist either tells a modest lie, which is highly valued by the Chinese culture, or tells an immodest truth, which violates the Chinese cultural norms about modesty. Children were asked to identify whether the protagonist's statement was the truth or a lie, and to evaluate how 'good' or 'bad' the statement was. Chinese children rated modest lies more positively than immodest truths, with this effect becoming more pronounced with age. Rural Chinese children and those with at least one nonprofessional parent rated immodest truths less positively when they were told in public rather than in private. Furthermore, Chinese children of parents with high collectivism scores valued modest lies more than did children of parents with low collectivism scores. These findings suggest that both macro- and micro-cultural factors contribute significantly to children's moral understanding of truth and lie telling.