耳机传送双重听觉信号的知觉特点研究

本研究探讨了耳机以叠加法和分离法传送双重听觉信号的知觉特点.实验结果表明(1)响度感觉是听觉中枢对同一信号的双耳输入强度加工整合的结果;(2)信号间的中枢干扰作用比外周干扰作用要小.前一论点在对三维虚拟听觉显示研究中也是应十分注意的.     

3～5岁幼儿表情认知的发展研究

研究通过"命名复制"、"选择建构"和"自由绘画"三种任务,考察了"嘴""眼""眉"等情绪标签在幼儿情绪识别中的优势效应。结果表明:(1)幼儿识别高兴、悲伤和愤怒要早于惊讶,识别高兴的成绩最好,3～4岁是识别悲伤和惊讶的快速发展期;(2)幼儿识别情绪过程中并未出现典型的"嘴部优势"效应,不同情绪具有不同的代表性的情绪标签,识别高兴和惊讶时嘴部是优势区域,而识别悲伤和愤怒时眼睛和眉毛是优势区域;(3)不同顺序的任务差异显著,先前的情绪命名和复制、建构等任务会显著提高儿童的自由绘画成绩。     

熟悉性能够支持联结记忆:一体化编码的作用

双加工理论认为熟悉性和回想是支持情景记忆的两种基本加工过程。一般认为熟悉性和回想都可以支持项目记忆,但只有回想能够支持联结记忆。然而,一体化假说提出,当刺激材料在学习阶段得到一体化编码,形成一个单一、整合的表征时,熟悉性也能够支持联结记忆。以往研究主要利用实验材料的固有特征,或使用定义法、交互表象法来实现对刺激材料的一体化编码,然后通过配对联结再认范式或来源记忆范式验证一体化假说。神经成像研究发现,位于内侧颞叶的嗅周皮层能够支持编码阶段一体化表征的形成和基于熟悉性对一体化表征的提取。未来研究应克服以往研究中存在的方法学缺陷、从功能神经网络的角度考察一体化加工的脑神经机制、并注重一体化编码策略在特殊人群中的应用价值。     

Review Essay: The History of Israel Contested and Revised

Books reviewed in this article: Philip R. Davies, In Search of ‘Ancient Israel’ Philip R. Davies, Scribes and Scrolls: The Canonization of the Hebrew Scriptures Lester L. Grabbe (ed.), Can a ‘History of Israel’ Be Written? Niels Peter Lemche, The Israelites in History and Tradition V. Philips Long (ed.), Israel's Past in Present Research: Essays on Ancient Israelite Historiography Thomas L. Thompson, The Mythic Past: Biblical Archaeology and the Myth of Israel     

《周易》"屯"卦音义辨正——敬答成中英教授

2008年拙文"Interpretations of YANG(阳)in the Yijing"刊登于美国学术期刊Journal of Chinese Philosophy时,成中荚教授(该刊主编)坚持将拙文"屯"卦的注音由我原来书写的"zhun",更改为"tun",并在拙文中加注宣称"屯"的本义应为"屯聚".指本人提出读音"zhun"与意义"困难"是错误的.本文根据<经典释文>所载录"屯"的两种音义纪录,说明"屯"的上古声类虽只有舌头音"t",但中古以降则已派生出舌上音"zh"(后世读为齿音)以专门表达"困难"的意义.再从"屯"卦六爻的含义、<彖传>的辞例、汉宋明清历代的<易>注考察,在在证明"困难"才是"屯"的本义..屯"卦读音为"zhun",意义为"困难",是毫无争议余地的事实;将"屯"卦读为"tun",释为"屯聚"是错误的.     

Empowerment praxis in community coalitions

Community coalitions address a wide variety of community problems, espousing a community development processes that promotes individual and collective self-determination. They offer a promising venue for the study of empowerment of individuals and organizations. This study utilizes data from members of 35 community coalitions organized for the prevention of alcohol and other drug problems to address the following questions: What individual characteristics are related to the psychological empowerment of coalition members? What organizational characteristics are related to the collective empowering of members? What organization characteristics are related to a coalition being organizationally empowered to succeed in achieving its objectives? At the individual level, psychological empowerment was most strongly related to individuals' participation levels, sense of community, and perceptions of a positive organizational climate. At the group level, the strongest predictors of collective empowering (our operationalization of the empowering organization) were net benefits of participation, commitment, and positive organization climate. Psychological empowerment and positive organizational climate were the two predictors of organizational effectiveness (the empowered organization). Implications and limitations of these findings are discussed.     

Blocking of the response-reinforcer association: Additional evidence

Response rates maintained by free-operant schedules are sometimes reduced when a brief signal is interposed between the response and reinforcer. Early interpretations of this rate reduction were in terms of associative competition between the response and signal, analogous to blocking and overshadowing effects obtained in Pavlovian conditioning. But subsequent evidence has disputed this interpretation by showing that the signal enhances response rate in several circumstances. The present study attempted to define the conditions determining the different effects by investigating the role of signal location in the delay-of-reinforcement interval. When it occurred immediately after a response, response rate was enhanced. When it occurred at the end of the delay interval, immediately preceding the reinforcer, the signal decreased response rate. A similar decremental effect occurred when the signal occurred in the middle of the delay interval, contiguous with neither the response nor the reinforcer. Similar blocking effects occurred with a response acquisition procedure. The results demonstrate that blocking effects do indeed occur in instrumental conditioning but that the usual procedure of using signals immediately contingent on responding confounds such blocking effects with the competing effects of conditioned reinforcement/marking.