A simple but powerful test of perseverative search in dogs and toddlers

Perseverative (A-not-B) errors during the search of a hidden object were recently described in both dogs and 10-month-old infants. It was found that ostensive cues indicating a communicative intent of the person who hides the object played a major role in eliciting perseverative errors in both species. However, the employed experimental set-up gave rise to several alternative explanations regarding the source of these errors. Here we present a simplified protocol that eliminates the ambiguities present in the original design. Using five consecutive object hiding events to one of two locations in a fixed order (“AABBA”), we tested adult companion dogs and human children (24 months old). The experimenter performed the hiding actions while giving ostensive cues in each trial and moved the target object to the given location in a straight line. Our results show that in the B trials, both 24-month-old children and dogs could not reliably find the hidden object, and their performance in the first B trials was significantly below that of any of the A trials. These results are the first to show that the tendency for perseverative errors in an ostensive-communicative context is a robust phenomenon among 2-year-old children and dogs, and not the by-product of a topographically elaborate hiding event.     

Review of The Supervisor's Guidebook: Evidence-Based Strategies for Promoting Work Quality and Enjoyment Among Human Service Staff (2nd edition) by Dennis Reid,Marsha Parsons,and Carolyn Green

This article summarizes a review of the book The Supervisor's Guidebook: Evidence-Based Strategies for Promoting Work Quality and Enjoyment Among Human Service Staff (2nd edition) by Reid, Parsons, and Green. We describe the book's organization and content. In addition, strengths and areas for improvement are noted. The book provides rich, relevant content to guide supervisory practices within a participative, evidence-based approach that could be applied in various human service settings.     

All Against All: How Beliefs about Human Nature Shape Foreign Policy Opinions

Although the American public's increasingly cynical views about human nature have drawn considerable attention from scholars, existing research says little about how interpersonal trust shapes mass foreign policy opinions. This study analyzes survey data to test the claim that citizens use their beliefs about human nature to reason about international affairs. The results indicate that cynical citizens are more likely than trusting citizens to endorse the principle of isolationism and to oppose cooperative forms of intervention in other nations' problems. Citizens' use of interpersonal trust as an information shortcut helps them to make inferences regarding a topic about which they typically know little, but such inferences are not necessarily realistic ones.     

A Latent Variable Framework for Power Estimation Within Intervention Contexts

This paper presents a latent growth SEM approach for the estimation of treatment effects, and power to detect such effects, within a true experimental design setting in which subjects are randomly assigned to treatment and control conditions. Power estimation is a critical component of intervention experiment design and the testing of their results. Although researchers have become increasingly sophisticated in applying tests for statistical significance in intervention contexts, few are aware of the power of these tests. The issues raised in this paper are not new; however, reminding researchers to consider these points is important. Exactly how the researcher handles these issues will depend on the questions asked and the resources available, as well as other considerations. Discussion underscores the relationship between the reliability of a study's measures and concomitant increases in power obtained within the SEM framework.     

2002年:中国医疗纠纷处理的重大转折

2002年4月1日开始实施的《最高人民法院关于民事诉讼证据的若干规定》,要求医院对医疗行为与损害的因果关系和不存在医疗过错承担举证责任,一时间,医院对此忿忿不平,百姓对此拍手叫好,4月15日,期待已久的《国务院医疗事故处理条例》缍正式颁布,与1987年颁布的《医疗事故处理办法》相比有了重大改变,中国医疗纠纷的处理在2002年发生了重大转折,对此进行了详细分析,与大多数人的观点不同,认为前者恰恰对医院有利,而后者对医院更为严格。     

临床医学与人文素质

遗传研究已经测定出人类基因序列,人的克降技术如此完备,克隆人呼之欲出。但是,人类并没有因为高科技而摆脱身心的负担,反而更为焦虑。人类受自身生物结构的限制,对世界的了解借科学的发展而发展,因而对世界的认识既受限制,又无止境,临床医学更加需要人文主义精神,要求医生把病人更多地看作是社会的人,有着非常复杂的心理需要,而不仅仅是生物学意义上的人。临床医生的人文素质培养和要求是当务之急。     

"旧人"的否弃和"新人"的形塑--论马克思对人的价值形象的设计

任何关于人的理论都有自己理想的人的价值形象。它既是观察和评价现实生活的标准,也是实践活动所追求的目标。本文旨在将马克思所设计的人的价值形象从他复杂的理论构造中剥离出来。马克思关于人的理论以批判性的建构为鲜明特色,他对理想的人的价值形象的设计跟他对人的实际生活状况的否定是相辅相成的,亦即对“旧人”的否弃和对“新人”的塑形是同时进行的。这个“新人”的主要内涵如下：人应该是民主制度下的人。应该是追求现实幸福的人,应该是自由地自觉地活动的人,应该是全面发展的人。     

International Human Rights and National Discretion

This paper argues that the EuropeanCourt of Human Rights couldserve as a model for an international court ofhuman rights to be builtupon the United Nations Committee on HumanRights. It argues that theconcerns states might have over the surrenderof a significant portion oftheir national sovereignity might be lessenedif such an internationalcourt were to incorporate the margin ofappreciation doctrine employed bythe European Court of Human Rights. Thisdoctrine is intended to respectthe customs and traditions of sovereign statesin dealing with humanrights issues, while maintaining that somerights such as the right not tobe tortured will be considered as basic andwill stand independently ofthe customs and traditions of sovereignstates.     

关于克隆人试验与伦理学的三原则

由于克隆人试验的对象是人的活细胞,不是人的胚胎;并且由于人只能有限地决定自己的未来,根本无法决定自己的出生;同时由于基因诊断和修复有助于新生儿的健康,因而克隆人试验既不会伤害任何人的生命体,也不会侵犯任何可能出现的克隆人的自主权和平等权,进而不会违反伦理学的三原则。