Effects of Method of Subject Selection (Volunteer vs Random) and Treatment Variable on Motor Performance

Abstract

The purpose of this study was to test for possible interaction effects between method of subject selection (volunteer vs random) and a selected treatment variable—verbal encouragement. The presence of such an interaction would suggest that generalizations regarding verbal encouragement could be made only to specific subject populations. Volunteer (n = 40) and randomly selected (n = 40) subjects were randomly assigned to either a verbal encouragement condition or to a control group with no verbal encouragement. Dependent variables were a tapping task and a leg lift task. It was predicted that volunteer subjects, due to their higher need for approval and greater desire to accommodate, would perform significantly better under the verbal encouragement condition than would the randomly selected subjects. Multivariate and univariate data analyses indicated that the prediction was supported on the tapping task (female subjects only) but not on the leg lift task. It was concluded, at least on certain tasks, that use of volunteer subjects may result in a selection bias × treatment interaction effect that could limit the generalizability of research results.     

课堂教学情境下学科高阶思维的结构与发展规律——以语文学科为例

高阶思维发展“沉浸”在不同学科课堂教学情境中,呈现出具有学科思维特点和学科活动特征的内在结构与发展规律。文章以语文学科为例,基于思维结构、高阶思维结构等基本理论,结合对学科思维的深入剖析,建立了认知要素与情感要素协同作用、思维过程与思维品质动态发展的学科高阶思维结构模型;进而以模型为理论框架对学科课堂教学视频进行质性分析,挖掘课堂情境中高阶思维活动发生与发展的表现与特征,构建了以复杂问题解决过程为主线、体现思维活动阶段性特征、高阶思维内在要素协同发挥作用、高阶思维外在品质不同程度提升的学科高阶思维发展规律模型。以期为探析学科高阶思维结构与发展规律提供一种思路与方法,为高阶思维发展取向的学科课堂教学设计与实施提供理论依据。     

J函数的边际修正估计及比较

J函数是1-G(t)和1-F(t)的比值.文章把关于G(t)和F(t)的估计扩展到J(t)并对其进行了比较研究,包括偏差、样本方差和最大偏离的比较.     

Threats to student evaluative judgement and their management

ABSTRACT

Students’ capacity for making evaluative judgements of their own work is widely acknowledged as central to their learning within programmes as well as being vital to their subsequent professional practice. In higher education literature, the act of evaluative judgement is usually portrayed as a process of deliberative, analytical reasoning requiring student agency and objectivity, typically scaffolded by points of reference such as explicit criteria, rubrics or exemplars. This article challenges this common portrayal of judgement by drawing attention to research from outside higher education on the role of unconscious factors in judgement and decision-making. Drawing from the field of heuristics and bias studies, the article outlines six unconscious factors that have the potential to distort students’ analytical judgement of their work. A recent challenge to the heuristics and bias approach that radically repositions the place of reasoning in judgement is also considered. Since these unconscious factors have received scant attention in higher education literature, the purpose of this article is to draw attention to them, to identify the challenges they pose to current understandings of evaluative judgement, and to outline their implications for enhancing assessment practice.     

对四川省地方高校学科建设现存问题的思考

地方高校的学科建设工作不容忽视.本文在分析和指出了四川省地方高校学科建设现存问题的基础上,提出了解决问题的对策和建议.即紧密结合地方经济建设与社会发展的需要建设优势学科、特色学科;科学定位,确立分层次、分阶段建设的原则;在地方高校切实加强自身学科建设的同时,地方政府应对地方高校担负起经费支持以及政策扶持的责任.     

“Pick and choose” opinion climate: How browsing of political messages shapes public opinion perceptions and attitudes

ABSTRACT

High-choice media environments allow people to cocoon themselves with like-minded messages (confirmation bias), which could shape both individual attitudes and perceived prevalence of opinions. This study builds on motivated cognition and spiral of silence theory to disentangle how browsing political messages (both selective exposure as viewing full articles and incidental exposure as encountering leads only) shapes perceived public opinion and subsequently attitudes. Participants (N?=?115) browsed online articles on controversial topics; related attitudes and public opinion perceptions were captured before and after. Multi-level modeling demonstrated a confirmation bias. Both selective and incidental exposure affected attitudes per message stance, with stronger impacts for selective exposure. Opinion climate perceptions mediated selective exposure impacts on attitudes.     

高校图书馆中情报学学科发展的战略分析

高校图书馆作为情报学研究生教育的一支力量正在逐渐壮大,如何克服内在不足,抓住机会,发挥优势成为图书馆中情报学学科发展的关键。论文利用SWOT分析法和层次分析法对高校图书馆中情报学学科发展的优势、劣势、机会、威胁因素进行定量分析,结果表明其发展面临的战略选择是争取型战略。最后提出相应的发展战略对策。     

专题库立项与学科服务之关系研究

本文通过CALIS专题库立项情况分析,提出了以优势学科或专业为依托立项,不仅有利于立项而且可以充分满足学校重点学科与特色学科建设的需要,可以实现图书馆服务向通用化和专业化双向升级,深化学科服务。     

“Aliens” vs. Catalogers: Bias in the Library of Congress Subject Heading

Abstract

Aliens: It is the subject of conspiracy theories and nightmares, the name of a blockbuster science fiction/horror movie franchise, and also how the de facto national library of the United States refers to “persons who are not citizens of the country in which they reside.” In 2016, the Library of Congress announced that it would reconsider the usage of “Aliens” and its related terms in the Library of Congress Subject Headings, following a student-led movement to change the pejorative term “Illegal Aliens.” Yet, three years on, these terms remain in the LCSH. Using the “Illegal Aliens” controversy as a case study, this article explores how the LCSH works, its role in research, and its vulnerabilities to bias, and offers proposals for how librarians can help improve the situation.     

Stigma activation through dis-identification: cognitive bias triggered by mass media photos of people with obesity

ABSTRACT

This study investigated how the prevalent visual depiction of obesity in the media promotes stigmatization of obese individuals. Particularly, this study proposed and tested the two sequential mechanisms which were not explicated in the previous models but indispensable in stigma research: (1) the disease avoidance response (i.e. discomfort for physical contact) and (2) dehumanizing perception. Results of two experiments overall supported the extended model: the headless photos of obese individuals triggered the disease avoidance responses, which sequentially increased the dehumanizing perception of and negative attitudes toward obese individuals. The identity trait (e.g. gender) match increased readers' level of social identification with obese people and alleviated the disease avoidance response when they saw the photo of the obese model as a whole being. By contrast, the opposite effects (i.e. disidentification and heightened discomfort) were found when the participants saw the headless photo of the obese model of the same gender.