Spatial memory in rats: Resistance to retroactive interference

Treatments that interfere with animals’ short-term retention (e.g., in delayed matching-to-sample) were studied using a spatial memory task. Rats performed in an eight-arm radial maze in which choosing each arm without repetition was the optimal behavior. Performances were interrupted between fourth and fifth choices for a delay of 15 sec to 2 min. A variety of events occurring during the delay interval did not disrupt memories for prior choices (as assessed by the accuracy of postdelay choices). The ineffective treatments included variations in visual and auditory environments, removal from the maze, food consumed during the delay, a distinctive odor added to the maze, or combinations of these manipulations. Additionally, performance on another spatial task (a four-arm maze) during the delay between Choices 4 and 5 did not interfere with performance in the eight-arm maze. These findings suggest that rats’ memories for spatial locations are immune to retroactive interference, at least within the range of conditions reported, and that the rat can successfully segregate memories for spatial locations established in different contexts.     

Peer assessment in university teaching: evaluating seven course designs

Peer assessment is understood to be an arrangement with students assessing the quality of their fellow students’ writings and giving feedback to each other. This multiple‐case study of seven designs of peer assessment focuses on the contribution of peer assessment to the acquisition of undergraduates’ writing skills. Its aim is to arrive at an optimal design of peer assessment. Factors included in this study are: the quality of peer assessment activities, the interaction between students in oral peer feedback, students’ learning outcomes, and their evaluation of peer assessment. Most students took assessing the work of their fellow students seriously, and included the peer feedback in the revision of their work. In most conversations, students provided feedback in an evaluative manner. In others, the interaction was more exploratory. For peer assessment, we recommend a combination of written and oral peer feedback.     

增强哲学课教学针对性和实效性的尝试

哲学课教学要增强针对性和实效性,在教学内容上力求做到科学性与思想性相统一;在课堂讲授上要强化原理的方法论功能和理论联系实际的引导;在教学实践环节上要突出学生分析和解决实际问题的能力及创新意识的培养;在育人上,从学生实际出发,有针对性地开展思想教育.     

基于项目的多课程协同教学理念和实践

大学教育质量的提高有赖于教学方法的改进。本文在引入协同教学理念的基础上,阐述了基于项目的多课程协同教学的含义,提出了基于项目的多课程协同教学的具体实施方法。研究表明,采用基于项目的多课程协同教学,对于提高大学生的学习兴趣以及解决问题的能力有良好的效果。     

不同健身运动处方对大学生健康体适能的影响

按《国家学生体质健康标准》测试的成绩,筛选出448名大学生自愿者为实验对象,有针对性地设计不同的健身运动处方,探讨实施不同健身运动处方对大学生健康体适能的影响,为大学生科学锻炼提供实验依据.结果表明:减肥健身运动处方,对大学生体重指数、肺活量体重指数产生积极影响,实验组实验前后差异明显,与对照组组间差异显著(P<0.05),强心运动处方干预对肺活量体重指数、台阶试验成绩有显著影响(P<0.01),壮力运动处方对男生握力体重成绩,女生一分钟仰卧起坐成绩影响显著(P<0.05)(P<0.01),增柔健身运动处方干预对坐位体前屈成绩产生积极影响(p<0.01).问卷调查显示:实施健身运动处方对大学生体育心理产生良好影响,实验组平均得分明显高于对照组(p<0.01).结论:实施健身运动处方能有效提高大学生健康体适能水平.     

Narrowmobilization and Tea Party Activism: A Study of Right-Leaning Alternative Media

Past research concerning the theoretical framework of Resistance Performance (RP) has been based on observations of liberal organizations and activists. In the following essay, we engage in a qualitative content analysis of alternative media utilized by conservative “Tea Party” activists to build on the concept of RP. Overall, we discovered that the dominant theme found in much of the content focuses on “purity,” which is considerably different from past RP research that found broad themes of “human rights,” “democracy,” “be the media,” and “principles of unity” embedded within liberal alternative media content. We conclude that the theme of “purity” gives rise to narrowmobilization, which constructs very focused protest communities within right-leaning politics.