Examining the Relationship Between Mathematics Anxiety and Mathematics Performance: An Instructional Hierarchy Perspective

This study investigated the relationship between mathematics anxiety, fluency, and error rates in basic mathematical operations among college students. College students were assigned to one of two groups (high anxiety or low anxiety) based on results from the Fennema-Sherman Mathematics Anxiety Scale (FSMAS). Both groups were then presented with timed tests in basic mathematical operations (addition, subtraction, multiplication, division, and linear equations). Results suggested that the higher mathematics anxiety group had significantly lower fluency levels across all mathematical operations tests. However, there were no significant differences in error rates between the two groups across any of the probes suggesting that mathematics anxiety is more related to higher levels of learning than to the initial acquisition stage of learning. Discussion focuses on a) stages of learning and their potential relationship to mathematics anxiety, b) the relationship between mathematics anxiety and mathematics performance, and c) directions for future research.     

Bicriteria cost versus service analysis of a distribution network—a case study

In order to improve the distribution system for the Nordic countries the BASF AG considered 13 alternative scenarios to the existing system. These involved the construction of warehouses at various locations. For every scenario the transportation, storage, and handling cost incurred was to be as low as possible, where restrictions on the delivery time were given. The scenarios were evaluated according to (minimal) total cost and weighted average delivery time. The results led to a restriction to only three cases involving only one new warehouse each. For these, a more accurate model for the cost was developed and evaluated, yielding results similar to a simple linear model. Since there were no clear preferences between cost and delivery time, the final decision was chosen to represent a compromise between the two criteria. Copyright © 1999 John Wiley & Sons, Ltd.     

教学设计中的成绩表现和心流体验:基于认知负荷视角

教学设计是为优化教学效果而形成的教学实施方案。为提高学习表现,认知负荷理论认为在组织教学设计时需考虑内、外认知负荷两大因素,但少有研究关注学生在学习过程中的体验。本研究通过单词复合性操纵内在负荷,通过呈现方式操纵外在负荷,探究两类负荷对心流体验及表现的影响。结果发现,内在负荷对心流及表现均有影响,外在负荷仅在低水平组表现出对心流及表现的影响,另外内外负荷在低水平组的表现上存在交互作用。结果表明,教学设计中的内在负荷是影响心流及表现的稳定因素,外在负荷不仅受知识水平影响,其对表现的有效性还受内在负荷的调节。     

工作记忆训练在精神疾病中的应用

随着工作记忆缺损与各类精神疾病的关联被逐渐阐明,研究者开始关注工作记忆训练能否作为干预手段应用在精神疾病领域中。当前,在对ADHD、精神分裂症、抑郁、焦虑、成瘾障碍和自闭症患者进行的工作记忆训练中发现了训练近迁移、远迁移以及临床症状缓解的相应证据,以及直接(通过提升工作记忆能力起效)和间接(通过提升其他关联能力起效)两条效益路径。此外,一个针对精神疾病患者的有效训练范式应当就三个层面进行考察:训练的一般成分(即受训的核心加工过程),训练的疾病特异成分(例如情绪工作记忆训练);以及训练的辅助性成分(例如动机、策略、慢波睡眠等)。未来研究需要关注适用不同精神疾病的训练范式与程序,促进工作记忆训练的定制化,并且通过完善评估手段进一步澄清工作记忆训练在病患中的效益机制。     

The California Linkages Program: Doorway to Housing Support for Child Welfare‐Involved Parents

Housing instability can complicate parents’ efforts to provide for their children. Child welfare service agencies have had difficulty adequately serving parents’ housing needs due to limited and constrained funding streams. This article integrates the voices of four important stakeholders to illuminate how an innovative model of service system coordination called Linkages addresses housing needs for child welfare‐involved parents eligible for public assistance. Facilitated by Linkages, these parents can receive supportive housing services through programs affiliated with the California public assistance program CalWORKs. Personal narratives reflecting the diverse perspectives of stakeholders in the Linkages collaboration—the statewide program director, a child welfare services coordinator, a CalWORKs caseworker, and a parent program participant—shed light on how the collaboration assists parents in attaining case plan goals, and highlights some of the factors facilitating and hindering effective collaboration between the agencies involved. Stakeholders emphasized the value of flexible service approaches, the intensity of the efforts required, the role of advocacy, and the importance of a shared vision between agencies working together to provide housing supports.     

中药有效成分研究与中医现代化

中药有效成分的提取可以看作是炮制方法的延伸,有效成分的研究是中药现代化的关键,有助于探索中医理论的实质,可望为中医现代化打开缺口.     

An exploratory analysis of task-interspersal procedures while teaching object labels to children with autism

Research has demonstrated that interspersing mastered tasks with new tasks facilitates learning under certain conditions; however, little is known about factors that influence the effectiveness of this treatment strategy. The initial purpose of the current investigation was to evaluate the effects of similar versus dissimilar interspersed tasks while teaching object labels to children diagnosed with autism or developmental delays. We then conducted a series of exploratory analyses involving the type of reinforcer delivered for correct responses on trials with unknown or known object labels. Performance was enhanced under the interspersal condition only when either brief praise was delivered for all correct responses or presumably more preferred reinforcers were provided for performance on known trials rather than on unknown trials.     

关于高校的实验与实践教学：基于教育心理学理论的思考

对于高校教育,运算学习方法多指实验、实践和学生科研活动,学生通过从事的实验、实践和科研活动来实现陈述性知识向程序性知识的转化,学习评价应着重考核学生对知识的理解和运用所学知识去解决问题的能力。本文阐述了突出实验／实践训练的高校教学设计的设想,并强调了应将各种教学实验类型有机地组合,给予学生先进、实用的实验技术的训练,以及在实验／实践教学中运用交互式的教学方法。     

不同浓度罗哌卡因的硬膜外镇痛效应对自然分娩的影响

观察不同浓度的罗哌卡因与固定浓度的芬太尼配伍行硬膜外自控分娩镇痛的临床效果。随机选择80例ASAI级～Ⅱ级、头位、单胎足月妊娠要求分娩镇痛的初产妇,按双盲原则分为四组。观察产妇的生命体征、疼痛程度、运动能力、感觉变化、宫缩情况、产程及分娩情况,以及产妇满意度等。不同浓度的镇痛药其镇痛效果无显著性差异。0．15％罗哌卡因与2μg／ml芬太尼混合液用于硬膜外分娩镇痛效果良好,药量适中,基本无运动及感觉阻滞,对产程及新生儿无明显影响,是较为适合用于分娩镇痛的浓度。     

策略型学习者认知心理结构及其运行机制

高效率学习是现代社会发展的需要,也是适应信息量急增的社会变革需要的必然选择。从教育心理学的视角研究策略型学习者,对其高效率学习心理,特别是高效率学习认知心理结构及其运行机制进行研究,有助于教育理论与实践工作者准确把握这类特殊教育对象的心理特点与规律,为开展策略型学习者教育提供了心理学依据。