A mediational model linking perceptions of security,alexithymia and behavior problems of sexually abused children

BackgroundPerceptions of security toward parents are related with internalized and externalized problems among victims of child sexual abuse (CSA). Alexithymia, which is difficulty in identifying and expressing feelings, is associated with the quality of parent-child relationships (Oskis et al., 2013) and behavior problems in children (Di Trani et al., 2013).ObjectiveThe current study tested the mediational role of alexithymia in the relationship between perceptions of security toward parents and behavior problems among CSA victims.Participants and methodUsing a short-term multi-informant prospective design, 263 victims of CSA aged 6–12 years completed the Kerns Security Scale (Kerns, Klepac, & Cole, 1996), which evaluates perceived attachment security to mothers and fathers. Parents completed the Child Behavior Checklist (Achenbach & Rescorla, 2001) at Time 1 to provide baseline scores of behavior problems and again four months later. At Time 2, parents also assessed the children’s alexithymia using the Children’s Alexithymia Measure (Way et al., 2010).ResultsPerceptions of security were both associated with alexithymia, as well as with internalizing and externalizing problems (p < .05). A mediational model showed that perception of security toward fathers outweighed the mother-child relationship in predicting children’s alexithymia. Path analysis revealed that the father-child relationship predicted decreased behavioral problems at Time 2 through a lower level of alexithymia. The model explained 46.9% of internalizing problems and 56.1% of externalizing problems (p < .05).ConclusionsThe findings support the relevance of alexithymia as an intervention target for CSA victims and underscore the importance of the father-child relationship.     

Application of network meta-analysis in the field of physical activity and health promotion

Continued advancement in the field of physical activity and health promotion relies heavily on the synthesis of rigorous scientific evidence. As such, systematic reviews and meta-analyses of randomized controlled trials have led to a better understanding of which intervention strategies are superior (i.e., produce the greatest effects) in physical activity-based health behavior change interventions. Indeed, standard meta-analytic approaches have allowed researchers in the field to synthesize relevant experimental evidence using pairwise procedures that produce reliable estimates of the homogeneity, magnitude, and potential biases in the observed effects. However, pairwise meta-analytic procedures are only capable to discerning differences in effects between a select intervention strategy and a select comparison or control condition. In order to maximize the impact of physical activity interventions on health-related outcomes, it is necessary to establish evidence concerning the comparative efficacy of all relevant physical activity intervention strategies. The development of network meta-analysis (NMA)—most commonly used in medical-based clinical trials—has allowed for the quantification of indirect comparisons, even in the absence of direct, head-to-head trials. Thus, it stands to reason that NMA can be applied in physical activity and health promotion research to identify the best intervention strategies. Given that this analysis technique is novel and largely unexplored in the field of physical activity and health promotion, care must be taken in its application to ensure reliable estimates and discernment of the effect sizes among interventions. Therefore, the purpose of this review is to comment on the potential application and importance of NMA in the field of physical activity and health promotion, describe how to properly and effectively apply this technique, and suggest important considerations for its appropriate application in this field. In this paper, overviews of the foundations of NMA and commonly used approaches for conducting NMA are provided, followed by assumptions related to NMA, opportunities and challenges in NMA, and a step-by-step example of developing and conducting an NMA.     

网络环境中学习者反思行为的向度分布研究

反思可以看作为网络学习环境下学习行为的一种高阶能力,通过网络学习环境中的学习者反思行为的研究分析对提高网络学习的效果有重要的作用。采用试验研究,通过编码分析学习交互中的反思行为数据,探究学习反思行为的向度分布。结果发现,网络学习环境下学习者的反思分布主要是在认知领域的,在行为和情感领域的反思还比较欠缺;在班级和性别上反思的分布均存在某种差异。     

对男子400m起跑反应时及分段速度的纵向研究

本文运用文献资料法和数理统计方法,对参加第六届和第七届世锦赛400M决赛的四名运动员的起跑反应时和分段速度与400M成绩的关系进行对比分析。结果表明,对同一位选手来说,在获得较好成绩的比赛中,他的反应时、0-50M和50-150M的速度相对较高,而保持速度阶段的速度却有下降的趋势。     

College Students' Sexual Health: Investigating the Role of Peer Communication

This study used the Theory of Planned Behavior as a guide to investigate college students' discussions with their peers about sexual health-related topics. Two hundred thirty-one undergraduates from a large university completed a questionnaire that assessed their comfort level discussing sexual health-related issues, the topics discussed, and the sex of the discussion partners. Some of the topics most frequently discussed included birth control, condoms, sexually transmitted diseases, and resources. Although a majority of the participants felt comfortable talking with both males and females, participants felt more comfortable discussing with their own gender than the opposite gender, and were in general more comfortable talking with females than males. Results showed that most students felt comfortable discussing sexual health-related topics with their peers, with females reporting a slightly higher comfort level than males.     

Teacher behavior, student interest and affective learning: putting theory to practice

Students of Project Adapt (PA), an instructional program for at-risk middle school students in Brooklyn NY, have displayed startling improvement on cognitive outcome measures. Teacher given grades and standardized tests illuminate the progress students have made since entering the program. The current investigation attempts to analyze PA on students' affective responses in a pre/post-test experimental design. Upon entering PA, students completed measures of interest, affect, and their previous teachers' behavior (pre). These ratings were then compared to end of year ratings on the same instruments (post). Results indicate students' perceive PA teachers utilizing different behaviors than their previous teachers. Additionally, student affect and interest increased significantly. Results of this study have implications for both instructional researchers and educational practitioners.     

黑龙江省大学生运动员学习心理疲劳状况调查

为了探讨大学生运动员学习心理疲劳状况,本研究选取黑龙江省大学生运动员343人进行了学习心理疲劳的调查。结果表明,随着年级的增长,学习心理疲劳加重,尤其是大四毕业生对学习的兴趣以及对个人成就的体验均呈下降趋势。     

高校图书馆电子资源使用与用户检索行为统计分析-以ScienceDirect数据库为例

以爱思唯尔(Elsevier)公司的ScienceDirect数据库为例,根据数据库在线统计平台所提供的使用报告的主要指标数据,研究电子资源的利用情况,并结合购买经费对使用绩效进行评价。通过统计重点需求期刊的学科分类和影响因子的分布,了解各学科电子资源的实际需求,进一步分析我校重点需求期刊的学科满足度及利用层面。同时,基于用户的检索行为数据,了解用户在检索过程中的习惯偏好。由此,为图书馆馆藏资源建设提供有针对性的指导意见,同时为信息素养教育的有效开展提供建议。     

Fe3+、Al3+与芦丁在CTMAB-OP中的显色反应研究

用芦丁（Rutin）作配合剂,在CTMAB-OP混合表面活性剂中分别与Fe3+、Al3+反应,结果表明铝离子的显色反应与单一表面活性剂CTMAB反应相似,铁离子由不反应变为可反应。Fe3+-Rutin-CTMAB-OP体系的配合物组成的摩尔比为Fe3+:Rutin=1:2。     

一部务实求新的学术力作--《参考咨询新论》读后感

夏侯炳先生的新作《参考咨询新论》在对图书馆转型期参考咨询定位的基础上。全面、系统、深入地探讨了参考咨询工作，勾勒出这一分支学科完整的理论体系。同时具有很强的可操作性和实践指导价值。