The Choice of Response Probability in Bookmark Standard Setting: An Experimental Study     

Peter Baldwin  Melissa J. Margolis  Brian E. Clauser  Janet Mee  Marcia Winward 《Educational Measurement》2020,39(1):37-44

Evidence of the internal consistency of standard-setting judgments is a critical part of the validity argument for tests used to make classification decisions. The bookmark standard-setting procedure is a popular approach to establishing performance standards, but there is relatively little research that reflects on the internal consistency of the resulting judgments. This article presents the results of an experiment in which content experts were randomly assigned to one of two response probability conditions: .67 and .80. If the standard-setting judgments collected with the bookmark procedure are internally consistent, both conditions should produce highly similar cut scores. The results showed substantially different cut scores for the two conditions; this calls into question whether content experts can produce the type of internally consistent judgments that are required using the bookmark procedure.  相似文献   

Examining the predictive validity of behavior screeners across measures and respondents     

Corey Jones  Emily Graybill  Brian Barger  Andrew T. Roach 《Psychology in the schools》2020,57(6):923-936

Through this study we compared different informants and different behavior screening tools that are available to screen for behavioral and emotional risk. We examined screening results from 100 students from a high school with a high achiever's magnet program in the Southeastern United States (school demographics: 71% female and 79% black, non-Hispanic). This school conducted behavior screening using both teacher-report via the Student Risk Screening Scale, Internalizing/Externalizing (SRSS-IE) and student report via the Strengths and Difficulties Questionnaire (SDQ). Nonparametric correlation tests were conducted between the SRSS-IE and SDQ externalizing and internalizing scores. Generalized linear regression models were created based on the data (demographics, internalizing, and externalizing scores on both screening tools) to model the two count outcomes (office discipline referrals [ODRs] and absences). Diagnostic accuracy metrics were generated from the scores on both the SRSS-IE and SDQ with the outcome measures (ODRs and absences). Externalizing scores on both screening tools had statistically significant low correlations. The ODR model contained two predictors: externalizing score on the SRSS-IE and internalizing score on the SDQ, while the absence model contained grade and the externalizing score on the SDQ. The highest accuracy and agreement values were seen between students with elevated risks on both screening measures and ODRs. The results confirmed that teacher and student reporting, as well as different screening tools, will result in some different students being identified. The choice of informant and screening tools should be dependent on the needs and resources of the school.  相似文献   

The effect of beetroot juice supplementation on repeat-sprint performance in hypoxia     

Georgina L. Kent  Brian Dawson  Lars R. McNaughton  Gregory R. Cox  Louise M. Burke  Peter Peeling 《Journal of sports sciences》2019,37(3):339-346

This investigation assessed the effect of dietary nitrate (NO₃^?) supplementation, in the form of beetroot juice (BR), on repeat-sprint performance in normoxia and normobaric hypoxia. 12 male team-sport athletes (age 22.3 ± 2.6 y, VO_2peak 53.1 ± 8.7 mL.kg^?1.min^?1) completed three exercise trials involving a 10 min submaximal warm-up and 4 sets of cycling repeat-sprint efforts (RSE; 9 × 4 s) at sea level (CON), or at 3000 m simulated altitude following acute supplementation (140 mL) with BR (HYP_BR; 13 mmol NO₃^?) or NO₃^–depleted BR placebo (HYP_PLA). Peak (PPO) and mean (MPO) power output, plus work decrement were recorded during the RSE task, while oxygen consumption (VO₂) was measured during the warm-up. There were no significant differences observed between HYP_BR and HYP_PLA for PPO or MPO; however, work decrement was reduced in the first RSE set in HYP_BR compared with HYP_PLA. There was a moderate effect for VO₂ to be lower following BR at the end of the 10 min warm-up (ES = 0.50 ± 0.51). Dietary NO₃^? may not improve repeat-sprint performance in hypoxia but may reduce VO₂ during submaximal exercise. Therefore, BR supplementation may be more effective for performance improvement during predominantly aerobic exercise.  相似文献   

The Ultimate Survey: Asking One Question at a Time to Get Feedback from Library Users     

Leticia Camacho  Brian Wages  Taylor Harris 《The Reference Librarian》2020,61(1):1-14

ABSTRACT

Libraries use surveys and other instruments to gather feedback from their users. However, with competition from many other campus entities requesting input, how can survey fatigue be avoided? To gather this feedback, the Social Sciences Reference Desk utilized a short, fun and easy method. Each week for 10 weeks during the fall semester of 2017, the reference assistants wrote a survey question on a whiteboard and provided sticky notes for patrons to write their answers. The survey provided valuable information about patrons’ needs and expectations. It also fostered changes that were easily implemented to improve the delivery of library services.  相似文献   

RESILIENCE,BULLYING, AND MENTAL HEALTH: FACTORS ASSOCIATED WITH IMPROVED OUTCOMES          下载免费PDF全文

Brian Moore  Stuart Woodcock 《Psychology in the schools》2017,54(7):689-702

Resilience is associated with bouncing back from adversity, and the term currently enjoys significant popular appeal. However, understanding of resilience is often superficial. The current paper examined 105 primary and high school students’ experiences of resilience and bullying, and considered resilience as a hierarchical factorial model. The study found that higher levels of resilience subfactors were a protective factor regarding depression and anxiety; that individuals with poorer resilience were more likely to engage in bullying behaviors; that individuals with poorer levels of resilience were more likely to be victims of bullying; and, that gender did not appear to be a major variable regarding resilience and bullying. These findings suggest that resilience interventions that focus on improving specific resilience elements including optimism, trust, tolerance, sensitivity, and impairment may be more efficacious than interventions focused on other resilience elements.  相似文献   

Seeing the Forest and the Trees: Comparison of Two IRTree Models to Investigate the Impact of Full Versus Endpoint-Only Response Option Labeling     

Elisabeth M. Spratto  Brian C. Leventhal  Deborah L. Bandalos 《Educational and psychological measurement》2021,81(1):39

In this study, we examined the results and interpretations produced from two different IRTree models—one using paths consisting of only dichotomous decisions, and one using paths consisting of both dichotomous and polytomous decisions. We used data from two versions of an impulsivity measure. In the first version, all the response options had labels; in the second version, only the endpoints were labeled. Based on past research, we hypothesized that the endpoints would be selected more frequently in the endpoint-only labeled condition, and the midpoint response option would be selected more frequently in the fully labeled condition. Results from the two models (dichotomous and polytomous) were similar and indicated that our hypotheses were partially supported—specifically, there was no consistent pattern in terms of which condition saw a higher frequency of midpoint response selection. However, our hypotheses regarding extreme responding in the endpoint-only labeling condition were supported.  相似文献   

Values-Alignment Messaging Boosts Adolescents’ Motivation to Control Social Media Use     

Brian M. Galla  Sophia Choukas-Bradley  Hannah M. Fiore  Michael V. Esposito 《Child development》2021,92(5):1717-1734

Two preregistered experiments with 2,733 U.S. high school students (age range = 13–19 years) compared the impact of different messages on adolescents’ motivation to control social media use (SMU). A traditional message emphasized the benefits of avoiding SMU, whereas a values-alignment message framed controlling SMU as being consistent with autonomy and social justice. Compared to no message or a traditional message, in both studies, a values-alignment message led to greater motivation to control SMU immediately afterward, and in Study 2, awareness of “addictive” social media designs 3 months later. As hypothesized, values-alignment messaging was more motivating for girls than boys. Results offer preliminary support for leveraging adolescents’ drives for autonomy and social justice to motivate self-regulation of SMU.  相似文献   

Using Natural Language Processing to Predict Item Response Times and Improve Test Construction     

Peter Baldwin  Victoria Yaneva  Janet Mee  Brian E. Clauser  Le An Ha 《Journal of Educational Measurement》2021,58(1):4-30

In this article, it is shown how item text can be represented by (a) 113 features quantifying the text's linguistic characteristics, (b) 16 measures of the extent to which an information‐retrieval‐based automatic question‐answering system finds an item challenging, and (c) through dense word representations (word embeddings). Using a random forests algorithm, these data then are used to train a prediction model for item response times and predicted response times then are used to assemble test forms. Using empirical data from the United States Medical Licensing Examination, we show that timing demands are more consistent across these specially assembled forms than across forms comprising randomly‐selected items. Because an exam's timing conditions affect examinee performance, this result has implications for exam fairness whenever examinees are compared with each other or against a common standard.  相似文献   

美国世界一流大学经费支出研究及启示     

蓝文婷  王战军  Brian P. McCall 《复旦教育论坛》2021,19(1):105-112

本文运用固定效应模型,分析近十年美国公立世界一流大学的经费支出数据。研究发现:美国一流公立大学中教学科研经费是主要支出;经费总支出与一流大学的排名没有显著相关性,但部分经费支出对大学排名有显著影响。对于无医院服务支出的高校,公共服务支出与大学排名显著正相关;对于有医院服务支出的高校,辅助经营支出的增加有助于大学排名的提升,公共服务支出的影响却相反。因此,提高经费使用效率比增加总额更为重要。我国“双一流”建设高校应该革新经费支出配置理念,建立科学有效的经费配置体系,增大学校各类服务支出。  相似文献   

Understanding expert systems applications from a knowledge transfer perspective     

Weizhe?Feng  Yanqing?DuanEmail author  Zetian?Fu  Brian?Mathews 《知识管理研究与实践》2009,7(2):131-141

Expert systems (ESs) were introduced more than two decades ago, but their effectiveness and success are still in debate. This paper attempts to make a contribution to the better understanding of ES applications from a knowledge transfer perspective. This paper argues that an ES application is knowledge transfer that uses Information and Communication Technologies (ICT). Underpinned by knowledge transfer theories and through a series of empirical investigations of ES projects in agriculture, this study recognises the importance of human interactions in the ESs implementation process. Based on the evidence collected, a number of key players are examined. They are knowledge provider/sender, knowledge engineer, knowledge extensionist and knowledge recipient. This paper represents a first attempt to acknowledge the role of a knowledge extensionist in the ICT-based knowledge transfer process. The name ‘extensionist’ is borrowed from earlier literature and describes an actor whose role is an intermediary in supporting transferring knowledge towards the knowledge user. Findings demonstrate the significant contributions made by extensionists towards the success of ESs applications. It is argued that the rigidity and limitations of ESs in ICT-based knowledge transfer can be significantly reduced with the involvement of close human interactions with the knowledge recipient.  相似文献