Validity and Reliability of the Global Physical Activity Questionnaire (GPAQ)

There is limited published validity and reliability evidence to support using the Global Physical Activity Questionnaire. Two studies were conducted to evaluate validity and reliability evidence for the Global Physical Activity Questionnaire. In Study 1: 69 adults completed the Global Physical Activity Questionnaire (three months apart; n?=?54), International Physical Activity Questionnaire, fitness and anthropometric measures. All participants wore a pedometer and 53 participants wore an accelerometer for seven days at baseline. In Study 2, 16 adults completed the Global Physical Activity Questionnaire 10 days apart. Global Physical Activity Questionnaire moderate and vigorous minutes were correlated with the accelerometer moderate (r?=?0.28) and vigorous (r?=?0.48) physical activity. The Global Physical Activity Questionnaire and International Physical Activity Questionnaire were related for sedentary behaviors (r?=?0.51), moderate-to-vigorous (r?=?0.48) and vigorous (r?=?0.63) PA. Global Physical Activity Questionnaire moderate-to-vigorous physical activity was associated with percent fat (r =??0.32), estimated VO₂ max (r?=?0.26), and step count (r?=?0.39). The Global Physical Activity Questionnaire demonstrated graded differences across categories for step count, body mass index, waist circumference, percent fat, fitness, and accelerometer measured activity. Short-term test–retest reliability (10 days) ranged from 0.83 to 0.96 while long-term reliability (three months) was 0.53 to 0.83. These data provide low-to-moderate validity and generally acceptable reliability evidence for the Global Physical Activity Questionnaire.     

Transactional literature circles and the reading comprehension of English learners in the mainstream classroom

This study examines a problem that many mainstream teachers face today: how to successfully improve reading comprehension for English language learners (ELLs) in an English‐only environment. The researcher examines both the academic and psychosocial effects of the Transactional Literature Circles (TLC) programme on a treatment group of 75 fourth to sixth grade, at‐risk, ELLs to a comparable control group who did not participate in the study. The results of this study report that TLC positively affected the reading comprehension of the programme participants. The students in the TLC programme outperformed the students in the control group on standardised reading tests, and in 7 months increased one grade level in reading. Teacher interviews and student surveys reported an increase in student reading engagement and motivation that positively affected reading self‐efficacy, confidence and a willingness to participate in class discussions.     

Chat reference service in medical libraries: part 2--Trends in medical school libraries

An increasing number of medical school libraries offer chat service to provide immediate, high quality information at the time and point of need to students, faculty, staff, and health care professionals. Part 2 of Chat Reference Service in Medical Libraries presents a snapshot of the current trends in chat reference service in medical school libraries. In late 2002, 25 (21%) medical school libraries provided chat reference. Trends in chat reference services in medical school libraries were compiled from an exploration of medical school library Web sites and informal correspondence from medical school library personnel. Many medical libraries are actively investigating and planning new chat reference services, while others have decided not to pursue chat reference at this time. Anecdotal comments from medical school library staff provide insights into chat reference service.     

Information-seeking behavior of nursing students and clinical nurses: implications for health sciences librarians.

OBJECTIVES: This research was conducted to provide new insights on clinical nurses' and nursing students' current use of health resources and libraries and deterrents to their retrieval of electronic clinical information, exploring implications from these findings for health sciences librarians. METHODS: Questionnaires, interviews, and observations were used to collect data from twenty-five nursing students and twenty-five clinical nurses. RESULTS: Nursing students and clinical nurses were most likely to rely on colleagues and books for medical information, while other resources they frequently cited included personal digital assistants, electronic journals and books, and drug representatives. Significantly more nursing students than clinical nurses used online databases, including CINAHL and PubMed, to locate health information, and nursing students were more likely than clinical nurses to report performing a database search at least one to five times a week. CONCLUSIONS AND RECOMMENDATIONS: Nursing students made more use of all available resources and were better trained than clinical nurses, but both groups lacked database-searching skills. Participants were eager for more patient care information, more database training, and better computer skills; therefore, health sciences librarians have the opportunity to meet the nurses' information needs and improve nurses' clinical information-seeking behavior.     

Comparison of Methods for Analyzing Global Positioning System and Accelerometer Data during School Recess

Several geospatial approaches have been used to characterize physical activity during recess using global positioning system (GPS) data. GPS and accelerometer data from 23 children collected during recess were analyzed using four previously used approaches: (1) dot map, (2) fishnet grid, (3) hot spot analysis, which determines clusters of high/low intensity values, and (4) zonal approach wherein the schoolyard was divided into zones to determine the time and intensity in each zone. Results from each method were compared to each other and to video observation. Hot spot analysis revealed clusters of high-intensity values, which were supported by dot and grid maps and video. However, the zonal approach revealedpatterns in where children play that were not always comparable tovideo, potentially due to missing GPS data. Recommendations for the use of these methods in future research are discussed.     

Digital chat reference in health science libraries: challenges in initiating a new service

Digital reference service adds a valuable new dimension to health science reference services, but the road to implementation can present questions that require carefully considered decisions. This article incorporates suggestions from the published literature, provides tips from interviews with practicing academic health science librarians, and reports on data from students' exploration of academic health science library Web sites' digital reference services. The goal of this study is to provide guidelines to plan new services, assess user needs, and select software, and to showcase potential benefits of collaboration and proactive and user-friendly marketing. In addition, tips for successful operation and evaluation of services are discussed.     

Using a whole‐class token economy and coaching of teacher skills in a preschool classroom to manage disruptive behavior

The Level System is a whole‐classroom approach for managing disruptive behavior that utilizes behavioral management strategies such as a token economy, response cost, stimulating rewards, and strategic attention. Using an ABACC′ treatment comparison design with follow‐up, this study evaluated the effectiveness of the Level System in a preschool classroom compared to (a) strategies already employed by the teacher, and (b) coaching the teacher in the Child‐Directed Interaction (CDI) and Parent‐Directed Interaction (PDI) phases of Parent–Child Interaction Therapy (PCIT). Teacher‐ and parent‐report measures were administered, and behavioral observation data were collected for child and teacher behavior using videotapes. Results suggested that the amount of inappropriate behavior exhibited by children decreased when the Level System was implemented. Additionally, inappropriate behavior decreased further during the CDI and PDI conditions. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 351–361, 2004.     

The Critical Role of Vocabulary Development for English Language Learners

English language learners (ELLs) who experience slow vocabulary development are less able to comprehend text at grade level than their English‐only peers. Such students are likely to perform poorly on assessments in these areas and are at risk of being diagnosed as learning disabled. In this article, we review the research on methods to develop the vocabulary knowledge of ELLs and present lessons learned from the research concerning effective instructional practices for ELLs. The review suggests that several strategies are especially valuable for ELLs, including taking advantage of students' first language if the language shares cognates with English; ensuring that ELLs know the meaning of basic words, and providing sufficient review and reinforcement. Finally, we discuss challenges in designing effective vocabulary instruction for ELLs. Important issues are determining which words to teach, taking into account the large deficits in second‐language vocabulary of ELLs, and working with the limited time that is typically available for direct instruction in vocabulary.