The Effects of Maternal Alcohol Consumption and Cigarette Smoking during Pregnancy on Acoustic Cry Analysis   总被引：2，自引：0，他引：2  

J. Kevin Nugent  Barry M. Lester  Sheila M. Greene  Dorith Wieczorek-Deering  Paul O'Mahony 《Child development》1996,67(4):1806-1815

During the last trimester of pregnancy, 127 primiparous Irish mothers were interviewed to ascertain their history of alcohol and tobacco use. Confounding effects due to other drugs were not a factor in this sample. Mothers consumed an average of .21 ounces absolute alcohol (AA) per day, with 62% classified as moderate drinkers, 10.6% as heavy drinkers, and 26% as nondrinkers. Neurobehavioral status was measured using acoustic characteristics of the infant's cry, collected on the third day of life. Multiple regression analysis showed that more ounces AA per day was related to more dysphonation and higher first formant, while more cigarette smoking was related to higher pitch, higher second formant, and more variability in the second formant. Analysis of variance comparisons of these 3 alcohol groups demonstrated significant cry effects on infants of heavy drinking mothers.  相似文献   

A Study of Computer-Assisted Learning Environments in Singapore     

George P.L. Teh  Barry J. Fraser 《Asia Pacific Journal of Education》1994,14(2):26-41

The present study filled some gaps in past learning environment research in that, first, it involved the development of a new instrument tailor-made specifically for use in computer-assisted learning (CAL) classrooms and, second, it provided one of the rare examples of an evaluation of computer-assisted learning based on its impact on the nature of a classroom learning environment as perceived by students. In addition, the research was conducted in the unique milieu of the Singapore school system, and it investigated associations between students' outcomes and the classroom environment in computer-assisted learning settings.  相似文献   

Learning Environment and Attitudes Associated with an Innovative Science Course Designed for Prospective Elementary Teachers     

Catherine Martin-Dunlop  Barry J. Fraser 《International Journal of Science and Mathematics Education》2008,6(1):163-190

This study assessed the effectiveness of an innovative science course for improving prospective elementary teachers’ perceptions of laboratory learning environments and attitudes towards science. The sample consisted of 27 classes with 525 female students in a large urban university. Changing students’ ideas about science laboratory teaching and learning and creating more positive attitudes towards science were accomplished by using a guided open-ended approach to investigations, together with instructors who used cooperative learning groups to create a supportive environment. Ideas and attitudes prior to the course were assessed using a questionnaire focusing on the students’ previous science laboratory courses, and these were compared to data collected at the end of the course. Students reported large and statistically significant improvements on all seven scales assessing the laboratory learning environment and attitudes towards science. The largest gains were observed for Open-Endedness and Material Environment (with effect sizes of 6.74 and 3.82 standard deviations, respectively). An investigation of attitude-environment associations revealed numerous positive and statistically significant associations in both univariate and multivariate analyses. In particular, the level of Instructor Support was the strongest independent predictor of student attitudes at two levels of analysis.  相似文献   

‘Nature’ and the ‘environment’ in Jamaica’s primary school curriculum guides     

Therese Ferguson 《Environmental Education Research》2008,14(5):559-577

In cases where environmental education is institutionalised within schools, the curriculum can affect what and how students learn about ‘nature’ and the ‘environment’. In Jamaica, schools are considered important settings for environmental education; the curriculum therefore includes environmental issues. Using content analysis, representations of ‘nature’ and the ‘environment’ in the nation’s primary level Curriculum Guides were examined. Findings indicate that although many units emphasise an anthropocentric view of nature, this is tempered by depictions of nature’s fragility and, in some instances, nature’s ‘divine’ dimensions. Several curricular units also facilitate student’s creative engagement with nature, allowing for multiple views of the natural world.  相似文献   

Body composition assessment of English Premier League soccer players: a comparative DXA analysis of first team,U21 and U18 squads     

Jordan Milsom  Robert Naughton  Andy O’Boyle  Zafar Iqbal  Ryland Morgans  Barry Drust 《Journal of sports sciences》2015,33(17):1799-1806

Professional soccer players from the first team (1st team, n = 27), under twenty-one (U21, n = 21) and under eighteen (U18, n = 35) squads of an English Premier League soccer team were assessed for whole body and regional estimates of body composition using dual-energy X-ray absorptiometry (DXA). Per cent body fat was lower in 1st team (10.0 ± 1.6) compared with both U21 (11.6 ± 2.5, P = 0.02) and U18 (11.4 ± 2.6, P = 0.01) players. However, this difference was not due to variations (P = 0.23) in fat mass between squads (7.8 ± 1.6 v 8.8 ± 2.1 v 8.2 ± 2.4 kg, respectively) but rather the presence of more lean mass in 1st team (66.9 ± 7.1 kg, P < 0.01) and U21 (64.6 ± 6.5 kg, P = 0.02) compared with U18 (60.6 ± 6.3 kg) players. Accordingly, fat mass index was not different (P = 0.138) between squads, whereas lean mass index was greater (P < 0.01) in 1st team players (20.0 ± 1.1 kg · m^?2) compared with U18 players (18.8 ± 1.4 kg · m^?2). Differences in lean mass were also reflective of higher lean tissue mass in all regions, for example, upper limbs/lower limbs and trunk. Data suggest that training and nutritional interventions for younger players should therefore be targeted to lean mass growth as opposed to body fat loss.  相似文献   

Possible Solution to Publication Bias Through Bayesian Statistics,Including Proper Null Hypothesis Testing     

Elly A. Konijn  Rens van de Schoot  Sonja D. Winter  Christopher J. Ferguson 《Communication methods and measures》2015,9(4):280-302

The present paper argues that an important cause of publication bias resides in traditional frequentist statistics forcing binary decisions. An alternative approach through Bayesian statistics provides various degrees of support for any hypothesis allowing balanced decisions and proper null hypothesis testing, which may prevent publication bias. Testing a null hypothesis becomes increasingly relevant in mediated communication and virtual environments. To illustrate our arguments, we re-analyzed three data sets of previously published data --media violence effects, mediated communication, and visuospatial abilities across genders. Results are discussed in view of possible Bayesian interpretations, which are more open to a content-related argumentation of varying levels of support. Finally, we discuss potential pitfalls of a Bayesian approach such as BF-hacking (cf., “God would love a Bayes Factor of 3.01 nearly as much as a BF of 2.99”). Especially when BF values are small, replication studies and Bayesian updating are still necessary to draw conclusions.  相似文献   

Designing usable interventions: bringing student perspectives to the table     

Barry J. Fishman 《Instructional Science》2014,42(1):115-121

This commentary examines the rationale behind the use of participatory approaches to the design and development of educational interventions, particularly with respect to the inclusion of students in the process. The perspectives and claims put forth in this special issue are examined against an emerging approach to designing more usable educational interventions called design-based implementation research, or DBIR.  相似文献   

Promoting early career teacher resilience: a framework for understanding and acting     

Bruce Johnson  Barry Down  Rosie Le Cornu  Judy Peters  Anna Sullivan  Jane Pearce 《Teachers and Teaching》2014,20(5):530-546

In this paper, we undertake a brief review of the ‘conventional’ research into the problems of early career teachers to create a juxtaposed position from which to launch an alternative approach based on resilience theory. We outline four reasons why a new contextualised, social theory of resilience has the potential to open up the field of research into the professional lives of teachers and to produce new insights into the social, cultural and political dynamics at work within and beyond schools. We then move from these theoretical considerations to explain how we used them in a recent Australian research project that examined the experiences of 60 graduate teachers during their first year of teaching. This work led to the development of a Framework of Conditions Supporting Early Career Teacher Resilience which we outline, promote and advocate as the basis for action to better sustain our graduate teachers in their first few years of teaching. Finally, we reflect on the value of our work so far and outline our practical plans to ‘mobilise’ this knowledge in ways that will make it available to a variety of audiences concerned with the welfare of this group of teachers.  相似文献   

Development,validation and application of a modified Arabic translation of the What Is Happening In this Class? (WIHIC) questionnaire     

Cheri MacLeod  Barry J. Fraser 《Learning Environments Research》2010,13(2):105-125

This article reports the development, translation, validation and application of a modified Arabic version of a modified form of the What Is Happening In this Class? (WIHIC) questionnaire. When parallel Arabic and English versions of this questionnaire were field tested with a sample of 763 college students in 82 classes, the WIHIC exhibited sound factorial validity and internal consistency reliability for both its actual and preferred forms, and the actual form differentiated between the perceptions of students in different classrooms. Comparison of students’ scores on actual and preferred forms of the questionnaires revealed that students preferred a more positive classroom environment on all scales.  相似文献   

Enhancing students’ self-regulation and mathematics performance: the influence of feedback and self-evaluative standards     

Andju Sara Labuhn  Barry J. Zimmerman  Marcus Hasselhorn 《Metacognition and Learning》2010,5(2):173-194

The purpose of this study was to examine the effects of self-evaluative standards and graphed feedback on calibration accuracy and performance in mathematics. Specifically, we explored the influence of mastery learning standards as opposed to social comparison standards as well as of individual feedback as opposed to social comparison feedback. 90 fifth grade students were randomly assigned to experimental and control groups. We conducted analyses for both the complete sample and an at-risk group of low performing students who overestimate their skills. Self-evaluative standards had no effect on calibration accuracy and performance. Students who received feedback were more accurate in their self-evaluative judgements than students who received neither type of feedback. In overconfident students, feedback additionally increased prediction accuracy and, albeit marginally, performance. We discuss the educational implications of our findings with respect to the relevance of standards and feedback for promoting self-regulated learning within regular classroom settings.  相似文献