Perceptual-cognitive expertise of handball coaches in their young and middle adult years     

Lennart Fischer  Joseph Baker  Rebecca Rienhoff  Bernd Strauß  Judith Tirp  Dirk Büsch 《Journal of sports sciences》2016,34(17):1637-1642

There is little research investigating the maintenance of perceptual-cognitive expertise in general and even less comparing coaches of different ages. The aim of this study was to test for perceptual-cognitive differences between age groups, licence levels, and their interaction. This study investigated differences in skilled performance between young and middle-aged coaches of three different skill levels. Participants performed an accuracy-oriented pattern recall (mean distance in pixel) and a time-oriented flicker test (mean detection time in ms). There were some significant differences between age groups and between skill groups for both tests, but no interactions. For the pattern recall test, the effect sizes were larger for skill level differences, while for the flicker test effects were larger for ageing. These results suggest coaches are able to maintain accuracy skills better than reaction timed tasks. This is in line with findings on speeded performance in general populations, which show declines with age. Moreover, results also support findings on perceptual expertise in skills where accuracy was important.  相似文献   

Accelerometer data requirements for reliable estimation of habitual physical activity and sedentary time of children during the early years - a worked example following a stepped approach     

Daniel D. Bingham  Silvia Costa  Stacy A. Clemes  Ash C. Routen  Helen J. Moore  Sally E. Barber 《Journal of sports sciences》2016,34(20):2005-2010

This study presents a worked example of a stepped process to reliably estimate the habitual physical activity and sedentary time of a sample of young children. A total of 299 children (2.9 ± 0.6 years) were recruited. Outcome variables were daily minutes of total physical activity, sedentary time, moderate to vigorous physical activity and proportional values of each variable. In total, 282 (94%) provided 3 h of accelerometer data on ≥1 day and were included in a 6-step process: Step-1: determine minimum wear-time; Step-2: process 7-day-data; Step-3: determine the inclusion of a weekend day; Step-4: examine day-to-day variability; Step-5: calculate single day intraclass correlation (ICC) (2,1); Step-6: calculate number of days required to reach reliability. Following the process the results were, Step-1: 6 h was estimated as minimum wear-time of a standard day. Step-2: 98 (32%) children had ≥6 h wear on 7 days. Step-3: no differences were found between weekdays and weekend days (P ≥ 0.05). Step-4: no differences were found between day-to-day variability (P ≥ 0.05). Step-5: single day ICC’s (2,1) ranged from 0.48 (total physical activity and sedentary time) to 0.53 (proportion of moderate to vigorous physical activity). Step-6: to reach reliability (ICC = 0.7), 3 days were required for all outcomes. In conclusion following a 7 day wear protocol, ≥6 h on any 3 days was found to have acceptable reliability. The stepped-process offers researchers a method to derive sample-specific wear-time criterion.  相似文献   

Escalating Terror: Communicative Strategies in a Preschool Classroom Dispute     

Susan Danby  Carolyn D. Baker 《Early education and development》2001,12(3):343-358

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Genetic and environmental influences on rapid naming and reading ability: A twin study     

Chayna J. Davis  Valerie S. Knopik  Richard K. Olson  Sally J. Wadsworth  John C. DeFries 《Annals of dyslexia》2001,51(1):231-247

The present study assesses the genetic and environmental etiologies of reading, rapid naming (RN), and their covariation by fitting multivariate structural equation models to data from 587 twin pairs in which at least one member of the pair exhibited reading difficulties (low-range) and from 360 control (normal-range) twin pairs who were tested in the Colorado Learning Disabilities Research Center. Results from a bivariate phenotypic analysis with two hypothesized latent factors, READ and RN, indicated that the correlation between reading and rapid naming performance for the low-range sample was significantly higher than that of the normal-range sample. When this model was partitioned to include estimates of genetic, shared environmental, and nonshared environmental influences, resulting heritability estimates did not differ significantly for the low-range and normal-range samples for either READ or RN. However, similar to the phenotypic correlation, the genetic correlation between the READ and RN latent factors could not be equated for the two groups. Thus, the etiology of the relationship between reading performance and rapid naming may differ for children with reading difficulties and normally-achieving readers. Moreover, these results support previous findings that the best predictors of reading skills may differ for samples of children with normal reading levels and those with reading difficulties.  相似文献   

Erratum to: Effect of Current Electricity Simulation Supported Learning on the Conceptual Understanding of Elementary and Secondary Teachers     

David Devraj Kumar  P. V. Thomas  John D. Morris  Karen M. Tobias  Mary Baker  Trudy Jermanovich 《Journal of Science Education and Technology》2011,20(2):116-115

This study examined the impact of computer simulation and supported science learning on a teacher’s understanding and conceptual knowledge of current electricity. Pre/Post tests were used to measure the teachers’ concept attainment. Overall, there was a significant and large knowledge difference effect from Pre to Post test. Two interesting interactions were observed during the data analysis. The first was the difference between Elementary and Secondary teachers. Both groups had significant gains, with large effect sizes, but the Elementary teachers (Pre-Mean = 3.70, Post-Mean = 7.51) started lower and ended higher exhibiting a significantly larger gain than the Secondary teachers (Pre-Mean = 4.96, Post-Mean = 6.71). The second interaction was the impact of gender. Both groups showed significant gains, with large effect sizes, but females (Pre-Mean = 3.90, Post-Mean = 7.21) gained significantly more than males (Pre-Mean = 5.13, Post-Mean = 7.01). These results confirm that computer simulation supported science learning can have a positive effect on concept attainment in teachers.  相似文献   

Youth and culture: A seventeen nation study of perceived problems and coping strategies     

Janice T. Gibson  Marvin J. Westwood  F. Ishu Ishiyama  William A. Borgen  Susan M. Showalter  Qasem Al-Sarraf  Semiha A. Atakan  Isaura R. F. Guimares  A. Lina Guisti-Ortiz  Margaret Robertson  Benjamin Shafrir  Peter De Weerdt  Gundelina A. Velazco  Carol E. Baker  Maria Dikaiou  Tatiana Gabay  Lina Kashyup  Ilona Lee  Maria E. Felce Di Paula  Hillman Ngunangwa  Nina F. Talyzina 《International journal for the advancement of counseling》1991,14(3):203-216

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Namewriting: A step toward writing and reading     

Sally Hruska 《Early Childhood Education Journal》1984,12(2):36-38

Teacher, I can read all the names on the locker, said Nikki, and to her teacher's amazement, she did. The teacher had expected this class of three year olds to learn to recognize their own names, but she hadn't forseen that some would learn all the other children's names as well.Sally Hruska, a former early education teacher, is a doctoral student at Michigan State University in Lansing. The teachers from Marquette-Alger Head Start provided many of the teaching ideas in this article.  相似文献   

A partitioning technique for defining instructional groups     

Frank B. Baker  Lawrence J. Hubert 《Instructional Science》1979,8(2):121-132

A technique is presented for partitioning N students into K groups of fixed sizes using a given measure of proximity for all student pairs. The measure of proximity is typically calculated from a set of variables, such as completed curriculum units or learning style, and constitutes the data needed for a criterion of partition fit. This latter index is explicitly defined by the sum of within-group proximities and when used in conjunction with the optimization procedure discussed, homogeneous groups can be obtained that satisfy externally imposed size requirements. Finally, a simple generalization is suggested for the related task of grouping students to meet upper limit size constraints only.  相似文献   

Developing local oral reading fluency cut scores for predicting high‐stakes test performance          下载免费PDF全文

Sally L. Grapin  John H. Kranzler  Nancy Waldron  Diana Joyce‐Beaulieu  James Algina 《Psychology in the schools》2017,54(9):932-946

This study evaluated the classification accuracy of a second grade oral reading fluency curriculum‐based measure (R‐CBM) in predicting third grade state test performance. It also compared the long‐term classification accuracy of local and publisher‐recommended R‐CBM cut scores. Participants were 266 students who were divided into a calibration sample (n = 170) and two cross‐validation samples (n = 46; n = 50), respectively. Using calibration sample data, local fall, winter, and spring R‐CBM cut scores for predicting students’ state test performance were developed using three methods: discriminant analysis (DA), logistic regression (LR), and receiver operating characteristic curve analysis (ROC). The classification accuracy of local and publisher‐recommended cut scores was evaluated across subsamples. Only DA and ROC produced cut scores that maintained adequate sensitivity (≥.70) across cohorts; however, LR and publisher‐recommended scores had higher levels of specificity and overall correct classification. Implications for developing local cut scores are discussed.  相似文献   

Editors’ Report          下载免费PDF全文

Mark Connolly  Carina Girvan  Sally Power  Chris Taylor 《British Educational Research Journal》2016,42(1):1-4

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