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Hedges, Larry V.; Rhoads, Christopher – National Center for Special Education Research, 2010
This paper provides a guide to calculating statistical power for the complex multilevel designs that are used in most field studies in education research. For multilevel evaluation studies in the field of education, it is important to account for the impact of clustering on the standard errors of estimates of treatment effects. Using ideas from…
Descriptors: Research Design, Field Studies, Computers, Effect Size
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Yuan, Xiaojun; Zhang, Xiangman; Chen, Chaomei; Avery, Joshua M. – Information Research: An International Electronic Journal, 2011
Introduction: This study investigated the effect of cognitive styles on users' information-seeking task performance using a knowledge domain information visualization system called CiteSpace. Method: Sixteen graduate students participated in a user experiment. Each completed an extended cognitive style analysis wholistic-analytic test (the…
Descriptors: Graduate Students, Cognitive Style, Cognitive Tests, Visualization
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Papanastasiou, Elena C. – Research in Science & Technological Education, 2003
The purpose of this study was to examine how variables related to computer availability, computer comfort and educational software are associated with higher or lower levels of science literacy in the USA, Finland and Mexico, after controlling for the socio-economic status of the students. The analyses for this study were based on a series of…
Descriptors: Foreign Countries, Computers, Educational Technology, Computer Uses in Education
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Telama, Risto; Nupponen, Heimo; Pieron, Maurice – European Physical Education Review, 2005
The promotion of a healthy lifestyle is the main goal of physical education in many countries. However, very little is known about the relationship between different lifestyles and physical activity patterns among young people. The aim of this study was to investigate the relationship between lifestyle and physical activity among 12- and…
Descriptors: Physical Education, Physical Activities, Leisure Time, Physical Activity Level