The precision of data obtained in large-scale science assessments: An investigation of bootstrapping and half-sample replication methods     

Wayne W. Welch  Douglas Huffman  Frances Lawrenz 《科学教学研究杂志》1998,35(6):697-704

Powerful computational procedures are now available to better determine the accuracy of statistical estimates derived from data that have unknown distributions or do not meet parametric requirements. These techniques are generally called resampling plans and include the recently developed bootstrap. Science educators often face the problem of nonnormal distributions especially when conducting large-scale assessments or evaluating national curriculum projects that require complex sampling plans. Resampling techniques permit the researcher to make inferences without the strong distributional assumptions needed for more traditional parametric approaches. In this study, the bootstrap and a simplified version of a half-sample replication are used to examine the precision of science test scores obtained in a large-scale evaluation of Scope, Sequence, and Coordination, a national science curriculum project. The resampling plans are described in some detail and the results are compared with those obtained from parametric methods. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 697–704, 1998.  相似文献   

WISC-R factor scores and student self-ratings of behavior as predictors of academic achievement     

Martin J. Wiese  Cheryl Lamb  Wayne C. Piersel 《Psychology in the schools》1988,25(1):35-41

The capability of WISC-R Verbal Comprehension (VC), Perceptual Organization (PO), and Freedom from Distractibility (FD) factor scores and student self-ratings of behavior from the Behavior Rating Profile Student Rating Scales (BRP-SRS) to predict academic achievement was investigated. Previous research found that intellectual ability accounted for about 50% of the variance in achievement. Other noncognitive variables are expected to account for a portion of the remaining variance and add significantly to the prediction of achievement. Subjects were public school students referred for psychological evaluations due to learning and behavior problems in the classroom. The results of a multivariate multiple regression analysis indicated that VC and FD factors significantly predicted Woodcock-Johnson Reading, Mathematics, and Written Language cluster scores. The VC and FD factors accounted for a major portion of the variance in achievement. Behavioral self-ratings did not contribute significantly to the prediction of achievement scores.  相似文献   

Transition to Outcome-based Learning, Teamwork Skills Development, Qualitative Research Methods, and a Useful Writing Website for Students and Faculty     

Wayne Iwaoka 《Journal of Food Science Education》2003,2(2):17-17

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Balancing Virtues and Values     

Wayne Vaught 《Metascience》2008,17(2):287-292

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Effects of a 12-week physical activity protocol delivered by YMCA after-school counselors (Youth Fit for Life) on fitness and self-efficacy changes in 5-12-year-old boys and girls   总被引：1，自引：0，他引：1  

Annesi JJ  Westcott WL  Faigenbaum AD  Unruh JL 《Research quarterly for exercise and sport》2005,76(4):468-476

To address reduced physical education (PE) in elementary schools, a 12-week physical activity protocol was tested on 5-12-year-old, primarily African American, girls (n = 226) and boys (n = 344) at 14 YMCA after-school care sites. The 3 times/week, 45-min session curriculum included cardiovascular, resistance, and flexibility training, in which all children could participate simultaneously, and a behavioral skills education component. After-school counselors, formerly untrained in PE methods, administered the sessions, with periodic supervision by YMCA wellness staff members. Analyses of the eight Age x Sex subsamples indicated significant improvements on body composition, strength, and endurance, both within-groups and when predicted changes due to maturation were accounted for. Exercise barriers self-efficacy significantly increased in subsamples of 9-10- and 11-12-year-old girls only. The need for replication across ethnic groups was suggested. Limitations and the need for extension of research on supplementation of elementary school PE were discussed.  相似文献   

A New Forum for Food Science Educators     

Wayne Iwaoka 《Journal of Food Science Education》2002,1(1):2-2

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Editorial: The idea of sietar     

Paul Pedersen 《Int J Intercult Relat》1979,3(2):133-135

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Minor physical anomalies and behavior in preschool children   总被引：10，自引：0，他引：10  

M F Waldrop  F A Pedersen  R Q Bell 《Child development》1968,39(2):391-400

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Some characteristics of high school physics students: Circa 1968     

Wayne W. Welch 《科学教学研究杂志》1969,6(3):242-247

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The psychodynamics of race: vicious and benign spirals: Rae Sherwood New Jersey: Huma1nities Press, 1980, 590 pp     

Paul Pedersen 《Int J Intercult Relat》1982,6(2):211-214

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