Psychometric properties of child- and teacher-reported curl-up scores in children ages 10-12 years     

Patterson P  Bennington J  De La Rosa T 《Research quarterly for exercise and sport》2001,72(2):117-124

The purpose of this study was to examine the psychometric properties of child- and teacher-reported curl-up (CU) scores in children ages 10-12 years in both a norm-referenced (NR) and criterion-referenced (CR) framework. Eighty-four children, 36 boys and 48 girls, performed the FITNESSGRAM (Cooper Institute for Aerobics Research, 1992) CU test on 2 days separated by 48-72 hr. Two video cameras were used to record students' CU performances. Two students performed the CU at the same time, with each child's performance recorded by one camera. The test was terminated when the child stopped due to fatigue or after two form errors occurred. Teacher-reported scores were the average of two independent ratings of each video performance, while child-reported scores came from data collected and recorded by the children. Single trial norm-referenced reliability was R = .75 for girls and R = .80 for boys for teacher-reported CU and R = .69 and R = .70 for child-reported CU for girls and boys, respectively. CR reliability was examined using P, proportion of students who consistently passed or failed the test across 2 days, and km, defined as reliability with chance removed. For teacher-reported scores, P = .89 and km = .78 for boys and P = .81 and km = .62 for girls. For child-reported scores, P = .86 and km = .72 for boys, while P = .79 and km = .58 for girls. For teacher-reported data, 39% of boys passed and 50% failed the test on both days, while for girls the percentages were 27% pass and 54% fail. For child-reported data, 64% of boys passed and 22% failed on both days, while 54% of girls passed and 25% failed. NR validity was examined by correlating teacher and child-reported scores. The resultant coefficient was r = .42 (95% CI = .11-.66) for boys and r = .67 (95% CI = .58-.74) for girls. Additionally, child-reported scores were significantly higher than teacher-reported scores. CR validity was examined with a contingency coefficient, and results indicated C = .55 with 44% false master errors for boys and C = .65 with 29% false master errors for girls. The findings of this study suggest that while NR reliability estimates were moderate for teacher-reported scores, single trial estimates suggest that child-reported CU should be viewed with caution. In regard to CR reliability, both teacher-reported and child-reported reliability were moderate. However, there were marked differences between teacher- and child-reported scores, with children reporting higher percentages of students passing and lower percentage of student failing the test when compared with scores reported by teachers. Validity was rather moderate when viewed in either a NR and CR framework. It is suggested that problems with child-reported scores may be due to the need for additional practice or simplification of the testing protocol.  相似文献   

An Off-campus Counseling Practicum     

C. H. Patterson 《Counselor Education & Supervision》1966,5(3):166-168

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Familial aggregation of aerobic power: the influence of age, physical activity, and body mass index     

J F Sallis  T L Patterson  J A Morris  P R Nader  M J Buono 《Research quarterly for exercise and sport》1989,60(4):318-324

Whereas modest familial aggregation of VO2max has been documented after controlling for variables such as physical activity habits, the effect of adjustment for moderating variables has not been directly tested. This issue was addressed in 95 Anglo and 111 Mexican-American families who underwent submaximal cycle ergometer testing. Zero-order correlations of predicted VO2max between pairs of family members were generally weak for both Anglo families (r = 0.04 to 0.35) and Mexican-American families (r = 0.03 to 0.50). Five of 12 correlations were significant. Similar results were found for combined ethnic groups. Adjustment for age, physical activity, and body mass index by partial correlation had few significant effects on aggregation of predicted VO2max. Adjustment for body mass index produced significant decreases in the correlation for Anglo spouses and mother-older child and sibling pairs in the combined group. Although influential moderating variables were not identified, body mass index was found to be a significant, though inconsistent, mediator of aggregation of VO2max. Genetic factors were not strongly supported because of generally weak aggregation in the two ethnic groups.  相似文献   

An analysis of “signaled double-alternation patterning” in the rat     

W. B. Pavlik  Alexis C. Collier 《Learning & behavior》1975,3(1):73-75

Rats given training with double alternation of rewards and nonrewards in which the first reward or nonreward of each pair occurred in a black runway and the second in a white runway developed fast running on rewarded trials in both runways and slow running on nonrewarded trials in both runways—signaled double alternation patterning. A subsequent shift in the reinforcement schedule produced a period of reversed patterning—slow on rewarded trials and fast on nonrewarded trials. The results are consistent with a compound stimulus discrimination interpretation of signaled double-alternation patterning rather than with a selective memory-retrieval explanation.  相似文献   

A scaleable document clustering approach for large document corpora     

Niall Rooney  David Patterson  Mykola Galushka  Vladimir Dobrynin 《Information processing & management》2006

In this paper, the scalability and quality of the contextual document clustering (CDC) approach is demonstrated for large data-sets using the whole Reuters Corpus Volume 1 (RCV1) collection. CDC is a form of distributional clustering, which automatically discovers contexts of narrow scope within a document corpus. These contexts act as attractors for clustering documents that are semantically related to each other. Once clustered, the documents are organized into a minimum spanning tree so that the topical similarity of adjacent documents within this structure can be assessed. The pre-defined categories from three different document category sets are used to assess the quality of CDC in terms of its ability to group and structure semantically related documents given the contexts. Quality is evaluated based on two factors, the category overlap between adjacent documents within a cluster, and how well a representative document categorizes all the other documents within a cluster. As the RCV1 collection was collated in a time ordered fashion, it was possible to assess the stability of clusters formed from documents within one time interval when presented with new unseen documents at subsequent time intervals. We demonstrate that CDC is a powerful and scaleable technique with the ability to create stable clusters of high quality. Additionally, to our knowledge this is the first time that a collection as large as RCV1 has been analyzed in its entirety using a static clustering approach.  相似文献   

Anti-racism activism among Black adolescents and emerging adults: Understanding the roles of racism and anticipatory racism-related stress     

Elan C. Hope  Vanessa V. Volpe  Alexis S. Briggs  G. Perusi Benson 《Child development》2022,93(3):717-731

This study examines associations between individual racism, anticipatory racism-related stress, and anti-racism activism among Black adolescents (n = 443; M_age = 15.6; 57.4% female) and emerging adults (n = 447; M_age = 23.8; 77.6% female). The authors tested competing hypotheses about associations between individual racism and anti-racism activism on anticipatory racism-related stress. Findings indicated anticipatory racism-related stress may be both a catalyst and consequence of engagement in anti-racism activism for Black adolescents and emerging adults. Results for each age group varied by type of stress (physiological; psychological) and activism (low-risk; high-risk). Supporting youth engagement in anti-racism activism without increasing anticipatory racism-related stress is a key priority for meaningfully advancing scholarship on the development of anti-racism and pursuit of racial justice.  相似文献   

Getting results: Case studies in performance improvement     

Timm J. Esque  Patricia A. Patterson  David Chapman 《Performance Improvement》2000,39(2):41-42

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Rules for regulating instructional development–how to go slow quickly or how to go quick slowly     

Lester J. Elsie  Amos C. Patterson 《Performance Improvement》1979,18(8):26-29

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