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L G Gao

Publications and source records attributed to L G Gao.

4 recordsLinked to original sources

A comparison of two criterion-referenced standard setting procedures for sports skills testing.

The application of criterion-referenced (CR) standard setting procedures in physical education has been limited to the examinee-centered model known as criterion groups. Alternative examinee-centered approaches are available but have not been applied in sport skills testing. The purpose of this study was to compare two examinee-centered models for setting performance standards for a sport skills test battery. CR performance standards were determined for the tennis skills test battery published in Tennis skills test manual (Hensley, 1989) using the borderline group (BG) (Livingston & Zieky, 1982) and criterion groups (CG) (Berk, 1976) models. The comparison of these two methods demonstrated that the CG method consistently produced performance standards that were lower than the BG method. In one instance the BG method produced a standard that was clearly unreasonable. Estimates of CR reliability for the CG standards (.76 less than or equal to P less than or equal to .93; .52 less than or equal to Kq less than or equal to .86) were higher than BG estimates (.55 less than or equal to P less than or equal to .84; .11 less than or equal to Kq less than or equal to .68). Although each method has strengths, neither is without problems. Results from this study suggest these two methods might be combined to minimize the problems associated with each. This combined method should produce standards with improved accuracy, validity, and reliability.

Adult

EEG characteristics of healthy adults living at higher elevations.

EEG data from 400 healthy adult volunteers in the Xining area (with an altitude of 2260 meters) are summarized to show changes in indices of waves, frequencies and amplitude. Analysis and observations were made for tests of eyes open-close, acoustic stimulation and hyperventilation. Differences in EEGs were compared between males and females of various age groups, and between adults living at the higher elevations in Xining and those living on the plains in the Beijing area (altitude 40 meters). Comparisons showed that EEG characteristics of healthy adults at the higher altitude were: an increase in the incidence of abnormality, a decrease of alpha indices, an increase in the number of slow waves, the appearance of spikes and sharp waves, and a reduction in the level of sensitivity to activation tests.

Adult

EEG characteristics of healthy adults in plateaus.

This paper covers the EEG data of 400 adult cases in Xining area (where the altitude is 2,260 meters), with a lot of statistics of the changes in the indexes of waves, frequencies and amplitude. And, analysis and observation were made in the tests of open-close eyes, acoustic stimulation and hyperventilation. Besides, we compared the differences of EEG between males and females of different age, and between adults living on the plateau and those living in the plain of Beijing area. We found that the EEG of healthy adults on the plateau showed the following characteristics: increase of abnormal rate, decrease of alpha indexes, increase of the number of slow waves, appearance of spike and sharp waves, and reduction of the level of sensitivity in evoked tests.

Adult