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171.
Donald E. Campbell 《Research quarterly for exercise and sport》2013,84(3):456-462
Abstract A group of 199 college males completed the Wear physical education attitude inventory. The responding subjects were subsequently classified according to the size of the high school attended, the college of matriculation, and the physical education class in which they were currently enrolled. No significant variations in attitude scores toward physical education were found within the subgroups of each of the three classifications. However, a significant difference in attitude scores was found between the responses to the four categories of items of the inventory. A significant variation in response was obtained between the subset formed by the physiological and the social items and the subset created by the mental-emotional and general items of the Wear attitude inventory. 相似文献
172.
Donald E. Campbell 《Research quarterly for exercise and sport》2013,84(4):888-893
Abstract Form A of the Wear Attitude Inventory was administered to one randomly selected physical education class of seventh grade boys, one class of eighth grade boys, and one class of ninth grade boys in each of five junior high schools. The mean Inventory score for each grade was found to be equal to or superior to the mean reported in Wear's validation study. A significant X2 value was found for the distribution of Inventory scores of the three junior high school grades. A biserial coefficient of correlation item analysis which was computed for each of the three grades established that the 30 items correlated significantly with the total score and that the item score also had a significant correlation with the Inventory category score. On the basis of these results, the conclusion was advanced that the Wear Attitude Inventory was an appropriate instrument to measure attitudes of junior high school boys toward physical education. 相似文献
173.
174.
Donald Spivey 《国际体育史杂志》2013,30(2):238-249
Satchel Paige's gala baseball performances in Canada had meaning at multiple levels when assessed within the context of US–Canadian relations, individual and national identity, race, the struggle for equality and the place of culture – sport and baseball in particular – in international relations and diplomacy. Paige was one of baseball's foremost globetrotters, and the premier African-American baseball ambassador without portfolio. His pitching talents and economic importance ignited passions across the borders, commencing in the 1920s and continuing over four decades. He rarely travelled less than 40,000 miles a year throughout the USA and to foreign shores wherever duty called, and there was the promise of a good payday. The great fireballer for hire and other star black ballplayers relished playing south of the border because of the freedom from Jim Crow. It is often overlooked that they loved playing north of the border as well, in Canada in particular. That play, as argued here, had symbolic and substantive international significance. 相似文献
175.
176.
Kelly L. Lockwood Pierre J. Gervais Donald R. Mccreary 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):231-241
Technical evaluation in the sport of figure skating is characterized by a subjective marking system. Figure skating judges are responsible for quickly and accurately discerning the quality of technical elements as well as assigning a score to the overall aesthetic appearance of a performance. Traditionally, overall placement marks are assigned for the entire performance; however, the landing of a jump is widely acknowledged as one of the most critical elements of a skater's program. Therefore, our aims were to identify the biomechanical variables that contribute to technical success in executing landings and to establish whether landings rated as biomechanically optimal are also awarded high technical merit scores by judges. Ten nationally ranked competitive figure skaters were asked to execute on‐ice, double and triple revolution jumps and to try to land the jumps void of technical faults within a calibrated space. Data were collected at 60 Hz using standard three‐dimensional videography. Data reduction was done using the APAS system (Ariel Dynamics Inc). Concurrently, videotapes were viewed and evaluated by 42 accredited judges to determine the perceived technical quality of the landing performances. Judges were asked to evaluate the landing phase of each jump against a landing criteria document. A comparative criteria model was developed to facilitate an assessment of excellence in landing performances through both empirical and subjective analyses. Results of these analyses were twofold: a biomechanical profile of on‐ice landings was obtained, and on‐ice jump landing strategies rated by empirical evaluations were in agreement with judge's perceptions of the same performances. 相似文献
177.
Three experiments were performed to address factors contributing to the Ponzo illusion. In Experiment 1, pigeons learned to peck at the longer of two bars in varying line contexts. When these lines converged, the birds had difficulty in learning several patterns in which a Ponzo illusion would reduce the perceived difference. In Experiment 2, the subjects chose one response if a stimulus bar was longer than a predetermined length and a second response for shorter bars. The subjects were more likely to choose “long” as the stimulus bar approached the apex of converging lines. These results suggested that pigeons experience the Ponzo illusion. In Experiment 3, the effects of contexts that did and did not form a texture gradient were compared. The magnitude of the illusion did not differ according to context lines. This result failed to support a perspective theory of the Ponzo illusion. 相似文献
178.
Amy M. Elleman Laura M. Steacy Natalie G. Olinghouse Donald L. Compton 《Scientific Studies of Reading》2017,21(2):133-145
Although instruction has been shown to be effective at increasing vocabulary knowledge and comprehension, factors most important for promoting the acquisition of novel vocabulary are less known. In addition, few vocabulary studies have utilized models that simultaneously take into account child-level, word-level, and instructional factors to better understand the acquisition of novel vocabulary from informational text. Sixty-eight children with reading difficulties in Grades 3–5 were randomly assigned to either vocabulary strategy instruction or traditional comprehension instruction with both groups reading the same set of expository texts. Crossed random-effects models were used to predict item-level variance in vocabulary acquisition. Results indicated main effects for condition favoring vocabulary instruction, child-level predictors (vocabulary and knowledge of the content), and word-level factors (frequency and imageability). One interaction was significant, indicating that students with higher vocabulary scores were more likely to do better when provided vocabulary instruction than students with lower prior vocabulary. 相似文献
179.
180.
Donald C. Savage 《Interchange》1994,25(4):381-384
The author disagrees with Cameron's suggestion that democratization and decentralization were a mistake. As chief lobbyist of the Canadian Association of University Teachers, he argues for collective bargaining. He counters Cameron's support of the continuation of mandatory retirement with reference to the U.S. experience and points to the Supreme Court's defence of tenure. 相似文献