A Multi-Method Multi-Analytic Approach to Establishing Internal Construct Validity Evidence: The Sport Multidimensional Perfectionism Scale 2     

John K. Gotwals  John G. H. Dunn 《Measurement in physical education and exercise science》2013,17(2):71-92

The purpose of the study was to examine the norm-referenced and criterion-referenced reliability and validity of the Back-Saver Sit-and-Reach Test (BSR; Single-Leg Sit-and-Reach; Cooper Institute for Aerobics Research [CIAR], 1999). One hundred seventy-nine elementary school children (87 boys and 92 girls), 6-12 years old participated, with 44 randomly selected participants retested on a second day. The BSR, Modified Schober (MSCH, Low Back Criterion Test), Passive Straight Leg Raise (PSLR, Hamstring Criterion Test), Active Knee Extension, True Lumbar Extension, True Lumbar Flexion, and Double-Leg Sit-And-Reach were administered in random order. Intraclass correlation coefficients (norm-referenced reliability) for the BSR were extremely high (.98-.99) for both boys and girls. Pa and Km (criterion-referenced test-retest reliability) for the right leg was .90 and .80, respectively, for boys; and .91 and .82 for girls, indicating the participants were classified consistently across days. Norm-referenced validity coefficients (Pearson product-moment correlations, r) of the BSR as a measure of hamstring flexibility were moderate for boys (.67 and .68, right and left legs, respectively) and moderately low for girls (.47 and .44, right and left legs). Correlation coefficients of the BSR as a measure of low back flexibility were extremely poor for boys and girls, with coefficients ranging from .003 to .06. Criterion-referenced validity of BSR for hamstring flexibility was low and unacceptable for right and left legs (Km: .48, .58, respectively), for both boys and girls (Km: .40, .22). The BSR appears to be similar to the Double-Leg Sit-and-Reach in that it is a test of hamstring flexibility but not low back. The criterion-referenced standards for both BSR and PSLR should be re-examined and adjusted to provide a better degree of classification agreement between the BSR and the criterion measure (PSLR).  相似文献   

Gymnastics     

Yoshiaki Takei  J. Hubert Dunn  Erik Blucker 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):141-162

The 16 highest‐scored Roche vaults (G1) performed during the 2000 Olympic Games were compared with those receiving the 16 lowest‐scores (G2). A 16‐mm motion picture camera operating at 100 Hz recorded the vaults during the competition. The results of t tests (p < .05) indicated G1, compared to G2, had (a) shorter time of board support, greater normalised average upward vertical force and backward horizontal force exerted by the board, greater change in the vertical velocity while on the board, and greater vertical velocity at board take‐off, (b) comparable linear and angular motions in pre‐flight, (c) smaller backward horizontal impulse exerted by the horse, smaller loss of the horizontal velocity while on the horse, and greater horizontal and vertical velocities at horse take‐off, (d) greater height and larger horizontal distance of post‐flight, (e) higher body mass centre at knee release, and (f) higher mass centre, greater normalised moment of inertia, and smaller vertical velocity at mat touchdown. Therefore, gymnasts and coaches should focus on sprinting the approach; blocking and pushing‐off the take‐off board rapidly and vigorously; departing the board with a large vertical velocity; exerting large downward vertical force and small forward horizontal force from the handstand position while on the horse; departing the horse with large horizontal and vertical velocities; and completing the majority of the double salto forward near the peak of trajectory and releasing the knees above the top of the horse to prepare for a controlled landing.  相似文献   

The Impact of an Inquiry-Based Geoscience Field Course on Pre-service Teachers     

Gwen Nugent  Michael D. Toland  Richard Levy  Gina Kunz  David Harwood  Denise Green  Kathy Kitts 《Journal of Science Teacher Education》2012,23(5):503-529

The purpose of this quasi-experimental study was to determine the effects of a field-based, inquiry-focused course on pre-service teachers?? geoscience content knowledge, attitude toward science, confidence in teaching science, and inquiry understanding and skills. The field-based course was designed to provide students with opportunities to observe, compare, and investigate geological structures in their natural environment and to gain an understanding of inquiry via hands-on learning activities designed to immerse students in authentic scientific investigation. ANCOVA and MANCOVA analyses examining differences in outcome measures between students in the field experience (n?=?25) and education students enrolled in the traditional, classroom-based course (n?=?37) showed that students in the field course generally had significantly higher scores. Results provide evidence of the value of the field and inquiry-based approach in helping pre-service teachers develop the needed skills and knowledge to create effective inquiry-based science lessons.  相似文献   

Complex Dynamic Systems Approaches to Educational Research     

Gwen C. Marchand  Jonathan C. Hilpert 《Journal of Experimental Education》2017,85(2):173-174

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Processes Involving Perceived Instructional Support,Task Value,and Engagement in Graduate Education     

Gwen C. Marchand  Antonio P. Gutierrez 《Journal of Experimental Education》2017,85(1):87-106

The purpose of this study was to investigate the relations among perceived instructional support (provision of relevance and involvement), subjective task value beliefs (utility, attainment, and intrinsic value), and engagement (behavioral and emotional) over the course of a semester for graduate students enrolled in an introductory research methods course in a college of education (N = 217). Structural equation modeling (SEM) results suggested that each source of perceived support exerted unique influence on students' beliefs about utility value, intrinsic value, and attainment value of their research methods coursework. In turn, midsemester value beliefs predicted semester-end student reports of behavioral and cognitive engagement. Direct and indirect effects between perceived provisions of support and engagement were inconsistent. This study supports the notion that different patterns of predictors and outcomes may occur for different aspects of value beliefs and that multiple sources of instructional support are important for supporting student motivation for adult learners.  相似文献   

TELEVISION AND THE EDUCATION OF THE YOUNG     

Gwen Dunn 《Learning, Media and Technology》1980,6(2):47-52

This paper, from the 1979 Conference, ‘Television In Society’ begins by defining the educational process as one of persisting, despite initial failures, to acquire understanding or mastery, and underlining the uniqueness of each individual learner. The author reports on the results of a one‐year study of the viewing habits of pre‐school children. Little ‘rising fives’ are such heavy viewers that they must feel a sense of loss when school attendance deprives them of ‘their’ television, perhaps the most valuable ‘child‐minder’ of all. Television delights these veteran under‐five viewers and provides an aid that parents and teachers can welcome; it also seems to stimulate little or no ‘participation’ and to inhibit language skills. Older children are also voracious viewers, but the author's experience suggests that television does not of itself inhibit reading and that to blame violent behaviour on viewing of violence is humbug. In conclusion it is suggested that educators are as yet failing to recognize the paramount importance of television in children's lives: there is an urgent need for education to acknowledge this in its curricula and for children (and adults) to find out more about how television is created. The Educational Television Association could play an important role here.  相似文献   

Use and delivery of learning objects in k-12: The public television experience     

Gwen C. Nugent 《TechTrends》2004,49(4):61-66

Summary Driven by economic efficiencies and the object-oriented paradigm of computer programming, learning objects are the current buzz-word in mediated instruction. Considerable work with learning objects has been undertaken by the Department of Defense and universities with Department of Defense contracts, but the concept of learning objects extends to the K-12 school environment. Public television, with its long history of providing video resources, has embraced the concept of learning objects and has been actively repurposing its vast video libraries to conform to the learning object model. These efforts do not focus on technical standards, data interchange protocols and scalable architectures, but they do offer concrete evidence of the instructional considerations and uses of learning objects in K-12 classrooms  相似文献   

"I got some swords and you're dead!": violent fantasy, antisocial behavior, friendship, and moral sensibility in young children     

Dunn J  Hughes C 《Child development》2001,72(2):491-505

Relations between an early interest in violent fantasy and children's social understanding, antisocial and emotional behavior, and interactions with friends were investigated in 40 "hard-to-manage" preschoolers and 40 control children matched for gender, age, and school and ethnic background. Children were filmed alone in a room with a friend, and tested on a battery of cognitive tests, including false-belief, executive function, and emotion understanding tasks. Teachers reported on their friendship quality. At age 6 years, the children's understanding of the emotional consequences of antisocial and prosocial actions was studied. The hard-to-manage group showed higher rates of violent fantasy; across both groups combined, violent fantasy was related to poor executive control and language ability, frequent antisocial behavior, displays of anger and refusal to help a friend, poor communication and coordination of play, more conflict with a friend, and less empathic moral sensibility 2 years later. The usefulness of a focus on the content of children's pretend play-in particular, violent fantasy-as a window on children's preoccupations is considered.  相似文献   

Balancing Economic and other Discourses in the Internationalization of Higher Education in South Africa     

Mel Dunn  Pam Nilan 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2007,53(3):265-281

Since the end of the apartheid era in South Africa, “internationalization” of higher education has been a popular theme as the country takes its place as a regional leader in education and research in sub-Saharan Africa. However, competing discourses of internationalization have produced economic and moral dilemmas rather than the realization of philanthropic academic aims. The process of internationalizing higher education in South Africa has been greatly compromised by under-funding and over-crowding of post-secondary education institutions in the country.  相似文献   

Trust in media and government: A recursive model for natives of Hong Kong and Mainland China     

John S. Seiter  Deborah Dunn 《Communication Research Reports》2013,30(2):203-209

This study explored whether a female student's level of attractiveness affects the degree to which she is believed when making a claim of sexual harassment, and whether attractiveness is related to perceptions of how likely it is that she will be sexually harassed. Participants viewed one of three photographs of a female model who was made to appear a) unattractive, b) attractive and pristine, or c) attractive but not pristine. Afterwards they read a case file in which the photographed model claimed to have been sexually harassed by one of her professors. Finally, participants rated the photographed model's veracity and their perceptions regarding how likely it was that the model would be sexually harassed. Results indicated that when she was perceived as unattractive, the model was rated as more deceptive and less likely to be harassed than when she was perceived as attractive, regardless of whether she was perceived to be pristine or not. These results and their implications are discussed.  相似文献