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This article presents our progress in developing a set of survey measures to assess constructs of the Sport Commitment Model in the youth-sport domain. Initial item development was accomplished through extensive literature reviews and the expert evaluations of research professionals, teachers, and young athletes. The items were then examined empirically with three separate samples numbering 140, 178, and 1342 athletes, respectively. For the first two samples, items formed reliable scales for each of the model constructs and separated into distinct factors largely as hypothesized. For the third sample, structural-equation modeling was employed and results supported the measurement of four constructs, with the other two constructs held from the measurement model because of item limitations. Overall, results of the three samples indicate reliable measures that can be used in tests of the Sport Commitment Model across samples of youth-sport athletes representing diversity in age, gender, and ethnicity.
T. Scanlan and P. Carpenter are with the Department of Psychology at UCLA, 1285 Franz Hall, Los Angeles, CA 90024-1563. J. Simons is with the Department of Kinesiology at the University of Colorado at Boulder, Campus Box 3544, Boulder, CO 80309-0354. G. Schmidt is with the Department of Psychology at MTSU, Box 505, Murfreesboro, TN 37132. B. Keeler resides in Bishop, CA.