hree experiments designed to validate the content and construct properties of the Sports Imagery Questionnaire (C. R. Hall, W. M. Rodgers and K. A. Barr, 1990) are presented. Initially items are developed through a literature review, an evaluation of other imagery questionnaires, and the expert evaluations of research professionals and elite athletes. Differences were sought both in terms of the types of images practiced, and between individual and team sports. Greater imagery use was associated with successful performance and differences were identifies between the images individual and team sport athletes used. The SIQ is found to be a useful tool for helping understand how athletes use different types of imagery.