This study aims to select adequate questionnaire items to evaluate the leadership abilities of a soccer coach, who can lead his team to victory. On the basis of the “coach’s qualifications and task” offered by the Japan Football Association in addition to previous studies, it is assumed that the coaches’ leadership abilities are composed of the following six factors: “human nature,” “general nature,” “analysis and evaluation of a game,” “team management,” “coaching policy,” and “coaching skill.” After examining the content validity, 227 questionnaire items were selected. The survey was conducted with 183 soccer players who had over three years of soccer experience (valid responses: 162). They answered either “right,” “not right,” or “I do not know” for each item. After the items were analyzed on the basis of the three predetermined criteria’s, 113 items were judged to be adequate. The reliability of the questionnaire was high (α = 0.95). It was considered that items cover the above “coach’s qualifications and task.” Furthermore, to enhance the utility of the questionnaire, it will be necessary to carefully choose questionnaire items in the future.
