To excel, players also need to feel confident about their own roles as well as their contributions to the team, notes Craig wrisberg, a professor emeritus of sport psychology and past president of the Association for Applied Sport Psychology ( AASP). 运动心理学退休教授和应用运动心理学协会(aasp)前主席克雷格.里斯伯格提出,运动员要想发挥出色的比赛水平,对于自身所起的作用以及能为团队作出贡献还需要有十足的信心。