1. Chang, Y.K., Ho, L.A., Fu, F.J. H., Ou, C.C., Song, T.F., and Gill, D. L. (2014). Self-talk and softball performance: The role of self-talk nature, motor task characteristics, and self-efficacy in novice softball players. Psychology of Sport and Exercise, 15, 139–145. https://www.sciencedirect.com/science/article/abs/pii/S1469029213001064?via%3Dihub