Sport psychology research: Proper standards and limitations.Martin, J. J., Beasley, V. L., & Guerrero, M. D. (2019). Sport psychology research: Proper standards and limitations. In APA handbook of sport and exercise psychology, volume 1: Sport psychology., Vol. 1. (pp. 17–40). American Psychological Association. https://doi-org.proxy1.ncu.edu/10.1037/0000123-002
Read article – helps understand the research process.