If there is one theoretical framework that can easily be applied to helping coaches be more effective, it is the motivational framework of the Self-Determination Theory (SDT). SDT posits that human beings have 3 essential needs: the need for relatedness, the need to feel competence, and the need for autonomy.
I like to call these needs “The 3C’s“–care, competence, & choice–as talking “theory” is usually not met with interest and enthusiasm! When the three needs are not being met, well-being, optimal health, functioning, performance, and development are less likely to occur. Coaches play a unique role in meeting the needs of their athletes. If you’re interested in increasing your effectiveness as coach, parent, manager or any task that involves social interactions with other human beings, I’d encourage you to learn more about SDT.