leadership skill; leadership ability
彼の指導力が部下を大きく成長させた。
His leadership helped his team members grow significantly.
指導力の欠如がチームを崩壊させた。
A lack of leadership caused the team to fall apart.
優れた指導力を持つ監督のもとで選手たちは伸びた。
Under a coach with strong leadership, the players flourished.