The document discusses three skills that are important for an effective executive:
1. Conceptual skills - The ability to understand complex situations and see the big picture. This includes skills like strategic thinking, problem solving, and decision making.
2. Human skills - Skills for motivating, communicating with, and developing people. This involves skills like leadership, team building, and coaching.
3. Technical skills - Expertise in a specific business function like finance, marketing, or operations. While not as important as conceptual and human skills, technical skills are still needed for credibility.