The BABOK Guide includes "Analytical Thinking and Problem Solving" as one of the core underlying competencies, and under this category fall the capabilities of learning, systems thinking, and decision making. These skills enable BAs to analyze complex information, make sound judgments, and approach issues holistically.
BABOK Reference - Underlying Competencies (Chapter 9):
"Analytical Thinking and Problem Solving includes creativity, decision making, learning, problem solving, systems thinking."